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HomeMy WebLinkAbout1.17 DrainageStudy3-20 Lake Springs Ranch Subdivision Preliminary Plan & PUD Amendment June 2015                                               Exhibit 16 | Revised Preliminary Drainage Report (HCE)                  1517 Blake Avenue, Suite 101 Glenwood Springs, CO 81601 970.945.8676 phone 970.945.2555 fax www.hceng.com PRELIMINARY DRAINAGE REPORT FOR LAKE SPRINGS RANCH PUD GARFIELD COUNTY, COLORADO PREPARED FOR: Berkeley Family Partnership 408 Aspen Business Center, Suite 209 Aspen, CO 81612 PREPARED BY: High Country Engineering, Inc. 1517 Blake Avenue, Suite 101 Glenwood Springs, CO 81601 (970) 945-8676 September 2, 2010 Revised March 20, 2015 HCE JOB NUMBER: 2041025.00 2 | Page TABLE OF CONTENTS SECTION PAGE I. Location and Description of Property 3 II. Drainage Basin Criteria 3 III. Drainage Facility Design 4 IV. Existing Basins 6 V. Proposed Basins 7 VI. Results and Recommendations 10 VII. Conclusions 11 VIII. References 12 IX APPENDIX Exhibits 1. Vicinity Map (8.5x11) 2. Existing Basin Map (24x36) 3. Proposed Basin Map 3,3A-3G (3G=Existing Offsite Basins) (24x36) 4. Soils Map(SCS) (11x17) 5. NOAA Map, 2-year (8.5x11) 6. NOAA Map, 25-year (8.5x11) 7. NOAA Map, 100-year (8.5x11) 8. Colorado Mountain College Drainage Agreement Calculations Hydrologic Computations 3 | Page I. Location and Description of Property A. Property Location The proposed development, Lake Springs Amended PUD, is an approximately 459.38 acre site with Spring Valley Road and County Road 114 located within the center portion of the project. The proposed development consists of 194 single-family lots (77 of which have been sterilized through a conservation easement), with the typical lot size being 0.9 acres. The smallest lot within the subdivision is 0.658 acres. See Exhibit 1 for the Vicinity Map. There is a significant area of offsite drainage affecting this property from the east, west, and south of the property. B. Property Description This site is located on approximately 459.38 acres of undeveloped pasture/grassland that slopes toward the west to the low lying area on the property currently surrounded by a sod farm operation. The overall site is relatively steep with surrounding steep hills and drainage ways. The existing low point of the property leaves the property to the north across County Road 119 and eventually to the Roaring Fork River. The seven soil types located on the site are within hydrologic soil groups ‘B’, ‘C’ and ‘D’; per the NRCS soils map. Refer to Exhibit 4 in the appendices for the descriptions of the soils. The proposed site consists of natural grasses, roadways, a pond, and ditches. The proposed development is delineated as Zone C from the Flood Insurance Rate Maps, Community Panel 08020514655 B, dated January 3, 1986. Zone C is defined as areas of minimal flooding. II. DRAINAGE BASIN CRITERIA A. Regulations AutoCAD’s SCS TR-55 Tabular Method was utilized for this report for onsite and offsite runoff to remain consistent with the Garfield County standards. NOAA Atlas maps for the 25 and 100-year rainfall intensities were used to determine runoff from each basin. Per the NOAA Atlas, the 2-year, 24 hour precipitation amount is 1.2 inches, the 25-year, 24 hour precipitation amount is 2.0 inches and the 100-year, 24 hour rainfall intensity is 2.4 inches. Peak on-site flows for this site will be primarily rainfall derived since the entire site is below 8,000 feet in elevation. Therefore, the storm drainage system should be more than adequate to handle on-site spring snowmelt runoff when sized for the rainfall events. The AutoCAD hydrology channel calculator was used for channel sizing during the 25-year and 100-year storm events. AutoCAD’s pipe calculator was used to size the culverts for the 25-year storm event per the Garfield County’s specifications. Weighted curve numbers based on the soil types and land uses were used to determine the runoff from each of the basins. 4 | Page B. Hydrologic Criteria The proposed development characteristics were broken down to open space, roadways, and proposed development (0.9-acre typical single family lot size). The existing basins were modeled as having open pasture/grasslands in fair condition as well as asphalt roadways. The proposed site will ultimately undergo grading for the proposed roadways, drainage facilities, and the proposed 1 acres single-family lots. III. DRAINAGE FACILITY DESIGN A. Offsite Basin Description Six offsite basins located around the proposed site contribute runoff to the west end of the subdivision. Most of these basins do not affect the proposed lots since they are routed around the proposed lots to the agricultural western end of the property where much of the land has been conserved. The offsite basins were analyzed to determine the amount of runoff that ends up in the low lying portion of the property. The offsite culverts that convey the offsite drainage to the proposed detention pond were not analyzed to determine if they had enough capacity to convey to the proposed ponds since these culverts are outside the scope of our drainage design. The major existing basins (EX-OS1) that is routed through the west end of the property has a time of concentration of 113.22 minutes, while the proposed time of concentration for the onsite basins to the to the low end of the property are all below 32 minutes. So the basins will not peak at the same time when they travel through the low end of the property where all the basins eventually end up. The lag time will provide sufficient time for the proposed onsite drainage runoff to peak in the west end of the property before the major existing offsite basin reaches a peak flow. EX-OS1 is 5 times the size of the entire Lake Springs Ranch and thus the peak flow at the end of the property is controlled primarily by the offsite basin. Offsite basin EX-OS1 encompasses the area to east and north of the proposed site. The runoff from basin EX-OS1 drains south, near the eastern property boundary, then west below the southern property boundary, where it then crosses beneath County Road 114 via existing culverts. EX-OS1 receives runoff from existing basins EX-2, EX-3, EX-4, and EX-5. EX- OS1 also receives runoff from proposed basins PR-21, PR-25, PR-27, and PR 31. This runoff from EX-OS1 then enters EX-OS6 west of County Road 114 and then travels northwest to the proposed detention ponds within the property discussed later herein this report. EX-OS6 also receives direct runoff from a number of onsite basins that flows down County Road 114 and from the existing landscape/irrigation pond on the east side of County Road 114 which makes up EX-10 as well as EX-OS-5. The proposed basins that directly flow to EX-OS6 include PR-8, PR-16, and PR-17. The additional flow generated by the build out of the property will increase the overall flow onto the Colorado Mountain College property that sits within EX-OS6 but there is a signed agreement with the College (Exhibit 8) that allows a percentage increase in flow during the major runoff events. This has been the path of 5 | Page the existing runoff from the landscape/irrigation pond historically and it was determined that the College had no intention to develop this corner of the property. Offsite basin EX-OS5 is located near the southwestern corner of the property, between the property boundary and County Road 114. The runoff from this basin drains northwest to a low point and culvert near the east side of the County Road 114. Offsite basin EX-OS5 is located north of basin EX-OS4. Offsite basin EX-OS4 is also in the southwestern corner of the property and drains north into basin PR-17 and then is collect by EX-OS5. Offsite basin EX-OS3 is located north of the proposed development and drains onto the development through existing basin EX-8 and proposed basin PR-1. The runoff from this basin ends up entering the northern end of the low lying area on the west end of the property. Offsite basin EX-OS2 is above the northeast corner of the development. The runoff from basin EX-OS2 drains along south side County Road 114 and into existing basin EX-10 and proposed basin PR-10. All of the offsite basins defined eventually end up in basin EX-1 which is a basin that includes some onsite land within the existing sod farm including the two existing irrigation ponds and some offsite areas to the west of the property. This basin will not have any development occurring as part of the subdivision build-out other than some modifications to the outfall of the northern pond across County Road 119 and any necessary culvert improvements for any agricultural property improvements. The “pasture/grassland-fair” curve number for soil types ‘B’ (CN 69), ‘C’ (CN 79), and ‘D’ (CN 84) and “asphalt” (CN 98) curve numbers were used to create composite curve numbers for each drainage basin. Table 1: Offsite Basin Composite Curve Number BASIN B Group Soil C Group Soil D Group Soil Impervious Composite CN EX-OS1 44.02% 55.98% - - 75 EX-OS2 70.63% 29.37% - - 72 EX-OS3 - 100.00% - - 79 EX-OS4 - 100.00% - - 79 EX-OS5 85.57% 14.43% - - 71 EX-OS6 49.74% - 49.43% 0.83% 77 Table 2, below, shows the runoff characteristics for the offsite basins. Sheet flow lengths were set to a maximum 300 feet. Refer to the appendices for more complete calculations. Table 2: Offsite Basin Characteristics BASIN AREA, ACRES TC (MIN) CN Q25-YEAR,CFS Q100-YEAR,CFS EX-OS1 2276.8654 113.22 75 232.43 395.67 EX-OS2 4.7591 29.40 72 0.74 1.46 6 | Page EX-OS3 12.7121 26.19 79 5.28 8.06 EX-OS4 0.7866 11.43 79 0.46 0.70 EX-OS5 7.1042 18.33 71 1.25 2.55 EX-OS6 152.4295 45.61 77 37.19 58.79 B. Onsite Basin Description Onsite runoff sheet flows to existing gullies where it is routed offsite in shallow concentrated flows. Each lot will be graded to convey the runoff from the lot to the proposed roadways. Runoff from the offsite basins will be routed through the proposed site to their historic discharge points. The proposed Lake Springs Amended PUD site was designed to carry the 25-year storm event down the roadside swales to proposed culverts throughout the site. In the event of a 100-year storm event, the runoff will be safely conveyed through the property across roads, down property lines, and along the roadside swales to the proposed detention facilities. Any detention volume required onsite would be sized to accommodate the increase in flow between the onsite 25-year peak runoff versus the onsite 25-year peak runoff rates. IV. EXISTING BASINS The existing site was broken down into 10 onsite drainage basins that cover the entire property. Existing basin EX-1 is located in the western portion of the site as well as some offsite land to the west. This basin includes lowest points on the property where most of the offsite and onsite basins are conveyed prior to exiting the property. There are currently areas of irrigation storage and wetlands at the lowest points of the property. Any modifications to the conserved portion of this basin would require approval by the Aspen Valley Land Trust. AVLT has given preliminary approval for passing additional flow through the conserved property as long as major grading is not required. The runoff from basin EX-1 flows north across the flat portions of the development and is captured in the existing ponds when the rain event flows are large enough. The northern pond is currently used as a source of irrigation water below the outfall culverts to County Road 119. Existing basins EX-2 and EX-3 are basins on the northeast corner of the property that flows east to basin EX-OS1. Basin EX-4 and basin EX-5 are basins on the south side of the property that also flow directly to EX-OS1. Basin EX-6 is on the southeast corner of the property and flows west to EX-OS5. Basin EX-7 and EX-9 are located on the north end of the property and flow north and do not eventually end up in EX-1 with the rest of the basins. Basin EX-8 makes up most of the land between County Road 114 and EX-1 and drains directly to EX-1. Basin EX-10 includes much of the land east of County Road 114 and drains directly to EX- OS6. The “pasture/grassland-fair” curve number for soil types ‘B’ (CN 69), ‘C’ (CN 79), and ‘D’ (CN 84) and “asphalt” (CN 98) curve numbers were used to create composite curve numbers for each drainage basin. Sheet flow lengths were set to a maximum 300 feet. Table 4, below, 7 | Page shows a summary of the unrouted flows for the existing basins. Refer to the appendices for complete calculations. Table 3: Existing Basin Characteristics Composite Curve Number BASIN B Group Soil C Group Soil D Group Soil Impervious Composite CN EX-1 84.74% - 15.26% - 72 EX-2 100.00% - - - 69 EX-3 100.00% - - - 69 EX-4 100.00% - - - 69 EX-5 72.16% 27.84% - - 72 EX-6 - 100.00% - - 79 EX-7 30.98% 69.02% - 76 EX-8 52.29% 30.11% 16.95% 0.65% 75 EX-9 - 100.00% - - 79 EX-10 30.11% 67.18% - 2.71% 77 Table 4, below, shows a summary of the unrouted flows for the existing basins. Sheet flow lengths were set to a maximum 300 feet. Refer to the appendices for complete calculations. Table 4: Existing Basin Characteristics BASIN AREA, ACRES TC (MIN) CN Q25-YEAR,CFS Q100-YEAR,CFS EX-1 254.4295 44.71 72 31.08 61.99 EX-2 5.9181 15.16 69 0.74 1.64 EX-3 10.9278 14.14 69 1.68 3.70 EX-4 18.7643 18.76 69 2.88 6.35 EX-5 2.1733 14.37 72 0.55 1.07 EX-6 7.3242 18.87 79 3.54 5.42 EX-7 2.3709 16.28 76 1.24 2.04 EX-8 146.8846 35.13 75 33.08 56.89 EX-9 4.6246 27.11 79 1.70 2.62 EX-10 158.6150 30.94 77 48.81 76.93 V. PROPOSED BASINS The proposed construction within the site consists of the construction of roadways, drainage facilities, and residential lots. The lots range in size from approximately 0.65 acres and 1.7 acres. The proposed lots were assumed to be walkout style lots in many cases. The proposed lots will not be overlot graded as part of the subdivision scope of work but for purposes of the drainage study the basin lines fit our expectations of the how the final grading of the lot will be addressed. 8 | Page The proposed site was broken down into thirty-four basins. Many of these basins could be combined to create larger basins, but the basins were sized in order to correctly size the proposed culverts throughout the subdivision and to make sure that the roadside swales were sized large enough to handle the flows from the basins when the grading plans for the individual phases of the project are completed. Most of the property eventually drains to EX-1 before exiting the property at the low point of County Road 119. Basins PR-33 and PR -34 will be routed to a proposed drywell for water quality treatment before draining to the north. There will also be a drywell to provide some water quality for proposed Basins PR-29 and PR-30 before draining to EX-OS1 which is off the property. The drywells are not required for detention volume since there is not an increase in flow for the 25yr storm from existing conditions. Refer to the drainage basin maps 3-3F for proposed basin locations and information. There are a number of basins that will temporarily leave the property before being routed to basin EX-1. These basins do not increase the runoff to EX-OS1 by not including the areas of the homes, roads, or driveways in the basin and so do not increase the runoff beyond the existing flowrates. These basins include PR-17, PR-21, PR-25, PR-27, and PR-31. There will not be any driveways or building envelopes within these basins. The rest of the proposed basins either drain directly to EX-1 or are conveyed through the northeast corner of the Colorado Mountain College property before entering EX-1. These basins that are routed through the CMC property have been approved by CMC to have an increase in flow for the build-out of the property along a defined approximately 1,500 LF path. AutoCAD’s TR-55 hydrology curve numbers for residential lots of 1-acre were used for all lots, asphalt roads were used for all impervious areas, and pasture/grassland-fair curve numbers were used for all undeveloped areas. Composite curve numbers were determined for each basin using the curve numbers previously above within soil types for the undeveloped pasture/grassland areas. The areas within the developed lots will have a curve number for soil types ‘B’ (CN 68), ‘C’ (CN 79), and ‘D’ (CN 84) and “impervious” (CN 98) curve numbers were used to create composite curve numbers for each drainage basin. Table 5: Proposed Basin Characteristics Composite Curve Number BASIN Undeveloped -B Group Soil Undeveloped -C Group Soil Undeveloped -D Group Soil Lot – B Group Soil Lot – C Group Soil Lot – D Group Soil Impervious Composite CN PR-1 54.95% 20.80% 9.19% - 14.64% - 0.42% 74 PR-2 - 81.71% - - - - 18.29% 82 PR-3 - - - - 91.08% - 8.92% 81 PR-4 - 55.36% - - - - 44.64% 87 PR-5 23.49% 20.67% - - 44.38% - 11.46% 79 PR-6 - - 48.94% 7.11% - 41.37% 2.58% 83 PR-7 - - - 74.33% - 11.95% 13.72% 74 PR-8 11.02% - 23.90% 36.85% - 16.62% 11.61% 78 9 | Page PR-9 32.00% - - 64.08% - - 3.92% 69 PR-10 11.73% 16.59% - 10.36% 58.01% - 3.31% 77 PR-11 - 10.65% - - 82.25% - 7.10% 80 PR-12 1.62% 3.30% - - 83.46% - 11.62% 81 PR-13 3.53% 29.75% - 15.48% 44.98% - 6.26% 78 PR-14 - 89.64% - - 10.12% - 0.24% 79 PR-15 15.84% 8.26% - 2.38% 56.47% - 17.05% 80 PR-16 9.66% 37.09% - 14.09% 37.39% - 1.77% 77 PR-17 - 83.67% - - 16.33% - - 79 PR-18 - 3.26% - - 80.55% - 16.19% 82 PR-19 - - - 32.47% 45.72% - 21.81% 80 PR-20 - - - 22.77% 72.25% - 4.98% 77 PR-21 93.07% 6.93% - - - - - 70 PR-22 12.11% 16.48% - 44.20% 22.12% - 5.09% 78 PR-23 - - - 90.84% - - 9.16% 71 PR-24 29.68% - - 52.73% - - 17.59% 74 PR-25 33.77% - - 66.23% - - - 68 PR-26 14.23% - - 51.88% - - 33.89% 78 PR-27 77.53% - - 22.47% - - - 69 PR-28 20.19% 2.47% - 30.69% 41.08% - 4.57% 74 PR-29 - - - 92.80% - - 7.20% 70 PR-30 62.87% - - - - - 37.13% 80 PR-31 100.00% - - - - - - 69 PR-32 - - - 88.33% - 11.67% 72 PR-33 - - - - 86.61% - 13.39% 82 PR-34 - - - - 90.70% - 9.30% 81 Table 6, below, shows a summary of the unrouted flows for the existing basins. Sheet flow lengths were set to a maximum 300 feet. Refer to the appendices for complete calculations. Table 6 Proposed Basin Characteristics BASIN AREA, ACRES TC (MIN) CN Q25-YEAR, CFS Q100-YEAR, CFS PR-1 113.0274 31.39 74 23.60 43.10 PR-2 1.6340 16.00 82 1.02 1.50 PR-3 3.3982 16.26 81 1.95 2.90 PR-4 0.2462 6.00 87 0.35 0.47 PR-5 8.5948 15.08 79 4.15 6.36 PR-6 10.4031 22.06 83 6.03 8.81 PR-7 3.4856 22.06 74 0.96 1.74 PR-8 6.4428 29.19 78 2.17 3.38 PR-9 4.9026 18.44 69 0.61 1.36 PR-10 6.4666 18.49 77 2.60 4.11 PR-11 14.3498 22.71 80 6.49 9.77 PR-12 4.7929 6.00 81 4.35 6.36 PR-13 14.0915 24.45 78 5.36 8.30 10 | Page PR-14 25.4796 24.17 79 10.58 16.15 PR-15 21.7402 15.56 80 11.46 17.30 PR-16 17.8558 21.43 77 6.20 9.75 PR-17 6.8281 21.99 79 2.83 4.33 PR-18 2.2161 12.70 82 1.66 2.43 PR-19 4.3939 21.89 80 1.99 2.99 PR-20 5.5987 22.39 77 1.94 3.06 PR-21 1.6369 15.62 70 0.24 0.52 PR-22 11.3726 17.29 78 5.02 7.81 PR-23 9.7614 26.46 71 1.46 3.00 PR-24 2.0850 16.29 74 0.57 1.04 PR-25 13.9490 17.16 68 1.44 3.37 PR-26 1.0478 6.00 78 0.75 1.14 PR-27 12.3697 14.71 69 1.90 4.19 PR-28 16.1193 17.88 74 4.44 8.04 PR-29 5.2776 16.73 70 0.79 1.67 PR-30 1.0133 6.00 80 0.85 1.26 PR-31 1.2525 18.41 69 0.16 0.35 PR-32 0.8678 16.25 72 0.18 0.35 PR-33 1.033 16.47 82 0.64 0.95 PR-34 1.5293 13.94 81 1.06 1.56 The difference between onsite historic and onsite developed flows were used to determine whether detention would be required on EX-1. Grass lined channels and culverts will be utilized to convey the proposed runoff to EX-1, as well as offsite to historic locations. VI. RESULTS AND RECOMMENDATIONS The majority of the site will be routed to the low end of the property within basin EX-1. The only basins that will direct discharge from the site without ending up in basin EX-1 are basin EX-7, PR-33, and PR-34. These basins will sheet flow offsite to the north and to the west, downstream of EX-1. The flow is not increased from these basins so there is no reason to include in the detention calculations. The lower portions of EX-1 have existing wetlands and irrigation storage in the middle of the existing sod farm operations. This area is capable of passing the 100-yr existing and proposed flow and not affect any of the lowest residential lots in Filing 2. The existing runoff to EX-1 is 265.98 cfs for the 25-yr storm and 443.05 cfs for the 100-yr storm. The proposed runoff to the detention pond area is 261.58 cfs for the 25-yr storm and 436.05 cfs for the 100-yr storm. The outfall from the property will be at the low point along County Road 119. Culverts will be installed at this location to convey the 25-yr storm under the 11 | Page County Road during the first phase of construction. This will require the installation of twin 48” diameter culverts to convey the 261.58 cfs flowrate. The 100-yr storm will be allowed to pass over the top of the road which is the historic path of the major runoff events when the County Road 119 was constructed. This version of the Lake Springs Ranch drainage study is a reflection of an expansion of the area of influence from storm events to include all of the agricultural land on the west end of the property which includes the parcels of land that have been conserved over the last decade. These areas also required an expansion of the offsite basins that impact the property. The calculations of the curve numbers for each individual proposed basin was also reevaluated in order to keep up with the most current street and lot layout. This correction for the 25-year 24-hour design storm event and the revised routing of the drainage basins resulted in a small reduction in the peak flowrate for the proposed build-out of all the filings of the subdivision. The proposed onsite basins within the subdivision are peaking earlier than the existing onsite basins. This means the overlap of the onsite peak flows from the major offsite basin is reduced and thus reduces the overall peak flowrate. There will not be an increase in the runoff from the property during the 25-year 24-hour storm event which is the basis for calculating detention in Garfield County. The minimum culvert size of 18” diameter CMP will be installed unless the basin calculations show a need to upsize the culverts. The culverts throughout the subdivision will be sized according to the 25-yr 24-hr storm from the individual proposed basin as part of the final plans for the individual filings. The drainage swales along County Road 114 will be 10’ wide and 2’ deep minimum as was determined in earlier approvals. The rest of the roads within the subdivision will have a minimum of 6’ wide and 18” deep swale. All of the roadside swales and major swales along property lines will be verified for capacity as final plans for each filing are submitted to Garfield County for review. VII. CONCLUSIONS The drainage facilities have been designed per Garfield County’s standards and regulations. The proposed storm drainage facilities have been designed to accommodate the runoff from this site. The proposed storm water flows will be treated and detained prior to discharging offsite and runoff from the proposed site will be kept at historic levels for both the 25-year and 100-year storm events. The drainage calculations were based upon the above-stated assumptions and are subject to change upon final site design and build out and any modification in the grading plans of the individual phased construction plan sets. 12 | Page VIII. REFERENCES National Oceanic and Atmospheric Administration: Precipitation-Frequency Atlas of the Western United States, Volume III-Colorado. Silver Springs, MD 1973. United States Department of Agriculture, Soil Conservation Service: Soil Map–Aspen- Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties, Web Soil Survey. Soil Conservation Service U.S. Department of Agriculture: Procedures for Determining Peak Flows in Colorado 1984.           