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Home My WebLink AboutSWA000179_Design Calculations_20230103colee 2701 E. Camelback Rd. Phoenix, AZ 85016 602-795-4111 Cole & Associates, Inc. is a Missouri Corporation d.b.a. Cole Design Group, Inc. in Arizona and Texas, herein referred to as "Cole" PERMANENT POOL VOLUME Elevation Height Area Volume Incremental Cumulative Incremental Cumulative (ft) (ft) (ft') (ft') (ft') (ac-ft) I (ac-ft) 420.00 5267 1.00 5885 5885 0.14 0.14 421.00 6526 1.00 7174 13059 0.16 0.30 422.00 7841 1.00 8518 21577 0.20 0.50 423.00 9214 1.00 9920 31497 0.23 0.72 424.00 10642 0.90 10239 41736 0.24 0.96 424.90 12128 STORAGE VOLUME PROVIDED Elevation Height Area Volume Incremental Cumulative Incremental Cumulative (ft) (ft) (ft') (ft') (ft') (ac-ft) I (ac-ft) 424.90 12128 0.10 1543 1543 0.04 0.04 425.00 18993 1.00 21208 22751 0.49 0.52 426.00 23504 DRAINAGE AREA IMPERVIOUS AREA IMPERVIOUS PERCENT Rv Rd Dv POND DESIGN VOLUME 14.66 AC 4.37 AC 30 0.318 1 inch 16938 CF RUNOFF COEFFICIENT DESIGN DEPTH DESIGN VOLUME FOR DRAWDOWN TIME MAIN POOL SURFACE AREA AND VOLUME HRT METHOD HRT DAYS REQUIRED HYDRAULIC RESIDENCE TIME Ts DAYS AVERAGE TIME BETWEEN STORMS Vmp 412601CF MAIN POOL VOLUME FOREBAY VOLUMES PROPOSED FOREBAY 8354 CF FOREBAY VOLUME % E20% DESIGN VOLUME DRAW DOWN TIME NORMAL POOL EL 424.9 NEXT AVAILABLE OUTLET 426 STORAGE DEPTH 1.1 STORAGE VOLUME PROVIDED 22751 CF DRIVING HEAD 0.366667 Do 2.5 IN Ao 0.034 SF CID 0.6 Q 0.OAp CFS DRAW DOWN TIME 2.65 DAYS MUST BE GREATER THAN Dv STORAGE DEPTH/3 ORIFICE DIAMETER ORIFICE AREA DISCHARGE COEFFICIENT AVERAGE FLOW THROUGH ORIFICE DRAW DOWN TIME Hy d raf I ow Table of Contents 22-0193_Youngsville Academy_Detention Design_2022-12-05.gpw Hydraflow Hydrographs Extension for Autodeskg Civil 3DO by Autodesk, Inc. v2022 Tuesday, 12 / 6 / 2022 Watershed Model Schematic...................................................................................... 1 Hydrograph Return Period Recap............................................................................. 2 1 -Year SummaryReport......................................................................................................................... 3 HydrographReports................................................................................................................... 4 Hydrograph No. 3, Reservoir, Proposed Basin........................................................................ 4 PondReport - Wet Basin..................................................................................................... 5 10 -Year SummaryReport......................................................................................................................... 7 HydrographReports................................................................................................................... 8 Hydrograph No. 3, Reservoir, Proposed Basin........................................................................ 