IX.     APPENDIX            EXHIBITS  • l I l t··-----:-- - HIGH COUNTRY ENGINEERING, INC. rER=::g~:" DMWHar. ••..W:.-DRIVl:-=:Jfc ... 1-.•JZWGD•lla • .. .,.._,...,.,.PIJD CMECKEDBr. --·---· .._..._ .-......_ 20oll026.CO t•l711MBAm=.erJ:&k .... IWOOO:'m'CO•t•1 ¥ICINJ'IYMAP DA'll: PNE. -aa 1 ·~-f=:...=&2().:.::::...:..:lli:....__ __ --=EXH=IB0":...:1_--.1 PU: J:~I02.&IDWGl\llCMAP 1• •2000' \ \ \ \ \ \ \ \ \ \ \ \ I I I I /! ""' ""' I ( \ \ \ \ \ \ \ \ \ I \ I I \ \ \ I I I I I I \ \ I \ \ \ \ \ I \ \ \ \ \ / I \ \ I \ \ \ \ \ \ \ I ' \ I \ ' l\\ .. -~- \ \ \ \ \ \ \ \ I \ I \ ---J I ~ \ --~ \ \ I I fi 't:..111.---,---~~-o[__ 'm GR~PIIIC SCALE \ Ll~~------~--1f---1-'l111111C --~Ir .......... C'11 ~.JOTE3: ( TN FFFT ) · 1 inch = 300 ft. LEGEKD -n~rn - xx x 0.00 ACRE" DO I Q~CO: 0.00,__ CFS 25. 0.00 CFS E>'.ISTl~-IG BOUl-IDARY EXISTl/"C 1C' CO/HOUR DRAll'jAGE 3AS f\j EOU~-IJARY DRAINAGE =-LO'N P.RRO'f/ BAS/~J Jcll~IEAT/01' 6~RES~E!'Sll" SIZE ",\-/,=_, Bi\Sll\J 1·\J,"'.lvl=- Cl,I= l_.111~1/I l,111~'11111~ 01 JD= 100 ·vEt.,:::> 0')5-" , . , RUl\J:JFF (CFS' ~ -L5 YE.6.~ RUf\IJFF (CFS) I ., rx1:;11~Jc; lf\I -(lh'lv1A 1101\J 1 :Hll\/llJf-IJ HY H i;H COUN lkY f-~J(;l\Jf-f-Hll.J(,, lf'JC. \ \ \ \ ~ \ \ \ I \ \ \ \ ' ' \ ., I I I . \ I l. \ \ t 1 I \ I I I I I \ I \ '-.._ \ ' \ \ \ \ \ I \ \ ' ) ( EXISTll~G ;; I ()r/A(;f- \ \ I \ \ I \ \ \ \ ----- I \ I I EX 1 254.7681 ACRE~ CL n I Q~OOi 6199 CFS 25: 31.0B CFS --- -_-L---- --------------- \ I I \ \ \ \ ' -'\ / \ \ \ . \ \ I \ I \ \ \ I \ \ \ \ ! \ I I I \ \ \ \ \ ,,... ·--- ' 0 / / I \ \ ~1 ) / ( \ \ \ \ / '•. I I ""'"b., ' ,,--.._~'\\__ __ _ I \._ <\ \ \...:..\ \ \ I \ \ \ I J "I I ! I I \ / \ \ \ ! / ' i I I I I I \ J \ \ \ \ \ \ I ', I \ i / ! \ \ I I I I ( \ I I ' ( - - I ! / ' I I \ \ \ \ EX 036 l52/l295 ACRES CN: ?7 IQ 1 no .'1P.7R Cli':S 0 25: 31' 19 CFS I l I b:X o 7.3242 ACRES Cl\ ?D QlOO: 5.42 CFS Q251 3.54 CFS CN1 EX R 0 1......,00 -r.... r 00 ACRES 72 Ql001 107 CFS 25: 0_5;::, CFS I I r I ' \ / ., \ \ I \ !..... i I --',,,. / I I ; ;· \ \ I --1\0C·- \ '•. ... I / - ---- '• r -'I I _,,,,_ I I ! / I I I ! >-0 0 0 rn o:: o:: o:: 0 0 0 ill (9 6 ~ Ui u ~ 0 0:: z 0 0.. • 0 z - 0.. -I Ul 0:: w z z 0 j:: z ~ 0 b'. 0 <( u 0.. • >-0 .J .J _w ::!: -<( IL. !L. ~ ~ (9 w ~ 0:: ]JJ CD PROJECT NO. 2041025 2 I I I I /i - / I ( I \ I \ \ \ \ \ \ \ \ \ I \ I I \ \ \ \ \ / ( I I "' ' \ \ \ \ \ \ \ \ \ \ ~ I \ I \ \ ..... -------- ..... "" ..... ..... "" ..... ..... LEGEND - NOTES: EXISTING BOUNDARY EXISTING MAJOR CONTOUR PROPOSED MAJOR CONTOUR PROPOSED LOT LINE DRAINAGE BASIN BOUNDARY DRAINAGE FLOW ARROW 1. EXISTING INFORMATION PROVIDED BY HIGH COUNTRY ENGINEERING, INC. 2. REFER TO SHEET 3G "OFFSITE BASIN MAP" FOR OFFSITE DRAINAGE BASIN INFORMATION • ------------.............. ..... ..... ..... ..... GRAPHIC SCALE 300 0 1150 300 800 I I I I I ( IN FEET ) 1 Inch = 300 ft. -I I w 0: l) IJ..~ w ~o:OE z > z >0(!)..J Qo r-w ~gj~s s~ 00 ~ -o Ol 0: ~~~ffi IL -l;j Ul(!)::! OJ f:..J I ~ ·UJ::! oON::;: z 0 Nz o~:r::LJJ UJCl-:ll ~IL ()) -UJ::>O: 0 0 • 0 ..JO: 0 0 woEz i=J" 0 " z>-:::> iiiWJ"O ::>z 00 ~ :::>°' <( 0: ..J • . ..Jw ..... ~ rnO>l9 .:U Cl c{JIL~O: u "' ..Jw UJ 0: ;;!'D><D 0 UJZ u :::> ' >-D D D aJ 0: 0: 0: D D D i 0 s: ~ w g > UJ w "' z 0: c 0 ?:: z 0 Ui .. > z z :i 0 w 0 ;:: cri 0: z z u UJ 0: ID ~ w c 0.. "' (lJ D UJ D .. w c w Ul w ~ > (/) w ~ 0: "' 0: N O'l Ill ~ --" -" " Ol (() 0 D -" N " IXl " -O'l ci -N (") z 0 z ~ ~ ~ -tb ~ ~< o D ~ D ~ ':! Ii! ~ ~ Q i5 " 1200 I PROJECT NO. 2041025 3 \ f --. \ I I ,V I I ..... I I I I I \ \ ' ' \ \ \ \ \ I \ ' ' ' ' \ I \ / / / \ '- / I \ I --' ' \ \ \ \ \ \ \ \ \ \ GRAPHIC SCALE 50 100 200 400 ~-1~1 --~I ~~~I ( IN FEET ) 1 inch -100 ft. \ " ' ' I / _,.. ___ __.. KEY MAP r. 2000' ---------- ----_,..- LEGEND EXISTING BOUNOARY ----------------EXISTING EASEMENT - - -6980 - - -EXISTING MAJOR CONTOUR - - - - - -EXISTING MINOR CONTOUR ---------- 0.00 ACRES NOTES: PROPSED MAJOR CONTOUR PROPOSED MINOR CONTOUR DRAINAGE BASIN BOUNDARY DRAINAGE FLOW ARROW BASIN DELINEATION ACRES=BASIN SIZE XX-X= BASIN NAME CN= CURVE NUMBER 0100= 100 YEAR RUNOFF (CFS) Q25= 25 YEAR RUNOFF (CFS) 1. EXISTING INFORMATION PROVIDED BY HIGH COUNTRY ENGINEERING, INC. ~ _ __.. ·-' I I I I I w c:: l) IJ..~ w ~c::OE z > z >0(!)..J Qo r-w ~gj~s s~ 00 ~ -o Ol c:: ~~~ffi IL -l;j Ul(!)::! OJ f:..J I ~ ·UJ::! oON::;: z 0 Nz o~:r::LJJ UJCl-:ll ~IL ()) -UJ::>C:: Cl 0 • 0 ..JC:: 0 0 woEz i=J" 0 " z>-:::> iiiWJ"O ::>z 00 ~ :iC:: <( c:: ..J • . ..Jw ..... ~ rnO>l9 .:U Cl c{JIL ~ 0:: u "' ..Jw UJ 0:: ;;!'"><Cl 0 UJZ u :::> >-D D D D al 0: 0: 0: 0: D D D D ~ i z 0 0 ~ z ~ w u ::;: g g ::;: LU UJ a:: 0 c:: 0 z u c z ...: 0 ?:: z 0 :i 0 a. 0 Ui 11. z z z '.5 > :i 0 0 w 0 ;:: ~ 0: z z u UJ LU 0: ID !;; ~ w c 0 0.. c:: a:: al D UJ LU D 11. a. w c 0 w Ul w LU Ul > (/) ~ > w ~ w 0: c:: 0: N l'l II) II) ~ ---' ' -' ' Ol N II) 0 D ---' ' ' ' -IX) N l'l ci -N l'l 'f z Q: 0 :r 0 • lLI ~~ c tl) :i i( wo z _J a:~ D. I-0 ~u (I) ~ i( ;g ~c ~ -c z -:i ~o 0:: lLI tij ~u D. (I) i( en o m fu 0 _J _J lLI D. w !!:! ~o ~LL. ~ 0:: 0:: 0:: w <( D. ro <.9 PROJECT NO. 2041025 38 , / / I / I / / I \ / _,,..-- / / / / -\ ---__ __,_ 100 I KEY MAP f • 2000' LEGEND - --6980-- - ---------- 0.00 ACRES NO"TES: EXISTlNG BOUNDARY EXISTlNG EASEMENT EXISllNG MAJOR CONTOUR EXISTlNG MINOR CONTOUR PROPSED MAJOR CONTOUR PROPOSED MINOR CONTOUR DRAINAGE BASIN BOUNDARY DRAINAGE FLOW ARROW BASIN DELINEATION ACRES-BASIN SIZE XX-X-BASIN NAME CN-CURVE NUMBER Q100-100 'rEAR RUNOFF (CFS) Q25-25 YEAR RUNOFF (CFS) 1. EXISTING INFORMATION PROVIDED BY HIGH COUNTIRY ENGINEERING, INC. GRAPHIC SCALE 0 "" 100 200 ""' c•:::J --I I I I I ( IN FEET ) 1 inch -100 ft. I ~ ~ ~ ~< o D ~ ':! Ii! Q i5 Q: 0 :r 0 ~~ wo z _J I-0 0:: u ~~ ~z -:i ~o ~u fu 9 .Jw w-~ l.L. 0:: 0:: w <( ro <.9 0 z -tb ~ ~ D ~ " ~ PROJECT NO. 2041025 3C I J,· / .J I /8 f ~ ,,·,: I I ')';,..-<:::,,,~ J I I I I -~ I I II I I I I I I / / • I I I I I I ' I I / / I "A J I ,., I I I I I / I / I I I I I / I I I / I I I I I I I I I / / / / / I / / / / / / / I I I I I I I I I / / ,/ / / / / / ( I I I I I / / I I I / / / I I I I I I I 1~/ I I I I I I I I ! I I I I I I / I I I I I I I I I I I I I I I I \ \ \ \ /1 .:11 '11 /~ ' \ I I \ ' \ \ \ \ \ \ <. I \{ I \ \\ \. ', \' \~ \ ' ' ' ' I \ \ \' \ \ \ \ \ \ \ --.. --.. --.. -~ --.. / ( I I I _,-" /' /\ I ) .., ( ,~J, \ '------..... ~I \. I , I / I / I / I / \ / ' ..... ..... ' ----........... ------.......... ----/ / --_ ..... KEY MAP r-2000' LEGEND EXISllNG BOUNDARY ----------------EXISllNG EASEMENT -6980--EXISllNG MAJOR CONTOUR ------------EXISllNG MINOR CONTOUR --------- 0.00 ACRES NOTES: PROPSED MAJOR CONTOUR PROPOSED MINOR CONTOUR DRAINAGE BASIN BOUNDARY DRAINAGE FLOW ARROW BASIN DELINEATION ACRES=BASIN SIZE XX-X= BASIN NAME CN= CURVE NUMBER Q100= 100 YEAR RUNOFF (CFS) Q25• 25 YEAR RUNOFF (CFS) 1. EXISTING INFORMATION PROVIDED BY HIGH COUNTRY ENGINEERING, INC. I GRAPHIC SCALE ,~-i-Tiiiiiiiiiiiiiii~i~~~i ( IN FEET ) 1 inch = 100 ft. >-D D al 0: 0: D D z i 0 Q !;i !;;: u u 0 g ...J w w c:: 0: 0 z Cl z 0 z 0 0 a_ Ui a. z > z 0 w 0 i= 0: ~ z w w I-I-w w 0 Cl c:: 0: w w a_ a. Cl Cl w w ~ Ul > w UJ 0: c:: t'l IO IO ~ ---' ' ' '° "f 0 D -' ' ' 00 N t'l ci -N t'l z 0 z ~ ~ ~ -tb ~ ~< o D ~ D ~ ':! Ii! ~ ~ Q i5 " PROJECT NO. 2041025 30 ' '-' '\ \ KEY MAP r-2000' \ \ ------....__ __ _ GRAPHIC SCALE 100 0 '50 100 200 "400 ~I -~-~-~•-..1_1 ~I -•1----1 (mFDT) 1 inch = 100 fl LEGEND EXISTING BOUNDARY ----------------EXISTING EASEMENT - - -6980- - -EXISTING MAJOR CONTOUR - - - - - -EXISTING MINOR CONllOUR ---------- 0.00 ACRES NOlES: PROPSED MAJOR CONTOUR PROPOSED MINOR CONTOUR DRAINAGE BASIN BOUNDARY DRAINAGE FLOW ARROW BASIN DELINEATION ACRES=BASIN SIZE XX-X= BASIN NAME CN= CURVE NUMBER Q100= 100 YEAR RUNOFF (CFS) Q25= 25 YEAR RUNOFF (CFS) 1. EXISTING INFORMATION PROVIDED BY HIGH COUNTRY ENGINEERING, INC. I ------- ----/ -eeeo --- / - 21.7402 ACRES IRRIGATION PONO (NO DElENTION) REPLACE IRRIGATION PIPE CROSSING AND DRAINAGE OVERFLOW PIPE -· -- I / / I / ____ ,, - r I I I I I I I I I I I / / I I / / / I I I I I I I I I / I / I I I I / I ...--------' / I / / / / I / I / / r I I I I I \ ' ' ,. ,, , \ .; \ / ,, ____ ......., __ _ ,,_..- I I / ' \ l --- --- I I I I I ~ I I ' I I I J l / I I \1 I I ·~, ' I I I \ M* I I I \ I\ ) I I \ I \. __ _..../ I ! \. ,, r-+-· ~~ II I t.§ I , ' ? -' l9N' '10 / '------ w 0: l) IJ..~ w ~o:OE z > z >0(!)..J Qo r-w ~gj~s s~ 00 ~ -o Ol 0: ~~~ffi IL -l;j Ul(!)::! OJ f:..J I ~ ·UJ::! oON::;: z 0 Nz o~:r::LJJ UJCl-:ll ~IL ()) -UJ::>O: 0 0 • 0 ..JO: 0 0 woEz i=J" 0 " z>-:::> iiiWJ"O ::>z 00 ~ :::>°' <( 0: ..J • . ..Jw ..... ~ rnO>l9 .:U Cl c{JIL~O: u "' ..Jw UJ 0: ;;!'D><D 0 UJZ u :::> >-D D 0 0 al 0: 0: 0:: 0:: D 0 0 0 ~ i z 0 0 ~ z ~ w u ::;: g g ::;: LU UJ a:: 0 "' 0 z u Cl z 0 ?:: z 0 ...: 0 a. :i Ui .. z z z 0 > :i 0 0 ~ w 0 ;:: ~ 0:: z u UJ LU 0: ID !;; z w Cl 0 ~ 0.. "' a:: 0 UJ LU al .. a. w Cl 0 w Ul w LU Ul > (/) ~ > w ~ w 0:: "' 0:: N " II) Ill ~ ---" " -" " Ol N " 0 D ---" " " " -IX) N (T] ci -N (T] " z 0 z ~ ~ ~ -tb ~ ~< Q 0 ~ D ~ ':! Ii! ~ ~ Q i5 " PROJECT NO. 2041025 SE ----- LEGEND EXISllNG BOUNDARY ----------------EXISllNG EASEMENT 6980 EXISllNG MAJOR CONTOUR EXISllNG MINOR CONTOUR PROPSED MAJOR CONTOUR PROPOSED MINOR CONTOUR GRAPHIC SCALE ------ ------DRAINAGE BASIN BOUNDARY 100 0 eo 100 200 '400 ... 0.00 ACRES NOTES: DRAINAGE FLOW ARROW BASIN DELINEATION ACRES=BASIN SIZE XX-X= BASIN NAME CN= CURVE NUMBER Q100= 100 YEAR RUNOFF (CFS) Q25= 25 YEAR RUNOFF (CFS) I•• --I 1--1---1 ( IN FllT ) 1 inch = 100 fL I 1. EXISTING INFORMATION PROVIDED BY HIGH COUNTRY ENGINEERING, INC. ---------------~ I I i l I I I I I I I I .·-··-( ;--:\ IRRIGATION\ STORAGE · POND \ / .,,.. ....... \ --- _, -------J""~ \ .--::...-=--..i;-r --/-~ !''!lo. -··-··j -_).........,-------/,..-- -----I ,,,,.,,.--~ ...--~---..,....""' -------i .\ ~ /,,... n -I \ ' , \ I I \ \ I I I \ ~ i \ \ \ I \ \ I\ Ill \ \ \ I \ \ ~ ) \ \: / \ \ \ ~/ \ \ : ( \ \ \ \ \ \~r \ \ \ / \ \ \\ \ \ \ \ \ I \ \ \ \ '~) ',,, \ \ \ ' \ \' ' \ \ ', EXISTING HIGH GROUND \ \'--, ', \ " ' ' " ' ' ' fr ,, I J /' I \ __,..... \ \ ', \ ~ <., \ ~' .... , \' \ ', '< < \ "--....: \ ', \ \ ', \ \ \. .\'--... ...._ IRRIGATig' \ \ \ \ \. -~'TQRAGE \ \ \ \ 1 POND I \ \ \ \ \ \ \ ' ' ' ' \ \\ \ / \ I I . \ \ \\ \\ \ I / \ \ 1 \\ ) ( \~ I \ \ \\ \ I \ "', \ \ \ ', \ I \'. I \ '-\ \ \ \ \ \' \\ \ ',, ·. \ \ I \ ' \ \ ', '\ \ \ \ ________ \ \\ ',,, \ ', \\. ~\ \ -,, ' I ' "-\--...1.._ I \ \ \." \:----\---, \ '\ I \ \ '-......._ \ '-... \ \ \ I \ ',..... '"-\ \ ..... .., \! l \ ..._ -...,. \ I '\ ~ \ \ ---, '--. ~·I /, \ \\ \ \ \.\ I '\/ \ \ \ \ I · I ', \ ) \ ! \~ \ \ \ \ \ M' \. \ \ \ \ \ \. \\ I \ I \ \ \ ', \ '\I \ \ \ I , ',, \ /', \ \ \ \ I \ I ', \ I \ \ \ "' \ \ \ '-I I '-I I ', \ \h ... '\ \ \ ~',><.,-.... \ \ ~~---~ \ r:'<./"' \ .,.,../,.....\ v ' '\. '-...., ', - \. ' ', ----\ ----------------~ _.:..._ --.-·----------------------~----------------« '-~ \ r PROPERTY BOUNDARY \ "'"-\ I \ '-. \ I \. ' \. <' \ \ ' ~ \. \, \ "' "'~ \ -, ', "' '" \ \ \ "' \ ', \ \\ ", ', \ \. \ \ '\..--, ', I '-\ \ \ \ 'I \ \ ........... ,, \ \ \~\ I 1 0 I \ /\ I \ > \ \ I \ \ \ \ II-/ \ 1· EXISTING HIGH GROUND \ ~ \ \ \ \ \ \ .... \ ' \ \ \ -------\ \ \ .... __ ----a....i----~~----------------------------------------~-------~--\·~=4\~<~-"""\~~---------------~------·--------------~~---~;.:_ ___ ~c::-:.~----------~----~ I --... ... I I ... , I I LOW POINT ON I I SOUTH PROPERTY BOUNDARY = 6900.5' I I I I \ \ \ \ \ \ \ I 152.4295 ACRES \ ' \ \..._ ---------------------------- \ ,,~ \ 1'- \ \ \ ' KEY MAP ' ' ' r-2000' \ \ ', \ ' w c:: l) IJ..~ w ~c::OE z > z >0(!).J Qo r-w ~gj~s s~ 00 ~ -o Ol c:: ~~~ffi IL -l;j Ul(!)::! OJ f:..J I ~ ·UJ::! oON::;: z 0 Nz o~:r::LJJ UJCl-:ll ~IL ()) -UJ::>C:: 0 0 • 0 .JC:: 0 0 woEz i=J" 0 " z>-:::> iiiWJ"O ::>z 00 ~ :iC:: <( c:: .J • • ..Jw ..... ~ rnO>l9 .:U Cl c{JIL ~ 0:: u "' .Jw UJ 0:: ;;!"'><D 0 UJZ u :::> >-D D D al 0: 0: 0: D D D ~ i 0 z ~ w ::;: g ::;: UJ 0 c:: z u c 0 ?:: z 0 Ui .. z > z z ~ :i 0 w 0 ;:: 0: z LU u UJ ~ 0: ID w c 0.. c:: ~ UJ D .. 0 w c 0 Ul w LU > (/) ~ w ~ 0: c:: N " "<r ~ ---" " " Ol N 0 D --N " " " -IX) (I) ci -N (I) z 0 z ~ ~ ~ -tb ~ ~< o D ~ D ~ ':! Ii! ~ ~ Q i5 " PROJECT NO. 2041025 3F • , -I • - • • • ..-"' \ \ \ \ \ • - EX-OS3 12.7121 ACRES 79 QlOO: 8.06 CFS 25: 5.28 CFS • • --7 ..... --..... ,,,.-' ,,,. .... ,,,.,,,.,,,. /L ......... , ------' --..... ;--- ; L -- ,,,.,,,.,,,.,,,. )/ -, , l/ ', ,,'' c/ . . 'x, ,' ~ \\ \ l/ //) ',,, ( //// \ \ (/ \ ~~ I \ \ / I -J • I l \ ( \ ~ I \ I I I I I I I I 0 , \ ! ,' \ , \ -,,,. ,,,. ,,,. \ ,,,. \ ~ , ',, \, ,,'' ' c 1' I \ I I I I I I 0 I I I I I I I I • I / c I f ·f \ I \ I \ I /"' ~ I \ I \ I L I I ~/ I • • EX-OS2 ,,,. ,,,. ,,,-- - -T-===;q:~~---~-4. 7591 ACRES CN: 72 Q100: 1.46 CFS 25: 0.74 CFS I I ~~ ,----~E~x--=o~Sl~-: I 2276.8654 ACRES I CN: 75 Q100:395.67 CFS I ' 25, 232.43 CF ' I \ \ \ \ \ \ ' ----' ~ l 0 \ ' ~ \ ....... . ...::.r=..,a \ \ "-;:".~--.:.4--~''-~ --!L+:~' ( . \ ..... -- \ ' ' I EX-1 254.7681 ACRES Q100: 61.98 CFS 25: 31.08 CFS \ \\ \ \ \ \ \ \ ------t :l \ -~ ---.... --I I I EX-OS6 \\' ' r-~1~5~2~.4"'2,_,9~5,_,.A-,,C"oR<eE~S _J "\ CN: 77 Q100: 58.78 CFS 25: 37.19 CFS .......... ..... 0 ------..... ..... ..... 0 ~ v • • --I I I I I .. 1 \ ' I \ \ .... ......... ' ' ' \ \ \ \ I I I I I -, -.. .,,,,..-~, ,..- / -,,,. EX-OS5 7.1042 ACRES CN: ?l Q100: 2.55 CFS 25: 1.25 CF·S - EX-084 0. 7866 ACRES CN: 79 QlOO: 0.70 CFS 25: 0.46 CFS ' I ', I ..... / ..... ,, ,,,..-"'/ .. ' ------------------- I • - l GRAPHIC SCALE 500 1000 2000 1-1--1111111111111111111111111111111~,r IN FEET ) 1 inch = 1000 ft. LEGEND --)~-~-)~-~- xx-x 0.00 ACRES CN: 00 I Q100: 0.00 CFS Q25: 0.00 CFS EXISTING BOUNDARY OFFSITE DRAINAGE BASIN BOUNDARY OFFSITE DRAINAGE FLOW LINE BASIN DELINEATION ACRES=BASIN SIZE XX-X= BASIN NAME CN= CURVE NUMBER 0100= 100 YEAR RUNOFF (CFS) 025= 25 YEAR RUNOFF (CFS) >-IDDDD a: a: a: D D D g N <'l • ~ - -di -. ~ ~ ~ .. IJ.. w IJ.. ~o PROJECT NO. 2041025 3G E > ~--~ Pl Cj) I J I I ~ ~ I ,, r-i > er 5i! "'tl II I e= °' n 8 • -00 ? -n § ~ (/) ~ • I ~ i-3 tI:j t! 1l LAKE SPRINGS PUD ! e GARFIELD COUNTY, COLORADO 2 6 LAKE SPRINGSAMMENDED PUD Jii z SOILS CLASSIFICATION MAP 8 p HIGH COUNTRY ENGINEERING, INC. ALG NO. DATE REVlSJON BY CALJ..UTD.JTYNOT1FICATION CENTER OF COL.ORADO 1 • INVl!;RN~ DRIVI! E;AaT,aTE: l'•l ilO. l!'.NCIJ!:WOOD, CO llllt 1a [ 06~ -ONEC8Q8Ja&BGll>M FAXCBO<D~ 1 8/8/13 RE:VTSE:DPRE:lJMPL.AN l,OTi..,t.YOL!l'. ORD 1-800-922-1967 2 2/12/15 REVISEOSOILSCL.A6SlFICATIONMAP ORD 0Ra34-0tf!l100INME'I'RODENVER PHONE(lnO)~ FAXC970J----. ~~'J:%Vi~El:~'bF-1917 l!!ll..AKI!!: AYDRJE,, llTI! 101, GLENWOOD llJIRING.8. CO 8t 801 fi ;2-1 9'-10 11 CAU... aet.ISINESS DAYS INALNANCE www.~.GDM SCS I UNDERGROUND MEMBER LmLJTIEB r NOAA ATLAS 2, Volume Ill Prepared by U.S . Department o1 Commerce National Oceanic and Atmospheric Adm inistration National Wea1her Service, Office of Hydrology Prepar~d for U.S . Department of Africulture, Soil Cons~rvation Service, Ensineering Division Figure 26 ISOPLUVIALS OF 2-YR 24-HR PRECIPITATION IN TENTHS OF AN INCH • HIGH COUNTRY ENGINEERING INC IRKELEYFAMILYPARTNE:RSHIP DRAWNA~ t 0 GARFIELD COUNlY, CO CHECKED BY: PROJECT No: I• INV&:RNESIJ DRIVE: E:AIJI', SI"&: F·l .O, E"lll~, CO 80 I Ill ALG 204 I 025.00 PHONE(30.1)8ll.B<l&4C FAX(803)112BOIM'7 >-------------------. 11117111.AKEAVENUE,STE IOl,GLENWOODSPRINGB,COBl801 LAKE SPRINGS PUD DATE: 2 • 2 .,_ 1 O PAGE: c'vHIBIT 5 PHONE(tmll=::.97~~70)11--NOAA.MAP, 2YR 1----""-------""'-----1 FIL.E: J:/SDSKPROJ/204/ 1025/DWG/NOAA-2YR.DWG l" .. 40,000' • I NOAA ATLAS 2, Volume Ill Prepared by U.S. Department of Comrnerce National Oceanic and Atmospheric Admin istration Netionel Weather Service, Ottlee of Hydrology Prepared for U.S. Department of Agriculture, S<>il C<>nservetion Servk:e, Engineering Division Figure 29 ISOPLUV IALS OF 25-YR 24-HR PRECIPITATION IN TENTHS OF AN INCH • HIGH COUNTRY ENGINEERING, INC.,R~l~~1~6~~~~HIP DRAWNA~ CHECKED BY: PROJECT No: •••NV&:-=~~~~~·~~·coeo11a 1--_AL_G ___________ 20_4_1_02_5_.o_o_.., 11117111.AKEAVENUE,STE IOl,GLENWOODSPRINGS,C081801 LAKE SPRINGS PUD DATE: 2 •2 6-I O PAGE: EXHIBIT 6 PHONE (ll70)wwwllMINltl7.,,..!.!.AX-COMlll70)11-NOAA MAP, 2S YR 1---.;.;...;._-------------t ~ FIL.E: J:/SDSKPROJ/204/ I 025/DWG/NOAA-25YR.DWG l" .. 40,000' Prepared by U.S. Department of C<>mmerce National Oceanic and Atmospheric Admlnlstratlo11 Nationaf Weather Service, Offic~ of Hydl'ology Prepared far U.S. Department of Agriculture, Soil Conservation Service, Engineering Division Figure 31 ISOPLUVlALS OF 100-YR 24-HR PRECIPITATIO I IN TENTHS OF AN INCH • HIGH COUNTRY ENGINEERING INC IRKELEYFAMILYPARTNE:RSHIP DRAWNA~ t 0 GARFIELD COUNlY, CO CHECKED BY: PROJECT No: I• INV&:RNESIJ DRIVE: E:AIJI', SI"&: F·l .O, E"lll~, CO 80 I Ill SPG 204 I 025.00 PHONE(30.1)8ll.B<l&4C FAX(803)112BOIM'7 >-------------------. 11117111..AKEAVENUE,STE IOl,GLENWOODSPRINGB,COBl801 LAKE SPRINGS PUD DATE: 2 • 2 6-I O PAGE: EXHIBIT 7 PHONE(tmll=::.97~~70>11--NOAA MAP tOOYR 1---------------FIL.E: J:/SDSKPROJ/204/ 1025/DWG/NOAA-1 OOYR.DWG l" .. 40,000'           CALCULATIONS  EX-OS1-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-0Sl-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OSl, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 2276.8654 ac 816.0000 min 232.4300 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) EX-OSl 2276.8654 75 113. 2184 0.0000 2.0000 support Data: subarea Name: Ex-osl, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . O .1300 Flow Length . . ...... ... ... .... .. . 300.0000 ft Two Yr, 24 hr Rainfall ... . . ..... 1.2000 in Land slope . . ... ... . ...... .. .. .. . 0.1333 ft/ft computed sheet flow time ....................... > 16.0908 min Messages: Info: Time of concentration rounded to 120.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . Unpaved Flow Length .... ...... .. .. .. .. .. . 27007.0000 ft watercourse slope .... ...... ..... 0.0825 ft/ft velocity . .. .... .... .. .. .. .... .. . 4.6343 fps computed shallow flow time ..................... > 97.1276 min Messages: Info: Time of concentration rounded to 120.0000 min in row <l>. *************************** Total Time of concentration ......................... > 113.2184 min **************************** Page 1 EX-OS1-100YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OSl-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OSl, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Ti me ...................... . Peak Fl ow ...................... . Given Input Data: Method Type II On 2276.8654 ac 816.0000 min 395.6664 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) EX-OSl 2276. 8654 75 113. 2184 0.0000 2.4000 support Data: subarea Name: EX-OSl, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length .. ... . . . . ....... .. .. . 300.0000 ft Two Yr, 24 hr Rainfall .. . . . ..... 1.2000 in Land slope ....... ........... .... 0.1333 ft/ft computed sheet flow time ....................... > 16.0908 min Messages: Info: Time of concentration rounded to 120.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length ..... .. .. ...... ... .. . 27007.0000 ft watercourse slope . .. .. ... . . .. .. . 0.0825 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 4. 6343 fps computed shallow flow time ..................... > 97.1276 min Messages: Info: Time of concentration rounded to 120.0000 min in row <1>. *************************** Total Time of concentration ......................... > 113.2184 min **************************** Page 1 EX-OS2-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OS2-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OS2, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data : Method Type II on 4.7591 ac 750.0000 min 0.7397 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) EX-OS2 4.7591 72 29. 3971 0.0000 2.0000 support Data: subarea Name: EX-OS2, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .. . ........ .... ...... 300.0000 ft Two Yr, 24 hr Rainfall ....... ... 1.2000 in Land slope ... ................ ... 0.0333 ft/ft computed sheet flow time ....................... > 28.0242 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length . . .... ... . .. .. .. .. . . . 25.0000 ft watercourse slope ... ... ......... 0.0400 ft/ft velocity . . .. ..... ... . .. ......... 3.2269 fps computed shallow flow time ..................... > 0.1291 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Channel Flow Description ..................... Ditch Flow Area....................... 2.0000 ft2 Wetted Perimeter .... .. ........ .. 53.6600 in Flow Length .. . . . ...... .... .... .. 832.0000 ft channel slope . . . .... .. . ... .... .. 0.0504 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius . .. .. . . . .. ... . .. 5.3671 in velocity........................ 11.1490 fps computed channel flow time ..................... > 1.2438 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 1 EX-OS2-25YR.txt *************************** Total Time of concentration ......................... > 29.3971 min **************************** Page 2 EX-OS2-100YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OS2-100YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OS2, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 4.7591 ac 750.0000 min 1. 4639 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) EX-OS2 4.7591 72 29.3971 0.0000 2.4000 Support Data: subarea Name: EX-OS2, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .......... ...... .. ... 300.0000 ft Two Yr, 24 hr Rainfall . . . . . .. .. . 1.2000 in Land slope . .. ....... ... ... . ..... 0.0333 ft/ft computed sheet flow time ....................... > 28.0242 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow Surface . . . . . . . . . . . . . . . . . . . . . . . . . Unpaved Flow Length ..... ... ........ .. .. . 25.0000 ft Watercourse slope ... ... .. .. .. .. . 0.0400 ft/ft velocity........................ 3.2269 fps computed shallow flow time ..................... > 0.1291 min Messages: Info: Time of concentration rounded to 30.0000 min in row <l>. channel Flow Description ..................... Ditch Flow Area....................... 2.0000 ft2 wetted Perimeter ... .. .. .. ....... 53.6600 in Flow Length ...... .. .. .. ... ...... 832.0000 ft channel slope ...... .. .. .. . . .. . .. 0.0504 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0. 0175 Hydraulic radius .. . .... .. .. ... .. 5.3671 in velocity........................ 11.1490 fps computed channel flow time ..................... > 1.2438 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 1 EX-052-lOOYR.txt *************************** Total Time of concentration ......................... > 29.3971 min **************************** Page 2 EX-OS3-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OS3-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OS3, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 12.7121 ac 744.0000 min 5. 2772 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) EX-OS3 12.7121 79 26.1901 0.0000 2.0000 support Data: subarea Name: EX-OS3, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .. ........... ........ 300.0000 ft Two Yr, 24 hr Rainfall . . ........ 1.2000 in Land slope . .. ... ..... .. . ...... .. 0.0667 ft/ft computed sheet flow time ....................... > 21.2256 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... Unpaved Flow Length ..... .... .... .. ... ... 1080.0000 ft watercourse slope . .. .. .. .. . .. . .. 0.0505 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 3. 6258 fps computed shallow flow time ..................... > 4.9645 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. *************************** Total Time of concentration ......................... > 26.1901 min **************************** Page 1 EX-OS3-100YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OS3-100YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OS3, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Fl ow ...................... . Given Input Data: Method Type II on 12.7121 ac 744.0000 min 8.0570 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) EX-OS3 12.7121 79 26.1901 0.0000 2.4000 support Data: subarea Name: EX -OS3, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n .......... ... .. . . . .. . 0.1300 Flow Length ... .. .. . . . . ..... .. ... 300.0000 ft Two Yr, 24 hr Rainfall ..... .. ... 1.2000 in Land slope ........ ... ........ ... 0.0667 ft/ft computed sheet flow time ....................... > 21.2256 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... Unpaved Flow Length . ......... .... ... .. .. 1080.0000 ft watercourse slope . ... ....... .. .. 0.0505 ft/ft velocity . . . . . . . . . ........ .. . .. .. 3.6258 fps computed shallow flow time ..................... > 4.9645 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. *************************** Total Time of concentration ......................... > 26.1901 min **************************** Page 1 EX-OS4-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OS4-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OS4, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 0.7866 ac 732.0000 min 0.4589 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) EX-OS4 0.7866 79 11.4346 0.0000 2.0000 support Data: subarea Name: EX-OS4, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ........ ... .. . ... . .. . 198.0000 ft Two Yr, 24 hr Rainfall .. . ... ... . 1.2000 in Land slope .. ....... ......... ... . 0.1364 ft/ft computed sheet flow time ....................... > 11.4346 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 11.4346 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 EX-OS4-100YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OS4-100YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OS4, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 0.7866 ac 732.0000 min 0.6989 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) EX-OS4 0.7866 79 11.4346 0.0000 2.4000 support Data: subarea Name: EX-OS4, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . O .1300 Flow Length . . . .. .. .. .. . .. .. .. . .. 198.0000 ft Two Yr, 24 hr Rainfall . . . . . ... . . 1.2000 in Land slope ... . .. .. .. .. . .. .. .. . .. 0.1364 ft/ft computed sheet flow time ....................... > 11.4346 min Messages: Info: Time of concentration rounded to 12.0000 min in row <l>. *************************** Total Time of concentration ......................... > 11.4346 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 EX-OS5-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OS5-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OS5, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Ti me ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 7.1042 ac 738.0000 min 1.2532 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) EX-OS.S 7.1042 71 18.3254 0.0000 2.0000 support Data: subarea Name: EX-OS4, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . .... ... ........ ..... 300.0000 ft Two Yr, 24 hr Rainfall . ....... .. 1.2000 in Land slope . ..... ... ....... ... . .. 0.1100 ft/ft computed sheet flow time ....................... > 17.3761 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length .. .... ...... ... ... ... 315.0000 ft Watercourse slope ............... 0.1175 ft/ft Velocity........................ 5.5306 fps Computed shallow flow time ..................... > 0.9493 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 18.3254 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 EX-OS5-100YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OS5-100YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OS5, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 7.1042 ac 738.0000 min 2.5450 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) EX-OSS 7.1042 71 18.3254 0.0000 2.4000 support Data: subarea Name: EX-OS4, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n .. .. . . .. ....... .. .. .. 0.1300 Flow Length . . . . . .. . . . .. . . . .. .. .. 300.0000 ft TWO Yr, 24 hr Rainfall . . . . .... .. 1.2000 in Land slope ... . . . .. . . . .. . . . ...... 0.1100 ft/ft computed sheet flow time ....................... > 17.3761 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length .. .. .. ....... .. .... .. 315.0000 ft watercourse slope . .. ... . .. .... .. 0.1175 ft/ft velocity . .. . . .. .. . . . .. .. . .. . .. .. 5.5306 fps computed shallow flow time ..................... > 0.9493 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 18.3254 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 EX-OS6-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OS6-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OS6, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 152.4295 ac 762.0000 min 37.1887 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) EX-OS6 152.4295 77 45.6076 0.0000 2.0000 support Data: subarea Name: EX-OS6, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length .. . ... ... . ... ... ..... 300.0000 ft Two Yr, 24 hr Rainfall . . . . . . . . . . 1.2000 in Land slope . .. . . ...... ... .. ...... 0.0833 ft/ft computed sheet flow time ....................... > 19.4201 min Messages: .Info: Time of concentration rounded to 45.0000 min in row <1>. Shallow concentrated Flow Description ..................... Shallow SUf'-face . . . . . . . . . . . . . . . . . . . . . . . . . Unpaved Flow Length . . . . . . . ... . . .... .. ... 1980.0000 ft watercourse slope . . . . . . .... .. .. . 0.0061 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 1. 2601 fps computed shallow flow time ..................... > 26.1875 min Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. *************************** Total Time of concentration ......................... > 45.6076 min **************************** Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. Page 1 EX-OS6-100YR.txt LAKE SPRINGS RANCH 3/1/15 EX-OS6-100YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-OS6, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 152.4295 ac 762.0000 min 58.7884 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) EX-OS6 152.4295 77 45.6076 0.0000 2.4000 support Data: subarea Name: EX-OS6, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . ...... .. . .. .. .. . . .. . 300.0000 ft Two Yr, 24 hr Rainfall . .. .. . .... 1.2000 in Land slope .... .... .. . .. .. .. . .... 0.0833 ft/ft computed sheet flow time ....................... > 19.4201 min Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length . .. .... .. . .. ...... .. . 1980.0000 ft Watercourse slope . . . . . .......... 0.0061 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 1. 2601 fps computed shallow flow time ..................... > 26.1875 min Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. *************************** Total Time of concentration ......................... > 45.6076 min **************************** Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. Page 1 EX-1-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-l-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-1, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data : Method Type II on 254.7681 ac 762 .0000 min 31. 0772 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) EX-1 254.7681 72 44.7059 0.0000 2.0000 support Data: subarea Name: EX-1, Row: 1 Sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . .. . .. . . .. .. .. ... . .. . 0.1300 Flow Length ...... .. .... .. .... ... 300.0000 ft Two Yr, 24 hr Rainfall . .. ....... 1.2000 in Land slope .... ... .. .. .. ...... .. . 0.1000 ft/ft computed sheet flow time ....................... > 18.0514 min Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ........ ... ... . . . ... . 5600.0000 ft watercourse slope . . ... .... .. ... . 0.0471 ft/ft velocity........................ 3.5016 fps computed shallow flow time ..................... > 26.6545 min Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. *************************** Total Time of concentration ......................... > 44.7059 min **************************** Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. Page 1 EX-1-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 EX-1-lOOYR TR-55 Tabular Hydrograph Input summary Desc ri pti on .................... . EX-1, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 254.7681 ac 762.0000 min 61. 9851 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) EX-1 254.7681 72 44.7059 0.0000 2.4000 support Data: subarea Name: EX-1, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . ... . . ...... ... . . . . . . 300.0000 ft Two Yr, 24 hr Rainfall . ... . . . . .. 1.2000 in Land slope . . .. . . ....... .. . . . . . .. 0.1000 ft/ft computed sheet flow time ....................... > 18.0514 min Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. Shallow concentrated Flow Description . . . . . . . . . . . . . . . . . . . . . shallow surface ......................... unpaved Flow Length .... ... .... ....... ... 5600.0000 ft Watercourse slope . .. .. ... .. .. .. . 0.0471 ft/ft velocity........................ 3.5016 fps computed shallow flow time ..................... > 26.6545 min Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. *************************** Total Time of concentration ......................... > 44.7059 min **************************** Messages: Info: Time of concentration rounded to 45.0000 min in row <1>. Page 1 EX-2-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-2-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-2, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 5.9181 ac 738.0000 min 0.7395 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) EX-2 5.9181 69 15.1560 0.0000 2.0000 support Data: subarea Name: EX-2, Row: 1 sheet Flow Desc ri pti on . . . . . . . . . . . . . . . . . . . . . sheet Manning's n .... .... .... ... . .. .. . 0.1300 Flow Length ...... .. . ... .... ..... 265.0000 ft Two Yr, 24 hr Rainfall .. .. ...... 1.2000 in Land Slope ...... ..... .. ... .... .. 0.1208 ft/ft Computed sheet flow time ....................... > 15 .1560 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 15.1560 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 EX-2-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 EX-2-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . EX-2, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 5.9181 ac 738.0000 min 1. 6404 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) EX-2 5.9181 69 15.1560 0.0000 2.4000 support Data: subarea Name: EX-2, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . ... . .... .. .. ........ 265.0000 ft Two Yr, 24 hr Rainfall .... ...... 1.2000 in Land slope .. ... ..... ............ 0.1208 ft/ft computed sheet flow time ....................... > 15.1560 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 15.1560 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 EX-3-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-3-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-3, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 10.9278 ac 732.0000 min 1.6799 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) EX-3 10.9278 69 14.1425 0.0000 2.0000 support Data: subarea Name: EX-3, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ... ........ .. ... ... .. 300.0000 ft Two Yr, 24 hr Rainfall .. .. .... .. 1.2000 in Land slope ........ .. .. .... ...... 0.2467 ft/ft computed sheet flow time ....................... > 12.5789 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length .. ... .. .. ..... .. .. ... 530.0000 ft Watercourse Slope .......... .. . .. 0.1226 ft/ft velocity........................ 5.6494 fps computed shallow flow time ..................... > 1.5636 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 14.1425 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 EX-3-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 EX-3-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . EX-3, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Ti me ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 10.9278 ac 732.0000 min 3.6971 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rai nfal 1 Description (min) (in) EX-3 10.9278 69 14.1425 0.0000 2.4000 support Data: subarea Name: EX-3, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . ...... ... ....... .. .. 300.0000 ft Two Yr, 24 hr Rainfall .... .. .. .. 1.2000 in Land slope...................... 0.2467 ft/ft computed sheet flow time ....................... > 12.5789 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ..... .... .... .. ... .. . 530.0000 ft watercourse slope ........ .... .. . 0.1226 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 5. 6494 fps computed shallow flow time ..................... > 1.5636 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 14.1425 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 EX-4-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-4-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-4, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 18.7643 ac 732.0000 min 2.8847 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) EX-4 18.7643 69 14. 5398 0.0000 2.0000 support Data: subarea Name: EX-4, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning' s n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . .... ........ ........ 300.0000 ft Two Yr, 24 hr Rainfall ..... ..... 1.2000 in Land slope .. . . ..... .. .. .... ... . . 0.2533 ft/ft computed sheet flow time ....................... > 12.4468 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Shallow Concentrated Flow Description ..................... shallow surface ......................... Unpaved Flow Length .. . . .. .. . . ... ... . .. .. 660.0000 ft Watercourse Slope .. .. .. .. .. ... .. 0.1061 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 5. 2555 fps computed shallow flow time ..................... > 2.0930 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of Concentration ......................... > 14.5398 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 EX-4-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 EX-4-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . EX-4, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 18.7643 ac 732.0000 min 6.3484 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) EX-4 18.7643 69 14.5398 0.0000 2.4000 support Data: subarea Name: EX-4, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ......... .. ...... ... . 300.0000 ft Two Yr, 24 hr Rainfall ..... ..... 1.2000 in Land slope .......... .. .... ...... 0.2533 ft/ft computed sheet flow time ....................... > 12.4468 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Shallow Concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length . . . . ... .. . . .. ..... .. . 660.0000 ft Watercourse slope . .. . . .. .. . . . ... 0.1061 ft/ft velocity . ... . . . ... .. . ........ ... 5.2555 fps computed shallow flow time ..................... > 2.0930 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 14.5398 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 EX-5-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-5-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-5, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 2.1733 ac 732.0000 min O. 5480 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) EX-5 2.1733 72 14.3677 0.0000 2.0000 support Data: subarea Name: EX-5, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length . . .. .. .. .. .... .. . .... 266.0000 ft Two Yr, 24 hr Rainfall . .. .. . .... 1.2000 in Land slope ... .. . ............ .. .. 0.1391 ft/ft computed sheet flow time ....................... > 14.3677 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 14.3677 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 EX-5-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 EX-5-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . EX-5, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 2.1733 ac 732.0000 min 1.0666 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) EX-5 2.1733 72 14. 3677 0.0000 2.4000 support Data: subarea Name: EX-5, Row: 1 sheet Flow Desc ri pti on . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . O .1300 Flow Length .. .. .. .. .. .. .. .. . . .. . 266.0000 ft Two Yr, 24 hr Rainfall . .. .. . .... 1.2000 in Land slope .. . .... .. .. .. .. .. . . .. . 0.1391 ft/ft computed sheet flow time ....................... > 14.3677 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 14.3677 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 EX-6-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-6-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-6, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 7.3243 ac 738.0000 min 3.5364 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) EX-6 7.3243 79 18.8685 0.0000 2.0000 support Data: subarea Name: EX-6, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length .. . . ...... .. . . ... .... 300.0000 ft Two Yr, 24 hr Rainfall . ...... ... 1.2000 in Land slope .. .. ........ .. .. . . . ... 0.1133 ft/ft Computed sheet flow time ....................... > 17.1719 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length . . . . . .. ... . ... ... .... 675.0000 ft Watercourse slope .... .... ... . ... 0.1689 ft/ft velocity........................ 6.6309 fps Computed shallow flow time ..................... > 1.6966 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of Concentration ......................... > 18.8685 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 EX-6-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 EX-6-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . EX-6, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 7.3243 ac 738.0000 min 5.4190 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) EX-6 7.3243 79 18.8685 0.0000 2.4000 support Data: subarea Name: EX-6, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ........ ... .... ...... 300.0000 ft Two Yr, 24 hr Rainfall .. .... ... . 1.2000 in Land slope . .. ... .. .. . . . .... .. ... 0.1133 ft/ft computed sheet flow time ....................... > 17.1719 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... Unpaved Flow Length . ....... ........ ..... 675.0000 ft Watercourse slope .. ... ........ .. 0.1689 ft/ft Velocity........................ 6.6309 fps computed shallow flow time ..................... > 1.6966 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 18.8685 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 EX-7-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX-7-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-7, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 3.4709 ac 738.0000 min 1. 2391 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) EX-7 3.4709 76 16.2839 0.0000 2.0000 support Data: subarea Name: EX-7, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ......... •R ••·· •••• •• 300.0000 ft Two Yr, 24 hr Rainfall . . . . . . . . . . 1. 2000 in Land slope .. .. .... ... . .... .. . . .. 0.1567 ft/ft computed sheet flow time ....................... > 15.0828 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . Unpaved Flow Length .. . ... .... ...... .. . . . 260.0000 ft watercourse slope .. .. .. .... ..... 0.0500 ft/ft velocity . . .. . ... . ... . .. ... .. . . . . 3.6078 fps computed shallow flow time ..................... > 1.2011 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.2839 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 EX-7-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 EX-7-lOOYR TR-55 Tabular Hydrograph Input summary Desc ri pti on .................... . EX-7, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Ti me ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 3.4709 ac 738.0000 min 2.0409 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) EX-7 3.4709 76 16.2839 0.0000 2.4000 Support Data: subarea Name: EX-7, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length .......... .. .... .. .. . 300.0000 ft Two Yr, 24 hr Rainfall . .... ..... 1.2000 in Land slope . ... ......... ... . .. ... 0.1567 ft/ft computed sheet flow time ....................... > 15.0828 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length . . . . .. . .... .... ...... 260.0000 ft Watercourse slope . . .. . .......... 0.0500 ft/ft velocity........................ 3.6078 fps computed shallow flow time ..................... > 1.2011 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.2839 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 EX-8-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX8-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-8, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 146.8846 ac 756.0000 min 33.0782 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) EX-8 146.8846 75 35.1345 0.0000 support Data: subarea Name: EX-8, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . ... ...... .. . .. 0.1300 Flow Length ..... ... .. .... .. . . ... 300.0000 ft Two Yr, 24 hr Rainfall ... .. .. . . . 1.2000 in Land slope . . . . . . . . . .. ......... .. 0.0467 ft/ft computed sheet flow time ....................... > 24.4784 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Info: Time of Travel rounded to 6.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ...... .. .... .... .. . .. 2945 .0000 ft watercourse slope .. ..... ... ... .. 0.0815 ft/ft Velocity . . . . . . . . . . . . . . . . . . . . . . . . 4 .6061 fps computed shallow flow time ..................... > 10.6561 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Info: Time of Travel rounded to 6.0000 min in row <l>. *************************** Total Time of Concentration ......................... > 35.1345 min **************************** Messages: Info: Time of concentration rounded to 30.0000 min in row <l>. Info: Time of Travel rounded to 6.0000 min in row <1>. Page 1 2.0000 EX-8-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 EX8-100YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-8, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 146.8846 ac 756.0000 min 56.8872 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) EX-8 146.8846 75 35 .1345 0.0000 support Data: subarea Name: EX-8, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . O .1300 Flow Length ........ ... ... . . .. ... 300.0000 ft Two Yr, 24 hr Rainfall .......... 1.2000 in Land slope . . . ...... ........ .. ... 0.0467 ft/ft computed sheet flow time ....................... > 24.4784 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Info: Time of Travel rounded to 6.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length . ............ .. .. ... . 2945.0000 ft Watercourse slope .. .. . . ... ... .. . 0.0815 ft/ft Velocity . . ...... ... ........ .. ... 4.6061 fps computed shallow flow time ..................... > 10.6561 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Info: Time of Travel rounded to 6.0000 min in row <1>. *************************** Total Time of concentration ......................... > 35.1345 min **************************** Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Info: Time of Travel rounded to 6.0000 min in row <1>. Page 1 2.4000 EX-9-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX9-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-9, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 4.6246 ac 750.0000 min 1. 7013 cfs subarea D/S subareas Area CN Tc Tt Rainfall Description (ac) (min) (min) (in) ------------------------------------------------------------------------------- EX-9 4.6246 79 27.1110 0.0000 2.0000 support Data: subarea Name: EX-9, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ... ... . .. ... .... .. . .. 300.0000 ft Two Yr, 24 hr Rainfall . . . .. .. . .. 1.2000 in Land slope .... ... ...... .. .. .. . .. 0.0367 ft/ft computed sheet flow time ....................... > 26.9553 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ....... .. .... ... .. ... 43.0000 ft watercourse slope ... ... ....... .. 0.0814 ft/ft velocity ... . . . . . . . . . . . ... ... . . .. 4.6033 fps computed Shallow flow time ..................... > 0.1557 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. *************************** Total Time of concentration ......................... > 27.1110 min **************************** Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 1 EX-9-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 EX9-100YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-9, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 4.6246 ac 744.0000 min 2.6228 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) EX-9 4.6246 79 27.1110 0.0000 2.4000 support Data: subarea Name: EX-9, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length .. . .... .. ....... .. .. . 300.0000 ft Two Yr, 24 hr Rainfall . .... ..... 1.2000 in Land slope .... ...... .... ... ... . . 0.0367 ft/ft computed sheet flow time ....................... > 26.9553 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length ........ .. . . .. .. . .. .. 43.0000 ft Watercourse slope .. .. .. . . ....... 0.0814 ft/ft Velocity . ..... ..... .... ....... .. 4.6033 fps Computed shallow flow time ..................... > 0.1557 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. *************************** Total Time of concentration ......................... > 27.1110 min **************************** Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 1 EX-10-25YR.txt LAKE SPRINGS RANCH 3/1/15 EX10-25YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-10, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 158.6150 ac 750.0000 min 48.8096 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) EX-10 158.6150 77 30.9376 0.0000 2.0000 support Data: subarea Name: EX-10, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .... .. .. .. .... ... ... . 300.0000 ft Two Yr, 24 hr Rainfall ... ... .... 1.2000 in Land slope .. ...... ........ .. .... 0.0800 ft/ft Computed sheet flow time ....................... > 19.7367 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length . . .. ... . ....... ...... 3035.0000 ft watercourse slope . . .. ........ ... 0.0800 ft/ft Velocity........................ 4.5635 fps computed shallow flow time ..................... > 11.0843 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.0000 ft2 Wetted Perimeter ........ ... ..... 68.0000 in Flow Length .. .. . . . .. .. . .... ..... 177.0000 ft Channel slope . .. . . ...... ... .. .. . 0.1412 ft/ft Manning's n ....... ... .... .. .. .. . 0.0175 Hydraulic radius . .... ...... .. ... 8.4706 in velocity........................ 25.2961 fps Computed channel flow time ..................... > 0.1166 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 1 EX-10-25YR.txt *************************** Total Time of concentration ......................... > 30.9376 min **************************** Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 2 EX-10-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 EX10-100YR TR-55 Tabular Hydrograph Input summary Description .................... . EX-10, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 158.6150 ac 744.0000 min 76.9256 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) EX-10 158.6150 77 30.9376 0.0000 2.4000 support Data: subarea Name: EX-10, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ..... ..... .. .. .. .. .. . 300.0000 ft Two Yr, 24 hr Rainfall ... .. .. .. . 1.2000 in Land slope .. . . . . . . ....... .... ... 0.0800 ft/ft computed sheet flow time ....................... > 19.7367 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length .. . . . . .. .. . ... ....... 3035.0000 ft Watercourse slope ......... ... . . . 0.0800 ft/ft velocity........................ 4.5635 fps computed shallow flow time ..................... > 11.0843 min Messages: Info: Time of concentration rounded to 30.0000 min in row <l>. channel Flow Description ..................... Ditch Flow Area ..... .. ....... ... .. .. .. 4.0000 ft2 wetted Perimeter ........ .. .. .. .. 68.0000 in Flow Length .. ... ... ... . ... .... .. 177.0000 ft channel slope . . . ... .. . . ... ...... 0.1412 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0. 017 5 Hydraulic radius ..... ..... ...... 8.4706 in velocity........................ 25.2961 fps computed channel flow time ..................... > 0.1166 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 1 EX-10-lOOYR.txt *************************** Total Time of concentration ......................... > 30.9376 min **************************** Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 2 PR-l-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR1-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-1, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 113.0274 ac 750.0000 min 23.6009 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rai nfal 1 Description (min) (in) PR-1 113.0274 74 31. 3916 0.0000 2.0000 support Data: subarea Name: PR-1, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .. .. .......... .... ... 300.0000 ft Two Yr, 24 hr Rainfall ... .. .. . .. 1.2000 in Land slope .. ... . ... .. .... .. .. . . . 0.0600 ft/ft computed sheet flow time ....................... > 22.1437 min Messages: Info: Time of concentration rounded to 30.0000 min in row <l>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ....... .. .... .. ... .. . 2630.0000 ft Watercourse slope . . .......... .. . 0.0863 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 4.7398 fps computed shallow flow time ..................... > 9.2479 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. *************************** Total Time of concentration ......................... > 31.3916 min **************************** Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 1 PR-1-lOOYR.txt LAKE SPRINGS RANCH 3/1/115 PR1-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-1, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 113.0274 ac 750.0000 min 43.1019 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-1 113.0274 74 31.3916 0.0000 2.4000 support Data: subarea Name: PR-1, Row: 1 sheet Flow Desc ri pti on . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .. .. .. .... .. .. .. . .... 300.0000 ft Two Yr, 24 hr Rainfall ... .. . .... 1.2000 in Land slope ... .... .... .... .. ..... 0.0600 ft/ft computed sheet flow time ....................... > 22.1437 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ... .. .. .... .. ... . . .. . 2630.0000 ft watercourse slope . .... .... ...... 0.0863 ft/ft velocity........................ 4.7398 fps computed shallow flow time ..................... > 9.2479 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. *************************** Total Time of concentration ......................... > 31.3916 min **************************** Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 1 PR-2-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR2-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-2, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1. 6340 ac 738.0000 min 1.0187 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-2 1.6340 82 16.0007 0.0000 2.0000 support Data: subarea Name: PR-2, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . .. .. ... ............. 0.1300 Flow Length . .. .. ... ............. 220.0000 ft Two Yr, 24 hr Rainfall .. . . ...... 1.2000 in Land slope . . .... .. . ..... .. .. .... 0.0727 ft/ft computed sheet flow time ....................... > 16.0007 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.0007 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-2-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR2-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-2, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1.6340 ac 738.0000 min 1.4970 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rai nfal 1 Description (min) (in) PR-2 1. 6340 82 16.0007 0.0000 2.4000 support Data: subarea Name: PR-2, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n ...... .. .. ...... .. ... 0.1300 Flow Length . . ... ... ...... ....... 220.0000 ft Two Yr, 24 hr Rainfall .. . ....... 1.2000 in Land Slope .. .. .. ... ........ .. ... 0.0727 ft/ft computed sheet flow time ....................... > 16.0007 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.0007 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-3-25YR.txt LAKE SPRINGS RANCH 2/1/15 PR3-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-3, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 3.3982 ac 738.0000 min 1.9496 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-3 3.3982 81 16.2609 0.0000 2.0000 support Data: subarea Name: PR-3, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . Sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ..... ... . .. ...... .. . . 170.0000 ft Two Yr, 24 hr Rainfall .... .... .. 1.2000 in Land slope...................... 0.0467 ft/ft computed sheet flow time ....................... > 15.5398 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Channel Flow Description ..................... Ditch Flow Area .. . .. ... ... . . .... .. .... 4.5000 ft2 Wetted Perimeter ...... .... .. .. .. 80.4000 in Flow Length . . .. .. ... .. .. .. . . ... . 591.0000 ft channel slope . ... .. . . . .. ........ 0.0440 ft/ft Manning's n . .. ........ .... ...... 0.0175 Hydraulic radius ..... .. ... . ... .. 8.0597 in velocity........................ 13.6605 fps computed channel flow time ..................... > 0.7211 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.2609 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-3-lOOYR.txt LA°KE SPRING RANCH 3/1/15 PR3-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-3, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 3.3982 ac 738.0000 min 2.9038 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-3 3.3982 81 16.2609 0.0000 2.4000 support Data: subarea Name: PR-3, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .. .. . . . ....... .... .. . 170.0000 ft Two Yr, 24 hr Rainfall . . . ....... 1.2000 in Land slope . .... ................. 0.0467 ft/ft computed sheet flow time ....................... > 15.5398 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area ....................... 4.5000 ft2 Wetted Perimeter ....... .... .. .. . 80.4000 in Flow Length ............ .... .. .. . 591.0000 ft channel slope . .. . . ... .. . . .. .. .. . 0.0440 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius . . ....... .. .. .. . 8.0597 in velocity ........................ 13.6605 fps computed channel flow time ..................... > 0.7211 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.2609 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-4-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR4-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-4, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data : Method Type II On 0.2462 ac 726.0000 min 0.3455 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rai nfal 1 Description (min) Ci n) PR-4 0.2462 87 6.0000 0.0000 2.0000 support Data: subarea Name: PR-4, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length . .... .. .. .. .. ........ 16.0000 ft Two Yr, 24 hr Rainfall .... .. ... . 1.2000 in Land slope ...... ...... .. .. ...... 0.0940 ft/ft computed sheet flow time ....................... > 1.7736 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area .. ....... ... ... .... ... . 4.5000 ft2 wetted Perimeter .. ...... .. ...... 80.4000 in Flow Length .... ... ...... .. ...... 206.0000 ft channel slope .. . . . ... . .. .. .. .... 0.0390 ft/ft Manning's n . . . .. .. .. . . . .. .. . . . .. 0.0175 Hydraulic radius . . ... ..... ...... 8.0597 in velocity........................ 12.8609 fps computed channel flow time ..................... > 0.2670 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. *************************** Total Time of concentration ......................... > 2.0406 min **************************** Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. Page 1 PR-4-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR4-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-4, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 0.2462 ac 726.0000 min 0.4728 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-4 o. 2462 87 6.0000 0.0000 2.4000 support Data: subarea Name: PR-4, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ..... .. . ... ..... ..... 16.0000 ft Two Yr, 24 hr Rainfall ... ....... 1.2000 in Land slope .... .... .. .. .......... 0.0940 ft/ft computed sheet flow time ....................... > 1.7736 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area....................... 4.5000 ft2 wetted Perimeter .......... ...... 80.4000 in Flow Length . . . .......... .. . ..... 206.0000 ft channel slope . ... ... . . .. .. . . . .. . 0.0390 ft/ft Manning's n ..................... 0.0175 Hydraulic radius ...... .. .. . . . .. . 8.0597 in velocity........................ 12.8609 fps computed channel flow time ..................... > 0.2670 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. *************************** Total Time of concentration ......................... > 2.0406 min **************************** Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. Page 1 PR-5-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR5-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-5 I 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 8.5948 ac 738.0000 min 4.1498 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-5 8.5948 79 15 .0773 0.0000 2.0000 support Data: subarea Name: PR-5, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .. .... .. ....... ... ... 300.0000 ft Two Yr, 24 hr Rainfall . . . . . . . . . . 1.2000 in Land slope ....... .. .... .. . ...... 0.1900 ft/ft computed sheet flow time ....................... > 13.9640 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter . ... .. .... ...... 80.4000 in Flow Length ...... ..... ........ .. 1318.0000 ft Channel Slope . . . ........ ...... .. 0.0918 ft/ft Manning's n .. .. .... ... .. .. .... .. 0.0175 Hydraulic radius ... . . . .. ...... .. 8.0597 in velocity . . . .. .. . .. . .. . .. .. .. .. .. 19.7315 fps computed channel flow time ..................... > 1.1133 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 15.0773 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-5-100YR.txt LAKE SPRINGS RANCH 3/1/15 PR5-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-5, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 8.5948 ac 738.0000 min 6.3590 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-5 8.5948 79 15. 0773 0.0000 2.4000 support Data: subarea Name: PR-5, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . .. .. . . .. ....... .. .. 0.1300 Flow Length . . .... .. .. .... ... .... 300.0000 ft Two Yr, 24 hr Rainfall ... .. . .. .. 1.2000 in Land slope . . .. . ....... ... .. . .... 0.1900 ft/ft computed sheet flow time ....................... > 13.9640 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area....................... 4.5000 ft2 wetted Perimeter . ... .. .. ........ 80.4000 in Flow Length . .......... .......... 1318.0000 ft channel slope .. .. ..... .. ........ 0.0918 ft/ft Manning's n ..................... 0.0175 Hydraulic radius . . . . . ........ .. . 8.0597 in velocity ........................ 