8 100 - Year SummaryReport......................................................................................................................... 9 HydrographReports................................................................................................................. 10 Hydrograph No. 3, Reservoir, Proposed Basin...................................................................... 10 OFReport.................................................................................................................. 11 Watershed Model Schematic 1 Hydraflow Hydrographs Extension for Autodesk@ Civil 3D@ by Autodesk, Inc. v2022 Leaend Hid. Origin Description 1 SCS Runoff Existing Site 2 SCS Runoff Proposed Site 3 Reservoir Proposed Basin 4 SCS Runoff Existing Site 2 5 SCS Runoff Existing Site 3 7 SCS Runoff Proposed Site 2 8 SCS Runoff Proposed Site 3 9 SCS Runoff Proposed Site 4 Project: 22-0193 Youngsville Academy_Detention Design_2022-12-05.gpw Tuesday, 12 / 6 / 2022 Hydrograph Return Period Recap draflow Hydrographs Extension for Autodesk@ Civil 3D@ by Autodesk, Inc. v2022 Hyd. Hydrograph Inflow Peak Outflow (cfs) Hydrograph No. type hyd(s) Description (origin) 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr 1 SCS Runoff ------ 2.688 ------- ------- ------- 12.02 ------- ------- 25.36 Existing Site 2 SCS Runoff ------ 13.43 ------- ------- ------- 43.90 ------- ------- 84.01 Proposed Site 3 Reservoir 2 0.453 ------- ------- ------- 6.325 ------- ------- 41.97 Proposed Basin 4 SCS Runoff ------ 1.779 ------- ------- ------- 10.54 ------- ------- 23.78 Existing Site 2 5 SCS Runoff ------ 1.193 ------- ------- ------- 4.609 ------- ------- 9.306 Existing Site 3 7 SCS Runoff ------ 0.596 ------- ------- ------- 2.268 ------- ------- 4.560 Proposed Site 2 8 SCS Runoff ------ 0.835 ------- ------- ------- 2.616 ------- ------- 4.906 Proposed Site 3 9 SCS Runoff ------ 1.366 ------- ------- ------- 5.390 ------- ------- 10.96 Proposed Site 4 Proj. file: 22-0193_Youngsville Academy_Detention Design_2022-12-05.gpw Tuesday, 12 / 6 / 2022 Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk@ Civil 3DO by Autodesk, Inc. v2022 Hyd. No. Hydrograph type (origin) Peak flow (cfs) Time interval (min) Time to Peak (min) Hyd. volume (cuft) Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph Description 1 SCS Runoff 2.688 1 741 17,601 ------ ------ ------ Existing Site 2 SCS Runoff 13.43 1 723 39,255 ------ ------ ------ Proposed Site 3 Reservoir 0.453 1 1048 27,302 2 426.12 78,520 Proposed Basin 4 SCS Runoff 1.779 1 730 9,594 ------ ------ ------ Existing Site 2 5 SCS Runoff 1.193 1 728 4,734 ------ ------ ------ Existing Site 3 7 SCS Runoff 0.596 1 725 2,089 ------ ------ ------ Proposed Site 2 8 SCS Runoff 0.835 1 718 1,740 ------ ------ ------ Proposed Site 3 9 SCS Runoff 1.366 1 724 4,374 ------ ------ ------ Proposed Site 4 