19.7315 fps computed channel flow time ..................... > 1.1133 min Messages: Info: Time of concentration rounded to 18.0000 min in row <l>. *************************** Total Time of concentration ......................... > 15.0773 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-6-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR6-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-6, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 10.4031 ac 738.0000 min 6.0258 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-6 10.4031 83 22.0630 0.0000 2.0000 support Data: subarea Name: PR-6 , Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . .. . ... .. . ... .. .. .. . . 300.0000 ft Two Yr, 24 hr Rainfall .. .. .. .. .. 1.2000 in Land slope . ...... .......... ..... 0.0833 ft/ft Computed sheet flow time ....................... > 19.4201 min Messages: Info: Time of concentration rounded to 24.0000 min in row <l>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length . ........ .... ... ..... 606.0000 ft Watercourse slope . . . ..... .. .. .. . 0.0561 ft/ft Velocity .. .. . .. .... .. . . ....... .. 3.8215 fps Computed shallow flow time ..................... > 2.6429 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. *************************** Total Time of concentration ......................... > 22.0630 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-6-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR-6-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . PR-6, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 10.4031 ac 738.0000 min 8.8082 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-6 10.4031 83 22.0630 0.0000 2.4000 support Data: subarea Name: PR-6, Row: 1 sheet Flow Description .. .. . . .. .. . . . . . .. . . .. sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ......... ... .... ... . . 300.0000 ft Two Yr, 24 hr Rainfall ..... ... .. 1.2000 in Land slope ......... ........ ... .. 0.0833 ft/ft computed sheet flow time ....................... > 19.4201 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length .. . .... .. . ..... ...... 606.0000 ft Watercourse Slope . ... . .......... 0.0561 ft/ft Velocity .. . . . . ...... .. . .. . . .. .. . 3.8215 fps computed shallow flow time ..................... > 2.6429 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. *************************** Total Time of Concentration ......................... > 22.0630 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-7-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR-7-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-7, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 3.4856 ac 738.0000 min 0.9591 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rai nfal 1 Description (min) (in) PR-7 3.4856 74 19.0716 0.0000 2.0000 support Data: subarea Name: PR-7, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .... ..... ... .... .. . .. 300.0000 ft Two Yr, 24 hr Rainfall . .... .. . .. 1.2000 in Land slope ..... .. ... ... .... .. . .. 0.0930 ft/ft computed sh e et flow time ....................... > 18.5831 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length . . . . . . .. .. .... ... . ... 115.0000 ft Watercourse slope .. ... . .. .. .. . .. 0.0783 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 4. 5148 fps computed shallow flow time ..................... > 0.4245 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter . . . .. .. . . ..... .. 80.4000 in Flow Length . ....... .. .. . . ....... 50.0000 ft channel slope . .. .. . .. .. ..... .. . . 0.0400 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius ..... .. . . .. ... . . 8.0597 in velocity........................ 13.0247 fps computed channel flow time ..................... > 0.0640 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-7-25YR.txt *************************** Total Time of concentration ......................... > 19.0716 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-7-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR-7-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . PR-7, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Ti me ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 3.4856 ac 738.0000 min 1. 7394 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-7 3.4856 74 19.0716 0.0000 2.4000 support Data: subarea Name: PR-7, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length . ..... .... .... ... .... 300.0000 ft Two Yr, 24 hr Rainfall ...... ... . 1.2000 in Land slope .. . .... .... ........ ... 0.0930 ft/ft computed sheet flow time ....................... > 18.5831 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length .. .... .... ....... .... 115.0000 ft watercourse slope .... ....... .... 0.0783 ft/ft velocity . .. ...... .. .. ....... ... . 4.5148 fps computed shallow flow time ..................... > 0.4245 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter . .. .. .. .. .. . .... 80.4000 in Flow Length . ......... .. .. .. . ... . 50.0000 ft channel slope ..... ... .. ..... .... 0.0400 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0. 017 5 Hydraulic radius .. .. . .. .. .. . ... . 8.0597 in velocity .. .. .. ..... .. .. .. ... .... 13.0247 fps computed channel flow time ..................... > 0.0640 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-7-lOOYR.txt *************************** Total Time of concentration ......................... > 19.0716 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-8-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR8-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-8, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 6.4428 ac 750.0000 min 2.1705 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rai nfal 1 Description (min) (in) PR-8 6.4428 78 29.1880 0.0000 2.0000 support Data: subarea Name: PR-8, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n ....... .... ...... .. .. 0.1300 Flow Length ....... .... .. ... . . . .. 300.0000 ft Two Yr, 24 hr Rainfall .. ... ... . . 1.2000 in Land slope ............ ..... ... .. 0.0330 ft/ft computed Sheet flow time ....................... > 28.1258 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. shallow concentrated Flow Description ..................... Shallow surface ......................... unpaved Flow Length ................... .. 330.0000 ft Watercourse slope ... . ... ... . .. .. 0.1030 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 5. 1781 fps computed shallow flow time ..................... > 1.0622 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. *************************** Total Time of concentration ......................... > 29.1880 min **************************** Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 1 PR-8-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR-8-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . PR-8, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 6.4428 ac 744.0000 min 3.3824 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-8 6.4428 78 29.1880 0.0000 2.4000 support Data: subarea Name: PR-8, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .. ... . ..... ... .. .. .. . 300.0000 ft Two Yr, 24 hr Rainfall ... .. .. ... 1.2000 in Land slope ... ... ......... .... ... 0.0330 ft/ft computed sheet flow time ....................... > 28 .1258 min Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length .. .. . ... .. . . .. .... .. . 330.0000 ft watercourse slope .. ... . .. ....... 0.1030 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 5 .1781 fps computed shallow flow time ..................... > 1.0622 min Messages: Info : Time of concentration rounded to 30.0000 min in row <1>. *************************** Total Time of concentration ......................... > 29.1880 min **************************** Messages: Info: Time of concentration rounded to 30.0000 min in row <1>. Page 1 PR-9-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR-9-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-9, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 4.9026 ac 738.0000 min 0.6126 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rai nfal 1 Description (min) Ci n) PR-9 4.9026 69 18.4443 0.0000 2.0000 support Data: subarea Name: PR-9, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ........ .... .. ....... 300.0000 ft Two Yr, 24 hr Rainfall . .. . .... .. 1.2000 in Land slope . ... .. .. ..... ... .... .. 0.1133 ft/ft computed sheet flow time ....................... > 17.1719 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . Unpaved Flow Length . . .... ..... ..... ... . . 334.0000 ft Watercourse slope . ........ ... . . . 0.0973 ft/ft velocity .. .. . . ... .... .. . ... ... . . 5.0328 fps computed shallow flow time ..................... > 1.1061 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter .......... ...... 80.4000 in Flow Length ... . .. .... .. . .... ... . 140.0000 ft channel slope .... .... .. . .... ... . 0.0464 ft/ft Manning's n . .. .. .. . .. .. .. . . .. .. . 0.0175 Hydraulic radius .. ... . .. .. .. ... . 8.0597 in Velocity........................ 14.0281 fps computed channel flow time ..................... > 0.1663 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-9-25YR.txt *************************** Total Time of concentration ......................... > 18.4443 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-9-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR9-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-9, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 4.9026 ac 738.0000 min 1.3590 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-9 4.9026 69 18.4443 0.0000 2.4000 support Data: subarea Name: PR-9, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .. . . ....... ... ... . ... 300.0000 ft Two Yr, 24 hr Rainfall .. .. ...... 1.2000 in Land slope ... ....... .... .. . ..... 0.1133 ft/ft Computed sheet flow time ....................... > 17.1719 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... Unpaved Flow Length . . ... .... .. ... ....... 334.0000 ft Watercourse slope . .. .. . ... ...... 0.0973 ft/ft Velocity........................ 5.0328 fps Computed shallow flow time ..................... > 1.1061 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area . .. .... ... .... ... .... .. 4.5000 ft2 Wetted Perimeter ... ..... .. ...... 80.4000 in Flow Length . .. .. . . . ....... .... .. 140.0000 ft channel slope ... . .. ... . . .. .... .. 0.0464 ft/ft Manning's n . . . .. .. ...... .. .... .. 0.0175 Hydraulic radius ...... .. .. . ... . . 8.0597 in velocity . . ... . . ...... ...... ... . . 14.0281 fps computed channel flow time ..................... > 0.1663 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-9-lOOYR.txt *************************** Total Time of concentration ......................... > 18.4443 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <l>. Page 2 PR-10-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR-10-25YR TR-55 Tabular Hydrograph Input summary Desc ri pti on .................... . PR-10, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 6.4666 ac 738.0000 min 2.6022 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-10 6.4666 77 18.4878 0.0000 2.0000 support Data: subarea Name: PR-10, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n .. . ....... .. . ... .. ... 0.1300 Flow Length . . . ....... .. .... .. .. . 300.0000 ft Two Yr, 24 hr Rainfall . ..... .. .. 1.2000 in Land slope ............ .......... 0.1100 ft/ft computed sheet flow time ....................... > 17.3761 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length .... ..... ... .. .. .. .. . 346.0000 ft watercourse slope ... ... .... .. .. . 0.1214 ft/ft velocity........................ 5.6217 fps computed shallow flow time ..................... > 1.0258 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area . .. . . . .. ... .. . .... ..... 4.5000 ft2 Wetted Perimeter .... .. . ...... .. . 80.4000 in Flow Length ... ........ ..... ..... 50.0000 ft channel slope . ... ... . . . ... . .. ... 0.0222 ft/ft Manning's n .. .. .. . .. . . .. . . . . . .. . 0.0175 Hydraulic radius .... .. . ... ...... 8.0597 in velocity . . . . . . . . . . . . . . . . . . . . . . . . 9. 7032 fps computed channel flow time ..................... > 0.0859 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-10-25YR.txt *************************** Total Time of concentration ......................... > 18.4878 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-10-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR-10-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . PR-10, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 6.4666 ac 738.0000 min 4.1132 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-10 6.4666 77 18.4878 0.0000 2.4000 support Data: subarea Name: PR-10, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . .. .. .... ...... ...... 0.1300 Flow Length ........ ... .. .. ...... 300.0000 ft Two Yr, 24 hr Rainfall . . . . . . . . . . 1.2000 in Land slope .. ........ .. .. .. .. ... . 0.1100 ft/ft computed sheet flow time ....................... > 17.3761 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length . ....... ... ....... .. . 346.0000 ft Watercourse slope . . ....... ... ... 0.1214 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 5.6217 fps computed shallow flow time ..................... > 1.0258 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 wetted Perimeter . . . ....... .... .. 80.4000 in Flow Length .... .. . . . .. .... ... ... 50.0000 ft channel slope .. .. .. ... .... ...... 0.0222 ft/ft Manning's n . .. . . . .. . . .. .. . . . . . . . 0.0175 Hydraulic radius ...... .. .. ... .. . 8.0597 in velocity . . . . . . . . . . . . . . . . . . . . . . . . 9. 7032 fps computed channel flow time ..................... > 0.0859 min Messages: Info : Time of Concentration rounded to 18.0000 min in row <1>. Page 1 PR-10-lOOYR.txt *************************** Total Time of concentration ......................... > 18.4878 min **************************** Messages: Info : Time of concentration rounded to 18.0000 min in row <l>. Page 2 PR-ll-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR-ll-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-11, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Ti me ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 14.3498 ac 744.0000 min 6.4921 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-11 14.3498 80 22.7089 0.0000 2.0000 support Data: subarea Name: PR-11, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length . .... .. .... .. .. . . .. .. 300.0000 ft Two Yr, 24 hr Rainfall .. .. . . .. .. 1.2000 in Land slope ... . .......... .. . ... .. 0.0733 ft/ft computed sheet flow time ....................... > 20.4394 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Shallow Concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length . .. .... .. . . .. ... ... .. 502.0000 ft Watercourse slope . .. . ... ... .. . .. 0.0717 ft/ft velocity . .. . .. ... ... . . .. ... . .. .. 4.3203 fps computed shallow flow time ..................... > 1.9366 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 wetted Perimeter ........... ... .. 80.4000 in Flow Length .. . ... .. . . . .. ... .. . .. 150.0000 ft channel slope .... .. . . ... ... ... .. 0.0133 ft/ft Manning's n ..................... 0.0175 Hydraulic radius ..... ...... ... .. 8.0597 in velocity .. .. . . . .... .. ...... ... .. 7.5104 fps computed channel flow time ..................... > 0.3329 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-ll-25YR.txt *************************** Total Time of concentration ......................... > 22.7089 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-11-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR-11-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . PR-11, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 14.3498 ac 738.0000 min 9.7743 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-11 14.3498 80 22.7089 0.0000 2.4000 support Data: subarea Name: PR-11, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . . .. .... .. .. .... ..... 300.0000 ft Two Yr, 24 hr Rainfall ... ....... 1.2000 in Land slope .... ....... .... ....... 0.0733 ft/ft computed sheet flow time ....................... > 20.4394 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length ...... .... .. .. ....... 502.0000 ft watercourse slope . ......... ..... 0.0717 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 4. 3203 fps computed shallow flow time ..................... > 1.9366 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter .. . . . .. .. .. ..... 80.4000 in Flow Length ... .. .. . . . ...... ..... 150.0000 ft channel slope ... .. ... .. .. .... ... 0.0133 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius .. .. . ........... 8.0597 in velocity . .. . . . .. .. ... ... . ... . .. . 7.5104 fps computed channel flow time ..................... > 0.3329 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-11-lOOYR.txt *************************** Total Time of concentration ......................... > 22.7089 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-12-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR-12-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-12, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 4.7929 ac 726.0000 min 4.3472 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-12 4.7929 81 6.0000 0.0000 2.0000 support Data: subarea Name: PR-12, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . .. . ... .. . .. .. .. . . .. . 20.0000 ft Two Yr, 24 hr Rainfall . .. .. .. .. . 1.2000 in Land slope .. .. .... .. . .. .. .. . . .. . 0.3000 ft/ft computed sheet flow time ....................... > 1.3329 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 wetted Perimeter . . . ... . . . . . . .. .. 80 .4000 in Flow Length .. ..... ... .... ....... 1783.0000 ft channel slope .. .. . . .. .... ... .... 0.0555 ft/ft Manning's n . .. .. .. . . .. .. . .. . . . .. 0.0175 Hydraulic radius ....... ....... .. 8.0597 in Ve 1 oci ty . . . . . . . . . . . . . . . . . . . . . . . . 15. 3421 fps computed channel flow time ..................... > 1.9369 min Messages: Info: Time of concentration rounded to 6.0000 min in row <l>. *************************** Total Time of concentration ......................... > 3.2698 min **************************** Messages: Info: Time of concentration rounded to 6.0000 min in row <l>. Page 1 PR-12-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR-12-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . PR-12, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 4.7929 ac 726.0000 min 6.3634 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-12 4.7929 81 6.0000 0.0000 2.4000 support Data: subarea Name: PR-12, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n .... .. .. ... .. .. ... .. . 0.1300 Flow Length .... ......... .. ... .. . 20.0000 ft Two Yr, 24 hr Rainfall . . .. ... .. . 1.2000 in Land slope .. .. . . . ..... .. ..... .. . 0.3000 ft/ft computed sheet flow time ....................... > 1.3329 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area . .. .. .. .. .. .. ... . .. .... 4.5000 ft2 Wetted Perimeter .. .... .. . ....... 80.4000 in Flow Length ... .. .. ....... ....... 1783.0000 ft channel slope . . . .. .. ...... .. .... 0.0555 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius . . .. . ... . . .. ... . 8.0597 in Velocity . . . . . . . . . . . . . . . . . . . . . . . . 15. 3421 fps computed channel flow time ..................... > 1.9369 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. *************************** Total Time of concentration ......................... > 3.2698 min **************************** Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. Page 1 PR-13-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR-13-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-13, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 14.0915 ac 744.0000 min 5.3550 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-13 14.0915 78 24.4511 0.0000 2.0000 support Data: subarea Name: PR-13, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ................. .... 300.0000 ft TWO Yr, 24 hr Rainfall . . . . . .. .. . 1.2000 in Land slope .. . . . . . . . . . . . . . . . ..... 0.0633 ft/ft computed sheet flow time ....................... > 21.6745 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length . . .. .. . . .. ..... .. .. .. 731.0000 ft watercourse slope . . ... . . . . ...... 0.1163 ft/ft Velocity . .. ..... ................ 5.5023 fps Computed shallow flow time ..................... > 2.2142 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area . . . .. .. . . . ....... ...... 4.5000 ft2 Wetted Perimeter ... ....... ...... 80.4000 in Flow Length ... .. ... ....... ... ... 635.0000 ft channel slope ... . . . .... .. . ... ... 0.0835 ft/ft Manning's n . . .. . ... .... ... ...... 0.0175 Hydraulic radius . ......... .. .. .. 8.0597 in velocity........................ 18.8184 fps Computed channel flow time ..................... > 0.5624 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-13-25YR.txt *************************** Total Time of concentration ......................... > 24.4511 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-13-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR -13-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . PR-13, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data : Method Type II on 14.0915 ac 744.0000 min 8.2980 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-13 14.0915 78 24.4511 0.0000 2.4000 support Data: subarea Name: PR-13, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . O .1300 Flow Length .. .. ......... ... ..... 300.0000 ft Two Yr, 24 hr Rainfall . . ... ... .. 1.2000 in Land slope . .. .. .. . ...... ... ... .. 0.0633 ft/ft computed she et flow time ....................... > 21.6745 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Shallow Concentrated Flow Description ..................... shallow Surf ace . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length .... .. . ... ... . . . .. .. . 731.0000 ft watercourse slope . ......... .. .. . 0.1163 ft/ft velocity .. . . .. .. .. . . . . .. .. .. .. .. 5.5023 fps computed shallow flow time ..................... > 2.2142 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area .. .. .. .. . . .. ... ... .. .. . 4.5000 ft2 wetted Perimeter . . . .. ... . .. .. .. . 80.4000 in Flow Le ngth .... .. ....... ... .. .. . 635.0000 ft ch a nne l Slope ................... 0.0835 ft/ft Ma nni ng's n ..................... 0.0175 Hydr aul i c r a dius .. .. ..... .. .. .. . 8.0597 in ve l o city ........................ 18.8184 fps computed channel flow time ..................... > 0.5624 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-13-lOOYR.txt *************************** Total Time of concentration ......................... > 24.4511 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-14-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR-14-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-14, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 25.4796 ac 744.0000 min 10.5773 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rai nfal 1 Description (min) (in) PR-14 25.4796 79 24.1730 0.0000 2.0000 support Data: subarea Name: PR-14, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .... .. .. ... .. ...... .. 300.0000 ft Two Yr, 24 hr Rainfall .. .. .. .... 1.2000 in Land Slope .... ........ ........ .. 0.0633 ft/ft computed sheet flow time ....................... > 21.6745 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length . .. . .......... ... ... . 906.0000 ft watercourse slope ........ ....... 0.1545 ft/ft velocity . . . . .. . . . . . . . . . . .... ... . 6.3419 fps computed shallow flow time ..................... > 2.3810 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter ... .. .. .. .. ..... 80.4000 in Flow Length .... .... .. ... . . . .. .. . 75.0000 ft channel slope . ... .... ... . . . ..... 0.0267 ft/ft Manning's n . .. . . .. . . . . .. . . .. .. .. 0.0175 Hydraulic radius . . . . . . . . . . . . . . . . 8. 0597 in velocity........................ 10.6413 fps computed channel flow time ..................... > 0.1175 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-14-25YR.txt *************************** Total Time of concentration ......................... > 24.1730 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-14-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR-15-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . PR-14, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 25.4796 ac 744.0000 min 16.1490 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-14 25.4796 79 24.1730 0.0000 2.4000 Support Data: subarea Name: PR-14, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length . . ....... .. . ... .. . . .. 300.0000 ft Two Yr, 24 hr Rainfall . ..... .... 1.2000 in Land slope...................... 0.0633 ft/ft computed s heet flow time ....................... > 21.6745 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length . . .......... .. .. ... .. 906.0000 ft watercourse slope............... 0.1545 ft/ft velocity........................ 6.3419 fps computed shallow flow time ..................... > 2.3810 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 wetted Perimeter . .. .... ..... .. .. 80.4000 in Flow Le ng th ... ... .. .... ..... .. .. 75.0000 ft ch a nnel s l ope ...... .... .... ... .. 0.0267 ft/ft Ma nni ng 's n . . . .. .. .. .. .. . . . . .. .. 0.0175 Hydraulic r a dius . .... .. ..... .. .. 8.0597 in ve l oc i t y ... . . .... .. ........ ... .. 10.6413 fps computed channel flow time ..................... > 0.1175 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-14-lOOYR.txt *************************** Total Time of concentration ......................... > 24.1730 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-15-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR-15-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-15, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 21. 7402 ac 738.0000 min 11.4550 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-15 21. 7402 80 15.5636 0.0000 2.0000 support Data: subarea Name: PR-15, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . O .1300 Flow Length . . . . . . . . . ... . ........ 300.0000 ft Two Yr, 24 hr Rainfall . . ........ 1.2000 in Land slope . ... . .... ........ ..... 0.2000 ft/ft computed sheet flow time ....................... > 13.6804 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length .. . ....... ....... .. .. 531.0000 ft watercourse slope ... . .. .... .. . .. 0.1240 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 5. 6815 fps computed shallow flow time ..................... > 1.5577 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter .. .. . . .. .. . . .. .. 80.4000 in Flow Length .. . .. ...... .. .. .. .. .. 276.0000 ft channel slope . . . ..... ... ...... .. 0.0471 ft/ft Manning's n . .. .. . . . .. . . . . . . . . .. . O. 0175 Hydraulic radius ... . .... .. .. .. .. 8.0597 in velocity . ... . . . ... . . . . . ... .. .. .. 14.1335 fps computed channel flow time ..................... > 0.3255 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-15-25YR.txt *************************** Total Time of concentration ......................... > 15.5636 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-15-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR15-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-15, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 21.7402 ac 738.0000 min 17.3003 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-15 21. 7402 80 15.5636 0.0000 2.4000 support Data: subarea Name: PR-15, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ................. .. .. 300.0000 ft Two Yr, 24 hr Rainfall ... .... ... 1.2000 in Land slope ... .. ... .. . .... ... . ... 0.2000 ft/ft computed sheet flow time ....................... > 13.6804 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... Unpaved Flow Length .. ........ .... ... .... 531.0000 ft Watercourse slope . ... .. .. .. . .... 0.1240 ft/ft Velocity........................ 5.6815 fps computed shallow flow time ..................... > 1.5577 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter ................ 80.4000 in Flow Length ....... .... .. .. . .. ... 276.0000 ft channel slope ..... .... .... ...... 0.0471 ft/ft Manning's n ..... .. .. . . . .. .... .. . 0.0175 Hydraulic radius .... .. ... .. .. . .. 8.0597 in velocity . . ........ .. .. ..... ... .. 14.1335 fps computed channel flow time ..................... > 0.3255 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-15-lOOYR.txt *************************** Total Time of concentration ......................... > 15.5636 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-16-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR16-25YR TR-55 Tabular Hydrograph Input summary Desc ri pti on .................... . PR-16, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 17.8558 ac 744.0000 min 6.1958 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-16 17.8558 77 21.4322 0.0000 2.0000 Support Data: subarea Name: PR-16, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ... ........... .. .. . .. 300.0000 ft Two Yr, 24 hr Rainfall .......... 1.2000 in Land slope .... ............. .. . .. 0.1000 ft/ft computed sheet flow time ....................... > 18.0514 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow Concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ... ......... ....... .. 1002.0000 ft watercourse slope .. . . ...... .. . .. 0.1218 ft/ft velocity........................ 5.6309 fps computed shallow flow time ..................... > 2.9658 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area .. ... ...... .......... .. 4.5000 ft2 Wetted Perimeter ..... ........... 80.4000 in Flow Length . .. .. ... . . ...... ... .. 264.0000 ft channel slope ... ... .. . ..... ... .. 0.0265 ft/ft Manning's n . . .. .. .. . . .. .. . . . . . .. 0.0175 Hydraulic radius ....... .... .. . .. 8.0597 in velocity .. . ............ .... .. . .. 10.6014 fps computed channel flow time ..................... > 0.4150 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-16-25YR.txt *************************** Total Time of concentration ......................... > 21.4322 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-16-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR-16-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . PR-16, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 17.8558 ac 744.0000 min 9.7511 cfs subarea D/S subareas Area CN Tc Tt Rainfall Description (ac) (min) (min) (in) -------------------------------------------------------------------------------PR-16 17.8558 77 21.4322 0.0000 2.4000 support Data: subarea Name: PR-16, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length . ...... .... .... .. .... 300.0000 ft TWo Yr, 24 hr Rainfall . . . .. .. ... 1.2000 in Land slope .. .... .. . ...... .. .. .. . 0.1000 ft/ft computed sheet flow time ....................... > 18.0514 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Shallow Concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length ..... ... .... .... ..... 1002.0000 ft Watercourse slope .. .... ... .... .. 0.1218 ft/ft velocity .. .. .. . . .. . .. . .. . .. . .. .. 5.6309 fps Computed shallow flow time ..................... > 2.9658 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area .. .. ......... ..... .. ... 4.5000 ft2 Wetted Perimeter . ... ... .... .. .. . 80.4000 in Flow Length .. .... ....... .. . .. .. . 264.0000 ft channel slope .. .. .. ..... .. . .. ... 0.0265 ft/ft Manning's n .. .. .. . .. .. .. . .. . . . .. 0.0175 Hydraulic radius ...... ..... .. ... 8.0597 in Velocity........................ 10.6014 fps computed channel flow time ..................... > 0.4150 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-16-lOOYR.txt *************************** Total Time of concentration ......................... > 21.4322 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-17-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR17-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-17, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 6.8281 ac 744.0000 min 2.8345 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-17 6.8281 79 21.4322 0.0000 2.0000 support Data: subarea Name: PR-17, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ... ... ..... .... ... . .. 300.0000 ft Two Yr, 24 hr Rainfall .......... 1.2000 in Land slope .... ... .... .... ....... 0.1000 ft/ft computed sheet flow time ....................... > 18.0514 min Messages: - Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... Unpaved Flow Length .... ...... ... ... .. . . . 1002.0000 ft Watercourse slope ....... ... ..... 0.1218 ft/ft Ve 1 oci ty . . . . . . . . . . . . . . . . . . . . . . . . 5 . 6309 fps Computed shallow flow time ..................... > 2.9658 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area ..... .. .. .. . . ..... .. .. . 4.5000 ft2 Wetted Perimeter ...... ..... ..... 80.4000 in Flow Length ... ........ ... ..... .. 264.0000 ft channel slope . ........ ..... ..... 0.0265 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0. 017 5 Hydraulic radius ........... .. ... 8.0597 in velocity........................ 10.6014 fps computed channel flow time ..................... > 0.4150 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-17-25YR.txt *************************** Total Time of concentration ......................... > 21.4322 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-17-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR17-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-17, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 6.8281 ac 744.0000 min 2.8345 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-17 6.8281 79 21. 9886 0.0000 2.0000 support Data: subarea Name: PR-17, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0. 1300 Flow Length ................ .. ... 300.0000 ft Two Yr, 24 hr Rainfall . . .. .. .... 1.2000 in Land slope ... ..... ... .. .. . .... .. 0.0767 ft/ft computed sheet flow time ....................... > 20.0721 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... unpaved Flow Length .. . . .. ..... ... . ...... 755.0000 ft Watercourse slope . ... ...... .. .. . 0.1656 ft/ft Velocity . . . . . . . . . . . . . . . . . . . . . .. . 6. 5658 fps computed shallow flow time ..................... > 1.9165 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. *************************** Total Time of Concentration ......................... > 21 .9886 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-17-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR-17-lOOYR TR-55 Tabular Hydrograph Input summary Description .................... . PR-17, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 6.8281 ac 744.0000 min 4.3277 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-17 6.8281 79 21. 9886 0.0000 2.4000 support Data: subarea Name: PR-17, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ........ ....... .... .. 300.0000 ft Two Yr, 24 hr Rainfall ... ....... 1.2000 in Land Slope . .... ...... ..... .. .. .. 0.0767 ft/ft computed sheet flow time ....................... > 20.0721 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ........ ....... ...... 755.0000 ft watercourse slope . . . . . . . .. ...... 0.1656 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 6.5658 fps computed shallow flow time ..................... > 1.9165 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. *************************** Total Time of concentration ......................... > 21.9886 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-18-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR18-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-18, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 2.2161 ac 732.0000 min 1.6588 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-18 2.2161 82 12.7015 0.0000 2.0000 support Data: subarea Name: PR-19, Row: 1 sheet Flow Description ..................... sheet Manning's n . ..... ..... .. .. ... ... 0.1300 Flow Length . . ...... ... .... ... ... 88.0000 ft Two Yr, 24 hr Rainfall ..... .. ... 1.2000 in Land slope . . ..... .. .. . .... ... ... 0.0227 ft/ft computed sheet flow time ....................... > 12.2459 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area ... ... .. . . ... ..... .. .. . 4.5000 ft2 Wetted Perimeter . . . . . ...... ..... 80.4000 in Flow Length .. ...... ........ ..... 370.0000 ft channel slope .... ..... ..... ..... 0.0432 ft/ft Manning's n ..................... 0.0175 Hydraulic radius . . ... . ..... ..... 8.0597 in velocity .. .. .. .. .. . .. . .. . .. .. .. . 13. 5357 fps computed channel flow time ..................... > 0.4556 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 12.7015 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 PR-18-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR18-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-18, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 2.2161 ac 732.0000 min 2.4262 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rai nfal 1 Description (min) Ci n) PR-18 2.2161 82 12.7015 0.0000 2.4000 support Data: subarea Name: PR-18, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length .. ....... ... ... . ..... 88.0000 ft Two Yr, 24 hr Rainfall . ......... 1.2000 in Land slope ............. ....... .. 0.0227 ft/ft computed sheet flow time ....................... > 12.2459 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter ...... ........ .. 80.4000 in Flow Length ........ ... .... .... .. 370.0000 ft channel slope ..... .... ... .. ..... 0.0432 ft/ft Manning's n ........... ..... ..... 0.0175 Hydraulic radius . . . . .. . .. .. ..... 8.0597 in Velocity . . . . . . . . . . . . . . . . . . . . . . . . 13.5357 fps Computed channel flow time ..................... > 0.4556 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of Concentration ......................... > 12.7015 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 PR-19-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR19-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-19, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 4.3939 ac 744.0000 min 1. 9879 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-19 4.3939 80 21. 8948 0.0000 2.0000 support Data: subarea Name: PR-19, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length .. . ... ..... ...... ... . 300.0000 ft Two Yr, 24 hr Rainfall . . . . . . . . . . 1.2000 in Land slope ............. ..... ... . 0.0733 ft/ft computed sheet flow time ....................... > 20.4394 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length . . ... ....... .... .. .. . 123.0000 ft watercourse slope .... .. .... ..... 0.1138 ft/ft Velocity ........................ 5.4429 fps Computed shallow flow time ..................... > 0.3766 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area ... ... . ... .. ....... .. .. 4.5000 ft2 Wetted Perimeter . . ... . ........ .. 80.4000 in Flow Length . .... ... .. . ... ....... 365.0000 ft channel slope . . . ... .. . . .. ... .. .. 0.0265 ft/ft Manning's n .... .... .. . ....... ... 0.0329 Hydraulic radius ... . ...... .... .. 8.0597 in velocity........................ 5.6390 fps computed channel flow time ..................... > 1.0788 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-19-25YR.txt *************************** Total Time of concentration ......................... > 21.8948 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-19-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR19-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-19, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Ti me ...................... . Peak Flow ...................... . Given Input Data : Method Type II on 4.3939 ac 738.0000 min 2.9929 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-19 4.3939 80 21. 8948 0.0000 2.4000 support Data: subarea Name: PR-17, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . O .1300 Flow Length . . . . ... . .. .. .. ... . ... 300.0000 ft Two Yr, 24 hr Rainfall ... .. . . ... 1.2000 in Land slope ..... ...... .. .. .... .. . 0.0733 ft/ft computed sheet flow time ....................... > 20.4394 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface ......................... Unpaved Flow Length . . .. ....... ... . . . . . .. 123.0000 ft Watercourse slope .. ... .... ... ... 0.1138 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 5. 4429 fps computed shallow flow time ..................... > 0.3766 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Fl ow Area . . . . . . . . . . . . . . . . . . . . . . . 4. 5000 ft2 Wetted Perimeter ... ... ..... .. ... 80.4000 in Flow Length .. ...... ... .. .. ... ... 365.0000 ft channel slope . . ... . ... ..... .. ... 0.0265 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . O. 0329 Hydraulic radius . ..... ..... .. ... 8.0597 in velocity........................ 5.6390 fps computed channel flow time ..................... > 1.0788 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-19-lOOYR.txt *************************** Total Time of concentration ......................... > 21.8948 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-20-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR20-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-20, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 5.5987 ac 744.0000 min 1. 9427 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-20 5.5987 77 22.3875 0.0000 2.0000 support Data: subarea Name: PR-18, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n .. . .. ....... ..... .... 0.1300 Flow Length .. ... . ... ... .. .. ..... 300.0000 ft TWo Yr, 24 hr Rainfall ... .. ..... 1.2000 in Land slope ... ... .... .. . .... ..... 0.0633 ft/ft computed sheet flow time ....................... > 21.6745 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow Surf ace . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length .. . . . . . .. .. . .. .. .. . .. 100.0000 ft watercourse slope . .. .. . .. .. . . ... 0.1100 ft/ft velocity .. . . .. .. .. . .. .. . .. .. . .. . 5.3512 fps computed shallow flow time ..................... > 0.3115 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area ....... ....... ....... .. 4.5000 ft2 Wetted Perimeter . ... . . . ..... .. .. 80.4000 in Flow Length .. .. . .... .. . .. .. . .. .. 309.0000 ft channel slope ....... .. . .... ... .. 0.0388 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius ... . .. . .. .. .. . .. 8.0597 in velocity........................ 12.8279 fps computed channel flow time ..................... > 0.4015 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-20-25YR.txt *************************** Total Time of concentration ......................... > 22.3875 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-20-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR20-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-20, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 5.5987 ac 744.0000 min 3.0575 cfs subarea D/S subareas Area CN Tc Tt Rainfall Description (ac) (min) (min) (in) -------------------------------------------------------------------------------PR-20 5.5987 77 22.3875 0.0000 2.4000 support Data: subarea Name: PR-20, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ....... ... ... ... ... . . 300.0000 ft Two Yr, 24 hr Rainfall ... .. ..... 1.2000 in Land slope ......... .. .... .. .. .. . 