22-0193_Youngsville Academy_Detention D sRgYtU01Rd09.r Tuesday, 12 / 6 / 2022 4 Hydrograph Report Hydraflow Hydrographs Extension for AUtodeskS Civil 3DO by Autodesk, Inc. v2022 Tuesday, 12 / 6 / 2022 Hyd. No. 3 Proposed Basin Hydrograph type = Reservoir Peak discharge = 0.453 cfs Storm frequency = 1 yrs Time to peak = 1048 min Time interval = 1 min Hyd. volume = 27,302 cuft Inflow hyd. No. = 2 - Proposed Site Max. Elevation = 426.12 ft Reservoir name = Wet Basin Max. Storage = 78,520 cuft Storage Indication method used. Wet pond routing start elevation = 424.90 ft. Q (cfs) 14.00 12.00 10.00 M .UR 4.00 2.00 Proposed Basin Hyd. No. 3 -- 1 Year Q (cfs) 14.00 12.00 10.00 4.00 2.00 0.00 300 600 900 1200 1500 1800 2100 2400 2700 3000 Time (min) Hyd No. 3 Hyd No. 2 ® Total storage used = 78,520 cult Pond Report s Hydraflow Hydrographs Extension for Autodesk@ Civil 3D@ by Autodesk, Inc. v2022 Tuesday, 12 / 6 / 2022 Pond No. 1 - Wet Basin Pond Data Contours -User-defined contour areas. Conic method used for volume calculation. Begining Elevation = 420.00 ft Stage / Storage Table Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (cuft) Total storage (cuft) 0.00 420.00 5,267 0 0 1.00 421.00 6,526 5,885 5,885 2.00 422.00 9,731 8,075 13,959 3.00 423.00 11,923 10,807 24,767 4.00 424.00 14,294 13,089 37,856 5.00 425.00 18,993 16,586 54,442 6.00 426.00 23,504 21,206 75,649 7.00 427.00 25,845 24,663 100,311 8.00 428.00 28,243 27,032 127,344 9.00 429.00 30,697 29,459 156,802 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrFRsr] [A] [B] [C] [D] Rise (in) = 24.00 2.50 8.00 0.00 Crest Len (ft) = 16.00 0.00 0.00 0.00 Span (in) = 24.00 2.50 24.00 0.00 Crest El. (ft) = 427.50 0.00 0.00 0.00 No. Barrels = 1 1 1 0 WeirCoeff. = 3.33 3.33 3.33 3.33 Invert El. (ft) = 422.40 424.90 426.00 0.00 Weir Type = 1 --- --- --- Length (ft) = 61.80 0.00 0.00 0.00 Multi -Stage = Yes No No No Slope (%) = 1.00 0.00 0.00 n/a N-Value = .013 .013 .013 n/a Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(in/hr) = 0.000 (by Contour) Multi -Stage = n/a Yes No No TW Elev. (ft) = 0.00 Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s). Stage / Storage / Discharge Table Stage Storage Elevation CIvA CIvB CIvC PrfRsr WrA WrB WrC WrD Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 420.00 0.00 0.00 0.00 --- 0.00 --- --- --- 0.10 588 420.10 0.00 0.00 0.00 --- 0.00 --- --- --- 0.20 1,177 420.20 0.00 0.00 0.00 --- 0.00 --- --- --- 0.30 1,765 420.30 0.00 0.00 0.00 --- 0.00 --- --- --- 0.40 2,354 420.40 0.00 0.00 0.00 --- 0.00 --- --- --- 0.50 2,942 420.50 0.00 0.00 0.00 --- 0.00 --- --- --- 0.60 3,531 420.60 0.00 0.00 0.00 --- 0.00 --- --- --- 0.70 4,119 420.70 0.00 0.00 0.00 --- 0.00 --- --- --- 0.80 4,708 420.80 0.00 0.00 0.00 --- 0.00 --- --- --- 0.90 5,296 420.90 0.00 0.00 0.00 --- 0.00 --- --- --- 1.00 5,885 421.00 0.00 0.00 0.00 --- 0.00 --- --- --- 1.10 6,692 421.10 0.00 0.00 0.00 --- 0.00 --- --- --- 1.20 7,500 421.20 0.00 0.00 0.00 --- 0.00 --- --- --- 1.30 8,307 421.30 0.00 0.00 0.00 --- 0.00 --- --- --- 1.40 9,114 421.40 0.00 0.00 0.00 --- 0.00 --- --- --- 1.50 9,922 421.50 0.00 0.00 0.00 --- 0.00 --- --- --- 1.60 10,729 421.60 0.00 0.00 0.00 --- 0.00 --- --- --- 1.70 11,537 421.70 0.00 0.00 0.00 --- 0.00 --- --- --- 1.80 12,344 421.80 0.00 0.00 0.00 --- 0.00 --- --- --- 1.90 13,152 421.90 0.00 0.00 0.00 --- 0.00 --- --- --- 2.00 13,959 422.00 0.00 0.00 0.00 --- 0.00 --- --- --- 2.10 15,040 422.10 0.00 0.00 0.00 --- 0.00 --- --- --- 2.20 16,121 422.20 0.00 0.00 0.00 --- 0.00 --- --- --- 2.30 17,201 422.30 0.00 0.00 0.00 --- 0.00 --- --- --- 2.40 18,282 422.40 0.00 0.00 0.00 --- 0.00 --- --- --- 2.50 19,363 422.50 0.00 0.00 0.00 --- 0.00 --- --- --- 2.60 20,444 422.60 0.00 0.00 0.00 --- 0.00 --- --- --- 2.70 21,524 422.70 0.00 0.00 0.00 --- 0.00 --- --- --- 2.80 22,605 422.80 0.00 0.00 0.00 --- 0.00 --- --- --- 2.90 23,686 422.90 0.00 0.00 0.00 --- 0.00 --- --- --- 3.00 24,767 423.00 0.00 0.00 0.00 --- 0.00 --- --- --- 3.10 26,076 423.10 0.00 0.00 0.00 --- 0.00 --- --- --- 3.20 27,384 423.20 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 --- --- 0.000 Continues on next page Wet Basin Stage / Storage / Discharge Table Stage Storage Elevation CIvA CIvB CIvC PrfRsr WrA WrB WrC Wrl) ExfiI User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 3.30 28,693 423.30 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 3.40 30,002 423.40 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 3.50 31,311 423.50 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 3.60 32,620 423.60 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 3.70 33,929 423.70 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 3.80 35,238 423.80 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 3.90 36,547 423.90 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 4.00 37,856 424.00 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 4.10 39,514 424.10 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 4.20 41,173 424.20 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 4.30 42,832 424.30 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 4.40 44,490 424.40 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 4.50 46,149 424.50 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 4.60 47,808 424.60 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 4.70 49,466 424.70 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 4.80 51,125 424.80 0.00 0.00 0.00 --- 0.00 --- --- --- --- --- 0.000 4.90 52,784 424.90 0.00 is 0.00 is 0.00 --- 0.00 --- --- --- --- --- 0.000 5.00 54,442 425.00 0.02 is 0.02 is 0.00 --- 0.00 --- --- --- --- --- 0.018 5.10 56,563 425.10 0.06 is 0.05 is 0.00 --- 0.00 --- --- --- --- --- 0.051 5.20 58,683 425.20 0.07 is 0.07 is 0.00 --- 0.00 --- --- --- --- --- 0.073 5.30 60,804 425.30 0.09 is 0.09 is 0.00 --- 0.00 --- --- --- --- --- 0.089 5.40 62,925 