0.0633 ft/ft computed sheet flow time ....................... > 21.6745 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow Surface . . . . . . . . . . . . . . . . . . . . . . . . . Unpaved Flow Length . . .... .. ... ... . ...... 100.0000 ft Watercourse Slope ............... 0.1100 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 5. 3512 fps computed shallow flow time ..................... > 0.3115 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter ... .... ......... 80.4000 in Flow Length . . ... .. . .. .. .. . ...... 309 .0000 ft channel slope ... .. . .. .. .. ....... 0 .0388 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius ... .... ... .... .. 8.0597 in Velocity........................ 12.8279 fps computed channel flow time ..................... > 0.4015 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-20-lOOYR.txt *************************** Total Time of concentration ......................... > 22.3875 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-21-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR21-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-21, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1. 6369 ac 738.0000 min 0.2444 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-21 1. 6369 70 15.6234 0.0000 2.0000 support Data: subarea Name: PR-21, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ........... .. . ... . . . . 280.0000 ft Two Yr, 24 hr Rainfall ... ... .. .. 1.2000 in Land slope .. ..... .... .... ... .. .. 0.1250 ft/ft computed sheet flow time ....................... > 15.6234 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 15.6234 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-21-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR21-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-21, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1. 6369 ac 738.0000 min 0.5175 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-21 1.6369 70 15.6234 0.0000 2.4000 support Data: subarea Name: PR-21, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . O .1300 Fl ow Length . . . . . . . . . . . . . . . . . . . . . 280. 0000 ft Two Yr, 24 hr Rainfall . .... .. . .. 1.2000 in Land slope . ... ...... .......... .. 0.1250 ft/ft computed sheet flow time ....................... > 15.6234 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 15.6234 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-22-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR22-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-22, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 11. 3726 ac 738.0000 min 5.0196 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-22 11. 3726 78 17.2935 0.0000 2.0000 Support Data: subarea Name: PR-22, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length . .... .. .. ... .. .. ..... 300.0000 ft Two Yr, 24 hr Rainfall . .... ... .. 1.2000 in Land slope ...................... 0.1500 ft/ft computed sheet flow time ....................... > 15.3488 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ..... .. .. . . . .. .. . .. .. 200.0000 ft watercourse slope . ... .. .. .. . .. .. 0.0400 ft/ft velocity........................ 3.2269 fps computed shallow flow time ..................... > 1.0330 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter ... ..... .... .... 80.4000 in Flow Length ..... .. . .. .. ......... 791.0000 ft channel slope ... ... . . .. .... ..... 0.0493 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius ....... .... ... .. 8.0597 in velocity . .......... ..... ...... .. 14.4598 fps computed channel flow time ..................... > 0.9117 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-22-25YR.txt *************************** Total Time of concentration ......................... > 17.2935 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-22-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR22-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-22, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 11. 3726 ac 738.0000 min 7.8092 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-22 11.3726 78 17.2935 0.0000 2.4000 support Data: subarea Name: PR-22, Row: 1 sheet Flow Description ..................... sheet Manning's n . ...... ..... .. . ... .. . 0.1300 Flow Length . .. .. .. .. ... .. .... .. . 300.0000 ft Two Yr, 24 hr Rainfall . .... ..... 1.2000 in Land slope ........ .. ... ... . ..... 0.1500 ft/ft computed sheet flow time ....................... > 15.3488 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length .. ..... .... .. .. .... .. 200.0000 ft watercourse slope ......... .... .. 0.0400 ft/ft velocity . . . . . . . . . . . . . . . . . . . .. . . . 3.2269 fps computed shallow flow time ..................... > 1.0330 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area . .... .. . ..... ..... ... . . 4.5000 ft2 Wetted Perimeter .. ............ .. 80.4000 in Flow Length ............... ...... 791.0000 ft channel slope ... . ..... .... ...... 0.0493 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius .......... .... .. 8.0597 in velocity . . . . . . . . . . . . . . . . . . . . . . . . 14.4598 fps computed channel flow time ..................... > 0.9117 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-22-lOOYR. txt *************************** Total Time of concentration ......................... > 17.2935 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-23-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR23-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-23, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 9.7614 ac 744.0000 min 1.4567 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-23 9.7614 71 26.4578 0.0000 2.0000 support Data: subarea Name: PR-23, Row: 1 sheet Flow Description ..................... sheet Manning's n ... . ...... .. ..... ... . 0.1300 Flow Length .. .. ........ ......... 300.0000 ft Two Yr, 24 hr Rainfall . . . . .. . . . . 1.2000 in Land slope . . .. ...... .. ..... .. ... 0.0467 ft/ft Computed sheet flow time ....................... > 24.4784 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . Unpaved Flow Length ....... .. . .... .. . .. .. 139.0000 ft Watercourse slope ... . . ... .. . .... 0.0432 ft/ft velocity .. .. . .. .. .. . .. .. .. .. .. .. 3. 3535 fps Computed shallow flow time ..................... > 0.6908 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter . . . . . ...... .. . .. 80.4000 in Flow Length . . .. .. . . ........ ... .. 1222.0000 ft channel slope .. ......... ...... .. 0.0589 ft/ft Manning's n ..................... 0.0175 Hydraulic radius .... .. ... ..... .. 8.0597 in Velocity........................ 15.8051 fps computed channel flow time ..................... > 1.2886 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-23-25YR.txt *************************** Total Time of concentration ......................... > 26.4578 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. Page 2 PR-23-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR23-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-23, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 9.7614 ac 744.0000 min 2.9981 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-23 9.7614 71 26.4578 0.0000 2.4000 support Data: subarea Name: PR-23, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ............. .. ...... 300.0000 ft Two Yr, 24 hr Rainfall .. .. ...... 1.2000 in Land slope ............ ..... ..... 0.0467 ft/ft computed sheet flow time ....................... > 24.4784 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length . . .. .. . . . .. ... ....... 139.0000 ft watercourse slope . ...... ........ 0.0432 ft/ft Velocity .. . .. . .. .. .. .. .. . .. .. .. . 3.3535 fps computed shallow flow time ..................... > 0.6908 min Messages: Info: Time of concentration rounded to 24.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area ... .... ... .. .. . .. . ... . . 4.5000 ft2 Wetted Perimeter . . . ....... ...... 80.4000 in Flow Length ..... .. . ..... .. .... .. 1222.0000 ft channel slope ...... .. .. ... .... .. 0.0589 ft/ft Manning's n . . . . . .. .. .. . .. .. .. .. . 0.0175 Hydraulic radius ... ....... ...... 8.0597 in velocity .... ....... .... ... . .. ... 15.8051 fps computed channel flow time ..................... > 1.2886 min Messages: Info : Time of concentration rounded to 24.0000 min in row <1>. Page 1 PR-23-lOOYR.txt *************************** Total Time of concentration ......................... > 26.4578 min **************************** Messages: Info: Time of concentration rounded to 24.0000 min in row <l>. Page 2 PR-24-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR24-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-24, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 2.0850 ac 738.0000 min 0.5737 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-24 2.0850 74 16.2920 0.0000 2.0000 support Data: subarea Name: PR-24, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . .. .. ... ............. 0.1300 Flow Length . ....... ......... .... 300.0000 ft Two Yr, 24 hr Rainfall . ...... ... 1.2000 in Land slope .. ..... .. .... .... ..... 0.1467 ft/ft computed sheet flow time ....................... > 15.4860 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . Unpaved Flow Length . . ....... ... . . . .... .. 50.0000 ft Watercourse slope .. . ... ... ... . .. 0.1400 ft/ft Velocity........................ 6.0370 fps computed shallow flow time ..................... > 0.1380 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter .. ... ........ ... 80.4000 in Flow Length .. . .... ... .... .... ... 602.0000 ft channel slope . .. . .... .... .... .. . 0.0532 ft/ft Manning's n ... ... .. .. ... . ... .... 0.0175 Hydraulic radius ... .. ... ........ 8.0597 in Ve 1 oci ty . . . . . . . . . . . . . . . . . . . . . . . . 15 . 0209 fps computed channel flow time ..................... > 0.6680 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-24-25YR.txt *************************** Total Time of concentration ......................... > 16.2920 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-24-lOOYR.txt LAKE SPRING RANCH 3/1/15 PR24-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-24, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 2.0850 ac 738.0000 min 1.0404 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-24 2.0850 74 16.2920 0.0000 2.4000 Support Data: subarea Name: PR-24, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . . . ... .... ..... ...... 300.0000 ft Two Yr, 24 hr Rainfall .... ...... 1.2000 in Land slope .... .................. 0.1467 ft/ft computed sheet flow time ....................... > 15.4860 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Shallow Concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ..... .. ... . .. ... .. ... 50.0000 ft watercourse slope . ......... .. ... 0.1400 ft/ft velocity .. .. .. .. .. .. . .. .. .. . .. . . 6.0370 fps computed shallow flow time ..................... > 0.1380 min Messages: Info: Time of concentration rounded to 18 .0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 wetted Perimeter .. . .. .. .. ... ... . 80.4000 in Flow Length .......... ..... .. ... . 602.0000 ft channel slope . ....... ....... ... . 0.0532 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius .. .. . .. .. ... ... . 8.0597 in Ve 1 oci ty . . . . . . . . . . . . . . . . . . . . . . . . 15. 0209 fps computed channel flow time ..................... > 0.6680 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-24-lOOYR.txt *************************** Total Time of concentration ......................... > 16.2920 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-25-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR25-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-25, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Ti me ...................... . Peak Fl ow ...................... . Given Input Data : Method Type II on 13. 9490 ac 738.0000 min 1.4388 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-25 13 .9490 68 17.1626 0.0000 2.0000 support Data: subarea Name: PR-25, Row: 1 sheet Flow Description ..................... sheet Manning's n ....... ....... .. ..... 0.1300 Flow Length . .. .... ... . ..... ..... 300.0000 ft Two Yr, 24 hr Rainfall . . . . . . . . . . 1.2000 in Land slope . . . ..... ... ........ ... 0.1833 ft/ft computed sheet flow time ....................... > 14.1659 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length . . ... .. . . . .. ....... .. 805.0000 ft Watercourse slope . . ........ ..... 0.0770 ft/ft velocity . . . . . . . . . . . . . . . . . . . . . . . . 4.4771 fps computed shallow flow time ..................... > 2.9967 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 17.1626 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-25-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR25-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-25, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 13.9490 ac 738.0000 min 3.3654 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rai nfal 1 Description (min) Ci n) PR-25 13 .9490 68 17.1626 0.0000 2.4000 support Data: subarea Name: PR-25, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . . . .. .... ... .. .. .. . .. 300.0000 ft Two Yr, 24 hr Rainfall ..... ..... 1.2000 in Land slope . ........ ........ ..... 0.1833 ft/ft Computed sheet flow time ....................... > 14.1659 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Shallow Concentrated Flow Description ..................... shallow Surface . . . . . . . . . . . . . . . . . . . . . . . . . Unpaved Flow Length .. .... ............. .. 805.0000 ft Watercourse slope .. ........ ... .. 0.0770 ft/ft Velocity . .. . .. ...... ... . ... ... . . 4.4771 fps computed shallow flow time ..................... > 2.9967 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 17.1626 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-26-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR26-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-26, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1.0478 ac 726.0000 min 0.7476 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-26 1.0478 78 6.0000 0.0000 2.0000 Support Data: subarea Name: PR-26, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ... . ...... .... .. ... .. 80.0000 ft Two Yr, 24 hr Rainfall ... .. ..... 1.2000 in Land slope ....... .... .... .. ..... 0.3750 ft/ft computed sheet flow time ....................... > 3.6955 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter ... .. .. .... ..... 80.4000 in Flow Length . ... ..... .. ... .. . . . .. 835.0000 ft channel slope .. .. .. . . . ... ..... .. 0.0719 ft/ft Manning's n ..................... 0.0175 Hydraulic radius . . . . . .. .... ... .. 8.0597 in velocity........................ 17.4624 fps computed channel flow time ..................... > 0.7970 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. *************************** Total Time of concentration ......................... > 4.4925 min **************************** Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. Page 1 PR-26-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR26-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-26, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 1.0478 ac 726.0000 min 1.1377 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-26 1. 0478 78 6.0000 0.0000 2.4000 support Data: subarea Name: PR-26, Row: 1 sheet Flow Description ..................... sheet Manni ng's n ............. .. ... . .. 0.1300 Flow Le ngt h . . . ..... .. .. . . . .. . . .. 80.0000 ft Two Yr, 24 hr Rainfall .. .. .... .. 1.2000 in Land s lo pe ... . .... ...... ........ 0 .3750 ft/ft compu ted s heet flow time ....................... > 3.6955 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. channel Flow Desc ri pti on . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area . ... . . . . ... .. . .... .. . . . 4.5000 ft2 Wetted Perimeter . ...... .. .. .. . .. 80.4000 in Flow Length . . . .. . ...... ....... .. 835.0000 ft channel slope . ....... ..... .. .. . . 0.0719 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0. 017 5 Hydraulic radius ... .. . . . ........ 8.0597 in velocity........................ 17.4624 fps Computed channel flow time ..................... > 0.7970 min Messages: Info : Time of concentration rounded to 6.0000 min in row <1>. *************************** Total Time of Concentration ......................... > 4.4925 min **************************** Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. Page 1 PR-27-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR27-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-27, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 12.3697 ac 732.0000 min 1.9016 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-27 12.3697 69 14.7032 0.0000 2.0000 support Data: subarea Name: PR-27, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n .. . . . ..... ... ........ 0.1300 Flow Length ..... ... .. ... ........ 300.0000 ft Two Yr, 24 hr Rainfall ... .. .. ... 1.2000 in Land slope .. .... ......... .... ... 0.1800 ft/ft computed sheet flow time ....................... > 14.2693 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow Surface . . . . . . . . . . . . . . . . . . . . . . . . . Unpaved Flow Length . . .. . .. ... . ........ .. 212.0000 ft watercourse slope ... .......... .. 0.2547 ft/ft Velocity........................ 8.1427 fps Computed shallow flow time ..................... > 0.4339 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 14.7032 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 PR-27-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR27-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-27, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 12.3697 ac 732.0000 min 4.1850 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-27 12.3697 69 14.7032 0.0000 2.4000 support Data: subarea Name: PR-27, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . ....... .... .... ..... 300.0000 ft Two Yr, 24 hr Rainfall . . . .. .. ... 1.2000 in Land slope ....... .. ...... .... ... 0.1800 ft/ft computed Sheet flow time ....................... > 14.2693 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length . . .............. ..... 212.0000 ft watercourse slope .... ........ ... 0.2547 ft/ft velocity . . ... . . . . .... .. . . .. .. ... 8.1427 fps computed shallow flow time ..................... > 0.4339 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 14.7032 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 PR-28-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR28-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-28, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 16.1193 ac 738.0000 min 4.4354 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-28 16.1193 74 17.8804 0.0000 2.0000 support Data: subarea Name: PR-28, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n .. . ...... .. ...... .. . . 0.1300 Flow Length ....... .. .. ..... .. .. . 300.0000 ft Two Yr, 24 hr Rai nfal 1 . . . . . . . . . . 1. 2000 in Land slope ........... .... .. . . .. . 0.1267 ft/ft computed sheet flow time ....................... > 16.4210 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length ........... ..... .. .. . 331.0000 ft watercourse slope ...... .... ..... 0.0906 ft/ft velocity . . . . . . . . . . . . ... . . ... . . . . 4.8565 fps computed shallow flow time ..................... > 1.1359 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area . . . .... ... ..... ........ 4.5000 ft2 . wetted Perimeter . .. ... ....... .. . 80.4000 in Flow Length .. ... . .. ..... ... .. ... 260.0000 ft channel slope ... . ..... .......... 0.0423 ft/ft Manning's n .... .. . ..... ......... 0.0175 Hydraulic radius .. .. .. . . . ..... .. 8.0597 in velocity........................ 13.3940 fps computed Channel flow time ..................... > 0 .3235 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-28-25YR.txt *************************** Total Time of concentration ......................... > 17.8804 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-28-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR28-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-28, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 16.1193 ac 738.0000 min 8.0438 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-28 16.1193 74 17.8804 0.0000 2.4000 support Data: subarea Name: PR-28, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ............ ......... 300.0000 ft Two Yr, 24 hr Rainfall .. . ....... 1.2000 in Land slope ............ .... .... .. 0.1267 ft/ft computed sheet flow time ....................... > 16.4210 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. shallow concentrated Flow Description ..................... shallow surface . . . . . . . . . . . . . . . . . . . . . . . . . unpaved Flow Length . . ..... .. ....... ..... 331.0000 ft Watercourse slope ..... .. .. . ..... 0.0906 ft/ft Velocity . .. ... . . ...... ...... ... . 4.8565 fps computed shallow flow time ..................... > 1.1359 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter . ... ...... .. .... 80.4000 in Flow Length . . .... .. . ...... .. .... 260.0000 ft channel slope ....... ............ 0.0423 ft/ft Manning's n . ...... .... .. ........ 0.0175 Hydraulic radius ........... ..... 8.0597 in Velocity........................ 13.3940 fps Computed channel flow time ..................... > 0.3235 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-28-lOOYR.txt *************************** Total Time of concentration ......................... > 17.8804 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 2 PR-29-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR29-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-29, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 5.2776 ac 738.0000 min 0.7881 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-29 support Data: subarea Name: PR-29, Row: 1 I sheet Flow 5. 