425.40 0.11 is 0.10 is 0.00 --- 0.00 --- --- --- --- --- 0.103 5.50 65,045 425.50 0.12 is 0.12 is 0.00 --- 0.00 --- --- --- --- --- 0.116 5.60 67,166 425.60 0.13 is 0.13 is 0.00 --- 0.00 --- --- --- --- --- 0.127 5.70 69,287 425.70 0.15 is 0.14 is 0.00 --- 0.00 --- --- --- --- --- 0.137 5.80 71,407 425.80 0.15 is 0.15 is 0.00 --- 0.00 --- --- --- --- --- 0.146 5.90 73,528 425.90 0.16 is 0.16 is 0.00 --- 0.00 --- --- --- --- --- 0.155 6.00 75,649 426.00 0.16 is 0.16 is 0.00 --- 0.00 --- --- --- --- --- 0.164 6.10 78,115 426.10 0.18 is 0.17 is 0.22 is --- 0.00 --- --- --- --- --- 0.387 6.20 80,581 426.20 0.18 is 0.18 is 0.61 is --- 0.00 --- --- --- --- --- 0.789 6.30 83,047 426.30 0.19 is 0.19 is 1.12 is --- 0.00 --- --- --- --- --- 1.306 6.40 85,514 426.40 0.20 is 0.19 is 1.72 is --- 0.00 --- --- --- --- --- 1.917 6.50 87,980 426.50 0.20 is 0.20 is 2.41 is --- 0.00 --- --- --- --- --- 2.608 6.60 90,446 426.60 0.22 is 0.21 is 3.17 is --- 0.00 --- --- --- --- --- 3.372 6.70 92,912 426.70 0.22 is 0.21 is 3.89 is --- 0.00 --- --- --- --- --- 4.101 6.80 95,379 426.80 0.22 is 0.22 is 4.39 is --- 0.00 --- --- --- --- --- 4.606 6.90 97,845 426.90 0.23 is 0.23 is 4.83 is --- 0.00 --- --- --- --- --- 5.059 7.00 100,311 427.00 0.24 is 0.23 is 5.24 is --- 0.00 --- --- --- --- --- 5.474 7.10 103,015 427.10 0.24 is 0.24 is 5.62 is --- 0.00 --- --- --- --- --- 5.859 7.20 105,718 427.20 0.24 is 0.24 is 5.98 is --- 0.00 --- --- --- --- --- 6.220 7.30 108,421 427.30 0.25 is 0.25 is 6.31 is --- 0.00 --- --- --- --- --- 6.561 7.40 111,124 427.40 0.27 is 0.25 is 6.63 is --- 0.00 --- --- --- --- --- 6.885 7.50 113,828 427.50 0.27 is 0.26 is 6.93 is --- 0.00 --- --- --- --- --- 7.194 7.60 116,531 427.60 1.99 is 0.26 is 7.23 is --- 1.69 --- --- --- --- --- 9.176 7.70 119,234 427.70 5.04 is 0.27 is 7.51 is --- 4.77 --- --- --- --- --- 12.54 7.80 121,937 427.80 9.07 is 0.27 is 7.78 is --- 8.76 --- --- --- --- --- 16.81 7.90 124,641 427.90 13.76 oc 0.28 is 8.04 is --- 13.48 --- --- --- --- --- 21.80 8.00 127,344 428.00 19.12 oc 0.28 is 8.29 is --- 18.84 --- --- --- --- --- 27.41 8.10 130,290 428.10 24.99 is 0.23 is 8.53 is --- 24.76 --- --- --- --- --- 33.53 8.20 133,235 428.20 30.91 is 0.13 is 8.77 is --- 30.78 s --- --- --- --- --- 39.68 8.30 136,181 428.30 32.12 is 0.10 is 9.00 is --- 32.01 s --- --- --- --- --- 41.12 8.40 139,127 428.40 32.86 is 0.09 is 9.23 is --- 32.77 s --- --- --- --- --- 42.09 8.50 142,073 428.50 33.45 is 0.08 is 9.45 is --- 33.37 s --- --- --- --- --- 42.90 8.60 145,019 428.60 33.95 is 0.07 is 9.67 is --- 33.88 s --- --- --- --- --- 43.61 8.70 147,965 428.70 34.39 is 0.06 is 9.88 is --- 34.32 s --- --- --- --- --- 44.26 8.80 150,911 428.80 34.80 is 0.05 is 10.08 is --- 34.74 s --- --- --- --- --- 44.88 8.90 153,856 428.90 35.19 is 0.05 is 10.29 is --- 35.13 s --- --- --- --- --- 45.46 9.00 156,802 429.00 35.56 is 0.04 is 10.48 is --- 35.51 s --- --- --- --- --- 46.04 ... End Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk@ Civil 3DO by Autodesk, Inc. v2022 Hyd. No. Hydrograph type (origin) Peak flow (cfs) Time interval (min) Time to Peak (min) Hyd. volume (cuft) Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph Description 1 SCS Runoff 12.02 1 738 61,213 ------ ------ ------ Existing Site 2 SCS Runoff 43.90 1 722 118,603 ------ ------ ------ Proposed Site 3 Reservoir 6.325 1 750 105,971 2 427.23 106,548 Proposed Basin 4 SCS Runoff 10.54 1 728 38,362 ------ ------ ------ Existing Site 2 5 SCS Runoff 4.609 1 727 15,507 ------ ------ ------ Existing Site 3 7 SCS Runoff 2.268 1 724 6,844 ------ ------ ------ Proposed Site 2 8 SCS Runoff 2.616 1 718 5,256 ------ ------ ------ Proposed Site 3 9 SCS Runoff 5.390 1 723 14,753 ------ ------ ------ Proposed Site 4 22-0193_Youngsville Academy_Detention D sRgYtU01Rd09.Oar Tuesday, 12 / 6 / 2022 Hydrograph Report Hydraflow Hydrographs Extension for AUtodeskS Civil 3DO by Autodesk, Inc. v2022 Tuesday, 12 / 6 / 2022 Hyd. No. 3 Proposed Basin Hydrograph type = Reservoir Peak discharge = 6.325 cfs Storm frequency = 10 yrs Time to peak = 750 min Time interval = 1 min Hyd. volume = 105,971 cuft Inflow hyd. No. = 2 - Proposed Site Max. Elevation = 427.23 ft Reservoir name = Wet Basin Max. Storage = 106,548 cuft Storage Indication method used. Wet pond routing start elevation = 424.90 ft. Q (cfs) 50.00 40.00 30.00 10.00 0.00 0 300 — Hyd No. 3 Me Proposed Basin Hyd. No. 3 -- 10 Year 900 1200 Hyd No. 2 1500 1800 2100 2400 2700 ® Total storage used = 106,548 cuft Q (cfs) 50.00 40.00 30.00 20.00 10.00 1 0.00 3000 Time (min) Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk@ Civil 3DO by Autodesk, Inc. v2022 Hyd. No. Hydrograph type (origin) Peak flow (cfs) Time interval (min) Time to Peak (min) Hyd. volume (cuft) Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph Description 1 SCS Runoff 25.36 1 738 123,764 ------ ------ ------ Existing Site 2 SCS Runoff 84.01 1 722 226,163 ------ ------ ------ Proposed Site 3 Reservoir 41.97 1 732 213,232 2 428.39 138,756 Proposed Basin 4 SCS Runoff 23.78 1 727 81,818 ------ ------ ------ Existing Site 2 5 SCS Runoff 9.306 1 726 30,598 ------ ------ ------ Existing Site 3 7 SCS Runoff 4.560 1 724 13,504 ------ ------ ------ Proposed Site 2 8 SCS Runoff 4.906 1 718 10,023 ------ ------ ------ Proposed Site 3 9 SCS Runoff 10.96 1 722 29,463 ------ ------ ------ Proposed Site 4 22-0193_Youngsville Academy_Detention D sRgYtU01Rd0UAa6ear Tuesday, 12 / 6 / 2022 10 Hydrograph Report Hydraflow Hydrographs Extension for AUtodeskS Civil 3DO by Autodesk, Inc. v2022 Tuesday, 12 / 6 / 2022 Hyd. No. 3 Proposed Basin Hydrograph type = Reservoir Peak discharge = 41.97 cfs Storm frequency = 100 yrs Time to peak = 732 min Time interval = 1 min Hyd. volume = 213,232 cuft Inflow hyd. No. = 2 - Proposed Site Max. Elevation = 428.39 ft Reservoir name = Wet Basin Max. Storage = 138,756 cuft