2776 Description ..................... sheet 70 Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 16. 7291 Flow Length .. . . . .... .... ........ 200.0000 ft Two Yr, 24 hr Rainfall ...... ... . 1.2000 in 0.0000 Land slope . . ....... ...... .. . ... . 0.0600 ft/ft computed sheet flow time ....................... > 16.0095 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area....................... 4.5000 ft2 wetted Perimeter ........ .. .. .. .. 80.4000 in Flow Length . ..... ..... .. .. . . .. .. 605.0000 ft channel slope .... ....... ... ..... 0.0463 ft/ft Manning's n ..................... 0.0175 Hydraulic radius . . . . . . . . . . . . . . . . 8. 0597 in velocity ... ... .............. .. .. 14.0130 fps computed channel flow time ..................... > 0.7196 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.7291 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 2.0000 PR-29-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR29-100YR TR-55 Tabular Hydrograph Input summary Desc ri pti on .................... . PR-29, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 5. 2776 ac 738.0000 min 1. 6685 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-29 5. 2776 70 16.7291 0.0000 2.4000 support Data: subarea Name: PR-29, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n .... ............ .. ... 0.1300 Flow Length ............ .... .. ... 200.0000 ft Two Yr, 24 hr Rainfall . . . . . . . . . . 1. 2000 in Land slope ..... .. .. .... .. . . .. ... 0.0600 ft/ft computed sheet flow time ....................... > 16.0095 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. channel Flow Description . . . . . . . . . . . . . . . . . . . . . Ditch Flow Area ... .... ... ............. 4.5000 ft2 wetted Perimeter . . . . ............ 80.4000 in Flow Length . ....... ....... ... ... 605.0000 ft channel slope . .. ... ........ ..... 0.0463 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius ... ....... ... .. . 8.0597 in velocity . .. . ....... .......... ... 14.0130 fps computed channel flow time ..................... > 0.7196 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.7291 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-30-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR30-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-30, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 1. 0133 ac 726.0000 min 0.8501 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-30 1. 0133 80 6.0000 0.0000 2.0000 support Data: subarea Name: PR-30, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n .... .... ....... ...... 0.1300 Flow Length . . ...... ........ .. ... 60.0000 ft Two Yr, 24 hr Rainfall ..... ... . . 1.2000 in Land slope . .. ... .. .. .. .......... 0.3667 ft/ft computed sheet flow time ....................... > 2.9622 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 Wetted Perimeter .. .... .... ...... 80.4000 in Flow Length .. . .................. 486.0000 ft channel slope . . ...... ........ .. . 0.0535 ft/ft Manning's n ..................... 0.0175 Hydraulic radius . . . . . . . . . . . . . . . . 8. 0597 in Velocity........................ 15.0632 fps Computed channel flow time ..................... > 0.5377 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. *************************** Total Time of Concentration ......................... > 3.4999 min **************************** Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. Page 1 PR-30-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR30-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-30, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1. 0133 ac 726.0000 min 1. 2599 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) (in) PR-30 1. 0133 80 6.0000 0.0000 2.4000 support Data: subarea Name: PR-30, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . .. .. . ... .... ... ... .. 60.0000 ft Two Yr, 24 hr Rai nfal 1 . . . . . . . . . . 1. 2000 in Land slope .. .. .......... .. .... .. 0.3667 ft/ft computed sheet flow time ....................... > 2.9622 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. channel Flow Description ..................... Ditch Flow Area....................... 4.5000 ft2 wetted Perimeter ...... .. .. .... .. 80.4000 in Flow Length ... .... ...... .. .... .. 486.0000 ft channel slope . .......... .. .... .. 0.0535 ft/ft Manning's n ..................... 0.0175 Hydraulic radius ... ....... ...... 8.0597 in velocity . . . . . . . . . . . . . . . . . . . . . . . . 15.0632 fps computed channel flow time ..................... > 0.5377 min Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. *************************** Total Time of concentration ......................... > 3.4999 min **************************** Messages: Info: Time of concentration rounded to 6.0000 min in row <1>. Page 1 PR-31-25YR.txt LAKE SPRING RANCH 3/1/15 PR31-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-31, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1. 2525 ac 738.0000 min 0.1565 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-31 1. 2525 69 18.4096 0.0000 2.0000 support Data: subarea Name: PR-31, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length ..................... 275.0000 ft Two Yr, 24 hr Rainfall ..... ..... 1.2000 in Land slope .... ... ............... 0.0800 ft/ft computed sheet flow time ....................... > 18.4096 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 18.4096 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-31-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR31-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-31, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1. 2525 ac 738.0000 min O. 3472 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-31 1. 2525 69 18.4096 0.0000 2.4000 Support Data: subarea Name: PR-31, Row: 1 sheet Flow Desc ri pti on . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . .... .. . ........ .. ... 0.1300 Flow Length . .... .. . ........ .. ... 275.0000 ft Two Yr, 24 hr Rainfall ..... ..... 1.2000 in Land slope...................... 0.0800 ft/ft computed sheet flow time ....................... > 18.4096 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 18.4096 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-32-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR32-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-32, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 0.8678 ac 738.0000 min 0.1790 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-32 0.8678 72 16.2534 0.0000 2.0000 support Data: subarea Name: PR-31, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ......... .. .. .. .... .. 184.0000 ft Two Yr, 24 hr Rainfall . . . . . . . . . . 1. 2000 in Land slope ................. ... .. 0.0489 ft/ft computed sheet flow time ....................... > 16.2534 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.2534 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-32-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR32-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-32, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 0.8678 ac 738.0000 min 0.3502 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-32 0.8678 72 16.2534 0.0000 2.4000 support Data: subarea Name: PR-32, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0.1300 Flow Length .. ... .. ...... ..... ... 184.0000 ft Two Yr, 24 hr Rainfall .... ... .. . 1.2000 in Land slope ... .. . ....... ...... .. . 0.0489 ft/ft computed sheet flow time ....................... > 16.2534 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.2534 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-33-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR33-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-33, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1. 0330 ac 738.0000 min 0.6440 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-33 1.0330 82 16.4717 0.0000 2.0000 support Data: subarea Name: PR-33, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n ... .......... .. .. .. . . 0.1300 Flow Length ... ... ......... .. ... . 230.0000 ft Two Yr, 24 hr Rainfall .. .. . ..... 1.2000 in Land slope ..... ....... .. ... ..... 0.0739 ft/ft computed sheet flow time ....................... > 16.4717 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.4717 min **************************** Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-33-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR33-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-33, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1. 0330 ac 738.0000 min 0.9464 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-33 1.0330 82 16.4717 0.0000 2.4000 support Data: subarea Name: PR-33, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length ... ........ .... .... .. 230.0000 ft Two Yr, 24 hr Rainfall . . . . . . . . . . 1.2000 in Land slope .. .. ...... ...... .... .. 0.0739 ft/ft computed sheet flow time ....................... > 16.4717 min Messages: Info: Time of concentration rounded to 18.0000 min in row <1>. *************************** Total Time of concentration ......................... > 16.4717 min **************************** Messages : Info: Time of concentration rounded to 18.0000 min in row <1>. Page 1 PR-34-25YR.txt LAKE SPRINGS RANCH 3/1/15 PR34-25YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-34, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 1. 5293 ac 732.0000 min 1. 0556 cfs subarea D/S subareas Area (ac) CN Tc (min) Tt Rainfall Description (min) Ci n) PR-34 1. 5293 81 13. 9443 0.0000 2.0000 support Data: subarea Name: PR-34, Row: 1 sheet Flow Description ..................... sheet Manning's n . . . . . . . . . . . . . . . . . . . . . 0 .1300 Flow Length . ......... ...... .. . . . 162.0000 ft TWo Yr, 24 hr Rainfall . . ........ 1.2000 in Land slope .... .. ........ ........ 0.0556 ft/ft Computed sheet flow time ....................... > 13.9443 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 13.9443 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 PR-34-lOOYR.txt LAKE SPRINGS RANCH 3/1/15 PR34-100YR TR-55 Tabular Hydrograph Input summary Description .................... . PR-34, 100 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II On 1. 5293 ac 732.0000 min 1. 5641 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) (in) PR-34 1. 5293 81 13.9443 0.0000 2.4000 support Data: subarea Name: PR-34, Row: 1 sheet Flow Description . . . . . . . . . . . . . . . . . . . . . sheet Manning's n . .... .. ...... .... .. .. 0.1300 Flow Length ...... ....... .... .... 162.0000 ft Two Yr, 24 hr Rainfall .. .... .. .. 1.2000 in Land slope . ...... .. ....... .. .. .. 0.0556 ft/ft computed sheet flow time ....................... > 13.9443 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. *************************** Total Time of concentration ......................... > 13.9443 min **************************** Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Page 1 EX-OSl 25YR COMBINED FLOW.txt LAKE SPRINGS RANCH 3/15/15 EXISTING 25YR TO EX-OSl TR-55 Tabular Hydrograph Method Input summary Description .................... . EX -OSl, 25 YR COMBINED EXISTING Rainfall Distribution ........... Type II Ia/P Interpolation .............. on Total Area ...................... 2314.6489 ac Peak Time ....................... 816.0000 min Peak Flow ....................... 234.7439 cfs Given Input Data: subarea D/S subareas Description EX-OSl EX-2 EX-3 EX-4 EX-5 EX-OSl EX-OSl EX-OSl EX-OSl Area (ac) 2276.8654 5.9181 10.9278 18.7643 2.1733 Page 1 CN Tc (min) 75 113.2184 69 15.1560 69 14.1425 69 14.5398 72 14. 3677 Tt Rai nfal 1 (min) Ci n) 97.1276 0.0000 1. 5636 2.0930 0.0000 2.0000 2.0000 2.0000 2.0000 2.0000 EX-OSl 100YR COMBINED FLOW.txt LAKE SPRINGS RANCH 3/1/15 EXISTING 25YR TO EX-OSl TR-55 Tabular Hydrograph Method Input summary Description .................... . EX-OSl, 100 YR COMBINED EXISTING Rainfall Distribution ........... Type II Ia/P Interpolation .............. on Total Area ...................... 2314.6489 ac Peak Time ....................... 816.0000 min Peak Flow ....................... 400.6614 cfs Given Input Data: subarea D/S subareas Description EX-OSl EX-2 EX-3 EX-4 EX-5 EX -051 EX -051 EX -051 EX -051 Area (ac) 2276.8654 5.9181 10.9278 18.7643 2.1733 Page 1 CN TC (min) 75 113. 2184 69 15.1560 69 14.1425 69 14.5398 72 14. 3677 Tt Rainfall (min) Ci n) 97.1276 0 .0000 1.5636 2.0930 0.0000 2.4000 2.4000 2.4000 2.4000 2.4000 PROPOSED EX-051 25YR COMBINED FLOW.txt LAKE SPRINGS RANCH 3/15/15 PROPOSED 25YR TO EX-OSl TR-55 Tabular Hydrograph Method Input summary Description .................... . EX-OSl, 25 YR COMBINED PROPOSED Rainfall Distribution ........... Type II Ia/P Interpolation .............. on Total Area ...................... 2312.3644 ac Peak Time ...................... . Peak Flow ...................... . Given Input Data: subarea D/S subareas Area Description (ac) 816.0000 min 234.2330 cfs CN TC (min) Tt Rainfall (min) (in) ------------------------------------------------------------------------------- EX-OSl 2276.8654 75 113. 2184 97.1276 2.0000 PR-31 EX-OSl 1. 2525 69 18.4096 0.0000 2.0000 PR-30 PR-31 1. 0133 80 6.0000 0. 5377 2.0000 PR-29 PR-30 5. 2776 70 16. 7291 0.7196 2.0000 PR-27 EX-OSl 12 .3697 69 14.7032 0.4339 2.0000 PR -25 EX-OSl 13 .9490 68 17.1626 2.9967 2.0000 PR-21 EX-OSl 1. 6369 70 15.6234 0.0000 2.0000 Page 1 PROPOSED EX-OSl 100YR COMBINED FLOW.txt LAKE SPRINGS RANCH 3/15/15 PROPOSED 100YR TO EX-OSl TR-55 Tabular Hydrograph Method Input summary Description .................... . EX-OSl, 100 YR COMBINED PROPOSED Rainfall Distribution ........... Type II Ia/P Interpolation .............. on Total Area ...................... 2312.3644 ac Peak Time ....................... 816.0000 min Peak Flow ....................... 399.5297 cfs Given Input Data: subarea D/S subareas Description Area (ac) CN Tc (min) EX-OSl 2276.8654 75 113. 2184 PR-31 EX-OSl 1. 2525 69 18.4096 PR-30 PR-31 1. 0133 80 6.0000 PR-29 PR-30 5. 2776 70 16.7291 PR-27 EX-OSl 12.3697 69 14.7032 PR-25 EX-OSl 13. 9490 68 17.1626 PR-21 EX-OSl 1.6369 70 15.6234 Page 1 Tt Rainfall (min) Ci n) 97.1276 2.4000 0.0000 2.4000 o. 5377 2.4000 0.7196 2.4000 0.4339 2.4000 2.9967 2.4000 0.0000 2.4000 EX-1 25YR COMBINED FLOW.txt LAKE SPRINGS RANCH 3/15/15 EXISTING 25YR TO EX-1 TR-55 Tabular Hydrograph Input summary Description .................... . EX-1, 25 YR COMBINED EXISTING Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: subarea D/S subareas Description EX-1 EX-OS6 EX-1 EX-8 EX-1 EX-10 EX-OS6 EX-OS5 EX-OS6 EX-OS4 EX-OS5 EX-6 EX-OS5 EX-Osle EX-OS6 EX-OS2 EX-10 EX-OS3 EX-8 Area (ac) 254.7681 152.4295 146.8846 158.6150 1. 2532 0.7866 7.3243 2314. 6489 4.7591 12. 7121 Method Type II On 3054.1814 ac 840.0000 min 265.9759 cfs CN 72 77 75 77 71 79 79 Tc (min) 44.7059 45.6075 35.1345 30.9376 18.3254 11.4346 18.8685 75 113. 2184 72 29.3941 79 26.1901 Page 1 Tt Rainfall (min) Ci n) 26.6545 2.0000 26.1875 2.0000 10.6561 2.0000 11.2009 2.0000 0.9493 2.0000 0.0000 2.0000 1.6966 2.0000 97.1276 2.0000 1. 3729 2.0000 4.9645 2.0000 EX-1 100YR COMBINED FLOW.txt LAKE SPRINGS RANCH 3/15/15 EXISTING 100YR TO EX-1 TR-55 Tabular Hydrograph Input summary Description .................... . EX-1, 100 YR COMBINED EXISTING Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: subarea D/S subareas Description EX-1 EX-OS6 EX-1 EX-8 EX-1 EX-10 EX-OS6 EX-OS5 EX-OS6 EX-OS4 EX-OS5 EX-6 EX-OS5 EX-OSlC EX-OS6 EX-OS2 EX-10 EX-OS3 EX-8 Area (ac) 254.7681 152.4295 146.8846 158.6150 1. 2532 0.7866 7.3243 2314. 6489 4.7591 12.7121 Method Type II on 3054.1814 ac 828.0000 min 443.0485 cfs CN 72 77 75 77 71 79 79 Tc (min) 44.7059 45.6075 35.1345 30.9376 18.3254 11.4346 18.8685 75 113. 2184 72 29.3941 79 26.1901 Page 1 Tt Rainfall (min) Ci n) 26.6545 2.4000 26.1875 2.4000 10.6561 2.4000 11. 2009 2.4000 0.9493 2.4000 0.0000 2.4000 1.6966 2.4000 97.1276 2.4000 1. 3729 2.4000 4.9645 2.4000 EX-1 25YR COMBINED FLOW.txt LAKE SPRING RANCH 3/15/15 PROPOSED 25YR TO EX-1 TR-55 Tabular Hydrograph Method Description Input summary ..................... EX-1, 25 YR COMBINED PROPOSED Rainfall Distribution ........... Type II Ia/P Interpolation .............. On Total Area ...................... 3056.2748 ac Peak Time ....................... 840.0000 min Peak Flow ....................... 261. 5791 cfs Given Input Data: -------------------------------------------------------------------------------- subarea D/S subareas Area CN Tc Tt Rainfall Description (ac) (min) (min) (in) ------------------------------------------------------------------------------- EX-1 254.7681 72 44.7059 26.6545 2.0000 EX-OS6 EX-1 152.4295 77 45.6076 26.1875 2.0000 EX-Osle EX-OS6 2312. 3644 75 113. 2184 97.1276 2.0000 EX-OS5 EX-OS6 1. 2532 71 18.3254 0.9493 2.0000 EX-OS4 EX-OS5 0.7866 79 11. 4346 0.0000 2.0000 PR-17 EX-OS5 6.8281 79 21.4322 3.3808 2.0000 PR-1 EX-1 113.0274 74 31. 3916 9.2479 2.0000 EX-OS3 PR-1 12.7121 79 26.1901 4.9450 2.0000 PR-2 PR-1 1.6340 82 16.0007 0.0000 2.0000 PR-3 PR-2 3.3982 81 16.2609 0.7211 2.0000 PR-6 EX-1 10.4031 83 22.0630 2.6429 2.0000 PR-7 PR-6 3 .4856 74 19.0716 0.4885 2.0000 PR-9 PR-7 4.9026 69 18.4443 1. 2724 2.0000 PR-8 EX-OS6 6.4428 78 29.1880 1.0622 2.0000 PR-16 PR-8 17.8558 77 21.4322 3.3808 2.0000 PR-18 PR-16 2.2161 82 12.7015 0.4556 2.0000 PR-20 PR-18 5.5987 77 22.3875 0. 7130 2.0000 PR-15 PR-8 21. 7402 80 15.5636 1.8832 2.0000 PR-19 PR-15 4.3939 80 21. 8948 1. 4554 2.0000 PR-23 PR-19 9.7614 71 26.4578 1.9794 2.0000 PR-24 PR-23 2 .0850 74 16.2920 0.8060 2.0000 PR-26 PR-24 1. 0478 78 6.0000 0.7970 2.0000 PR-22 PR-15 11. 3726 78 17.2935 1. 9447 2.0000 PR-14 PR-15 25.4796 79 24.1730 2.4985 2.0000 PR-5 PR-8 8.5948 79 15. 0773 1.1133 2.0000 PR-4 PR-5 0.2462 87 6.0000 0.2670 2.0000 PR-13 PR-15 14.0915 78 24.4511 2. 7766 2.0000 PR-12 PR-13 4.7929 81 6.0000 1. 9369 2.0000 PR-28 PR-12 16.1193 74 17.8804 1. 4594 2.0000 PR-11 PR-13 14.3498 80 22.7089 2.2695 2.0000 PR-10 PR-11 6.4666 77 18.4878 1.1117 2.0000 EX-OS2 PR-11 4.7591 72 29.3971 1. 3729 2.0000 PR-32 EX-OS2 0.8678 72 16.2534 0.0000 2.0000 Page 1 PROPOSED EX-1 100YR COMBINED FLOW.txt LAKE SPRINGS RANCH 3/15/15 PROPOSED 100YR TO EX-1 TR-55 Tabular Hydrograph Method Description Input summary ..................... EX-1, 100 YR COMBINED PROPOSED Rainfall Distribution ........... Type II Ia/P Interpolation .............. on Total Area ......... " ............. 3056.2748 ac Peak Time ....................... 840.0000 min Peak Flow ....................... 436.0482 cfs Given Input Data: ------------------------------------------------------------------------------- subarea D/S subareas Area CN Tc Tt Rainfall Description (ac) (min) (min) Ci n) -------------------------------------------------------------------------------- EX-1 254.7681 72 44.7059 26.6545 2.4000 EX-OS6 EX-1 152.4295 77 45.6076 26.1875 2.4000 EX-Osle EX-OS6 2312. 3644 75 113.2184 97.1276 2.4000 EX-OS5 EX-OS6 1. 2532 71 18.3254 0.9493 2.4000 EX-OS4 EX-OS5 0.7866 79 11.4346 0.0000 2.4000 PR-17 EX-OS5 6.8281 79 21.4322 3.3808 2.4000 PR-1 EX-1 113.0274 74 31. 3916 9.2479 2.4000 EX-OS3 PR-1 12.7121 79 26.1901 4.9450 2.4000 PR-2 PR-1 1.6340 82 16.0007 0.0000 2.4000 PR-3 PR-2 3.3982 81 16. 2609 0.7211 2.4000 PR-6 EX-1 10.4031 83 22.0630 2.6429 2.4000 PR-7 PR-6 3.4856 74 19.0716 0.4885 2.4000 PR-9 PR-7 4.9026 69 18.4443 1. 2724 2.4000 PR-8 EX-OS6 6.4428 78 29.1880 1.0622 2.4000 PR-16 PR-8 17.8558 77 21. 4322 3.3808 2.4000 PR-18 PR-16 2.2161 82 12.7015 0.4556 2.4000 PR-20 PR-18 5.5987 77 22. 3875 0. 7130 2.4000 PR-15 PR-8 21. 7402 80 15.5636 1. 8832 2.4000 PR-19 PR-15 4.3939 80 21. 8948 1.4554 2.4000 PR-23 PR-19 9.7614 71 26.4578 1.9794 2.4000 PR-24 PR-23 2.0850 74 16.2920 0.8060 2.4000 PR-26 PR-24 1. 0478 78 6.0000 0.7970 2.4000 PR-22 PR-15 11. 3726 78 17.2935 1. 9447 2.4000 PR-14 PR-15 25.4796 79 24.1730 2.4985 2.4000 PR-5 PR-8 8.5948 79 15 .0773 1.1133 2.4000 PR-4 PR-5 0.2462 87 6.0000 0.2670 2.4000 PR-13 PR-15 14.0915 78 24.4511 2. 7766 2.4000 PR-12 PR-13 4.7929 81 6.0000 1.9369 2.4000 PR-28 PR-12 16.1193 74 17.8804 1.4594 2.4000 PR-11 PR-13 14.3498 80 22. 7089 2.2695 2.4000 PR-10 PR-11 6.4666 77 18.4878 1.1117 2.4000 EX-OS2 PR-11 4.7591 72 29. 3971 1. 3729 2.4000 PR-32 EX-OS2 0.8678 72 16.2534 0.0000 2.4000 Page 1 LAKE SPRINGS RANCH 3/15/15 PR-3~-34 25YR COMBINED FLOW.txt PROPOSED 25YR TO PR-33 TR-55 Tabular Hydrograph Input summary Description .................... . PR-33-34 COMBINED, 25 YR Rainfall Distribution .......... . Ia/P Interpolation ............. . Total Area ..................... . Peak Time ...................... . Peak Flow ...................... . Given Input Data: Method Type II on 2.5623 ac 732.0000 min 1.6689 cfs subarea D/S subareas Area (ac) CN TC (min) Tt Rainfall Description (min) Ci n) PR-34 PR-33 channel Flow PR-33 1.5293 1. 0330 81 82 Description ..................... CHANNEL 13.9443 16.4717 Flow Area....................... 4.5000 ft2 Wetted Perimeter ........ .. ...... 80.4000 in Flow Length . . .. ..... .... ........ 211.0000 ft channel slope ...... ..... .. .... .. 0.0420 ft/ft Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0175 Hydraulic radius .... .... .. . . . ... 8.0597 in Velocity ... .. .... ... .... .. . . ... . 13.3464 fps 0.2635 0.0000 computed channel flow time ..................... > 0.2635 min Messages: Info: Time of concentration rounded to 12.0000 min in row <1>. Info: Time of concentration rounded to 18.0000 min in row <2>. ******************** Total Time of Travel ................................ > 0.2635 min ********************* Messages: Info: Time of concentration rounded to 12.0000 min in row <l>. Info: Time of concentration rounded to 18.0000 min in row <2>. Page 1 2.0000 2.0000