Storage Indication method used. Wet pond routing start elevation = 424.90 ft. Q (cfs) 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 Proposed Basin Hyd. No. 3 -- 100 Year Q (cfs) 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time (min) — Hyd No. 3 — Hyd No. 2 Total storage used = 138,756 cult Hydraflow Rainfall Report 11 Hydraflow Hydrographs Extension for Autodeskg Civil 3DO by Autodesk, Inc. v2022 Return Period Intensity -Duration -Frequency Equation Coefficients (FHA) (Yrs) B D E (NIA) 1 65.1130 13.0000 0.8983 -------- 2 38.5394 10.8000 0.6957 -------- 3 0.0000 0.0000 0.0000 -------- 5 41.8609 10.5000 0.6880 -------- 10 45.0251 10.4000 0.6853 -------- 25 50.0757 10.3000 0.6824 -------- 50 53.7620 10.2000 0.6788 -------- 100 60.1300 10.5000 0.6864 -------- File name: Youngsville Rainfall Data.IDF Intensity = B / (Tc + D)^E Tuesday, 12 / 6 / 2022 Return Period Intensity Values (in/hr) (Yrs) 5 min 10 15 20 25 30 35 40 45 50 55 60 1 4.85 3.89 3.26 2.82 2.48 2.22 2.01 1.84 1.70 1.58 1.47 1.38 2 5.65 4.67 4.02 3.55 3.20 2.92 2.69 2.51 2.35 2.21 2.09 1.99 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5 6.35 5.24 4.51 3.99 3.59 3.28 3.03 2.82 2.64 2.49 2.36 2.24 10 6.91 5.70 4.91 4.34 3.91 3.57 3.30 3.07 2.88 2.71 2.57 2.44 25 7.78 6.42 5.52 4.88 4.40 4.02 3.71 3.46 3.24 3.05 2.89 2.75 50 8.48 6.99 6.01 5.32 4.79 4.38 4.04 3.77 3.53 3.33 3.15 3.00 100 9.16 7.56 6.51 5.76 5.19 4.74 4.38 4.07 3.82 3.60 3.41 3.24 Tc = time in minutes. Values may exceed 60. Precip. file name: Sample.pcp Storm Rainfall Precipitation Table (in) Distribution 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr SCS 24-hour 2.88 3.10 0.00 3.30 5.04 5.77 6.80 7.49 SCS 6-Hr 0.00 1.80 0.00 0.00 0.00 0.00 0.00 0.00 Huff-1 st 0.00 1.55 0.00 2.75 0.00 5.38 6.50 0.00 Huff-2nd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Huff-3rd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Huff-4th 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Huff-Indy 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Custom 0.00 1.75 0.00 2.80 0.00 5.25 6.00 0.00 c 0_^ LLU U oCo ry z U '3 � LL 0 3 O _ a 0 E c to 0 .x�3 E� �°_ c0 CmZ .� .0 :a 0U0 C .w U O 0 L U a °� (Da�3 0- a0� 0E '=E 0 .c'• N G � O L Cm ii 3DO I Outlet k ' t 0.4La Gip' Orrreter (Ob) LLa 5DO 2 L9 7.0 0 09 70 Outlet Structure 1 La=32 dso6" so 100 Discharge(ft3lsu ) 2 IE CL1 CC N N 0 N 0 c 0_^ LLU U oCo ry z U '3 � LL 0 3 O _ a 0 E c to 0 .x�3 E� �°_ c0 CmZ .� .0 :a 0U0 C .w U O 0 L U a °� (Da�3 0- a0� 0E '=E 0 .c'• N G � O L p1 LL 3DO I OOtlet k ' t 0.4La Gip' Orrreter (Ob) LLa 5DO 2 L9 7.0 0 09 70 Outlet Structure 10 La=32 dso6" 5o 100 Diwharge (ft3lsec) N N 0 N 0 3DO I Outlet k ' t 0.4La Gip' Orrreter (Obj LLa c I5DO t= U 0 ry U '3 � LL 0 3 O _ a 0 E c to 0 .x�3 E� �°_ c0 Cm Z .� .0 :a 0U0 C .w U O 0 L U 0, a0� a0E: '=E O .c'• N G � O L p1 LL 09 70 Outlet Structure 20 La=32 dso6" 5o 100 Discharge (fl3fsec) 2 [f� Q i CC N N 0 N 0