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HomeMy WebLinkAboutWPO201800013 Calculations WPO VSMP 2018-11-15 wfo =ollS000 1 3 ..r.Aab 111 Watershed Model Schematic Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 CD tD iii 506 51.1.10.187 Legend LI in Description 1 SCS Runoff DA11 to P0I-11 2 SCS Runoff DA11 (POND 11) APPROVED 3 SCS Runoff ROW(POND11) 4 SCS Runoff BLOCK 4A/8A(POND 11) by the Albemarle County 5 Combine Inflow to Pond 11 rorrm!7g'a'r n"' !omeet Department 6 Reservoir Pond 11 ` LSjI a• 7 Combine Inflow to Level Spreader 8 Reservoir Level Spreader I Z U i c G cl GL.3 Project: Storm Routings Pond 11 (Road).gpw Friday, 09/21 /2018 2 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21/2018 Hyd. No. 1 DA11 to P0I-11 Hydrograph type = SCS Runoff Peak discharge = 3.645 cfs Storm frequency = 1 yrs Time to peak = 750 min Time interval = 2 min Hyd. volume = 33,830 cuft Drainage area = 21.370 ac Curve number = 63* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 52.00 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(3.650 x 73)+(0.610 x 61)+(14.390 x 56)]/21.370 DA11 to P0I-11 Q(cfs) Hyd. No. 1 -- 1 Year Q(cfs) 4.00 4.00 3.00 ll 3.00 2.00 2.00 1.00 1.00 0.00 - - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 1 Time(min) 3 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 2 DA11 (POND 11) Hydrograph type = SCS Runoff Peak discharge = 0.754 cfs Storm frequency = 1 yrs Time to peak = 724 min Time interval = 2 min Hyd. volume = 3,304 cuft Drainage area = 2.650 ac Curve number = 60* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 10.00 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(1.530 x 59)+(1.120 x 61)]/2.650 DA11 (POND 11) Q(cfs) Hyd. No. 2-- 1 Year Q(cfs) 1.00 1.00 0.90 0.90 0.80 0.80 0.70 0.70 0.60 0.60 0.50 0.50 0.40 0.40 0.30 0.30 0.20 0.20 0.10 0.10 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 2 Time(min) 4 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 3 ROW (POND11) Hydrograph type = SCS Runoff Peak discharge = 14.44 cfs Storm frequency = 1 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 29,845 cuft Drainage area = 4.420 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 5.00 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 ROW (POND11) Q(cfs) Q(cfs) Hyd. No. 3-- 1 Year 15.00 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 j\........ 0.00 ------ 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 Hyd No. 3 Time (min) 5 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 4 BLOCK 4A/8A (POND 11) Hydrograph type = SCS Runoff Peak discharge = 1.137 cfs Storm frequency = 1 yrs Time to peak = 742 min Time interval = 2 min Hyd. volume = 11,031 cuft Drainage area = 10.970 ac Curve number = 58 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 32.10 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 BLOCK 4A/8A (POND 11) Q(cfs) Hyd. No.4-- 1 Year Q(cfs) 2.00 2.00 • 4 1.00 1.00 0.00 -' 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No.4 Time(min) 6 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 5 Inflow to Pond 11 Hydrograph type = Combine Peak discharge = 14.75 cfs Storm frequency = 1 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 44,180 cuft Inflow hyds. = 2, 3, 4 Contrib. drain. area = 18.040 ac Inflow to Pond 11 Q (cfs) Hyd. No. 5-- 1 Year Q (cfs) 15.00 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time (min) Hyd No. 5 Hyd No. 2 Hyd No. 3 Hyd No. 4 7 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 6 Pond 11 Hydrograph type = Reservoir Peak discharge = 0.847 cfs Storm frequency = 1 yrs Time to peak = 840 min Time interval = 2 min Hyd. volume = 44,143 cuft Inflow hyd. No. = 5 - Inflow to Pond 11 Max. Elevation = 400.18 ft Reservoir name = Pond 11 Max. Storage = 71,378 cuft Storage Indication method used. Wet pond routing start elevation=399.00 ft. Pond 11 Q (cfs) Hyd. No. 6-- 1 Year Q (cfs) 15.00 , 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 0.00 0.00 0 360 720 1080 1440 1800 2160 2520 2880 3240 Time (min) Hyd No. 6 Hyd No. 5 Total storage used = 71,378 cuft Pond Report 8 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Pond No. 1 - Pond 11 Pond Data Contours-User-defined contour areas.Average end area method used for volume calculation.Begining Elevation=389.00 ft Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0.00 389.00 645 0 0 1.00 390.00 1,111 878 878 2.00 391.00 1,699 1,405 2,283 3.00 392.00 2,417 2,058 4,341 4.00 393.00 3,257 2,837 7,178 5.00 394.00 4,229 3,743 10,921 6.00 395.00 5,320 4,775 15,696 7.00 396.00 6,547 5,934 21,629 8.00 397.00 7,905 7,226 28,855 9.00 398.00 9,596 8,751 37,606 10.00 399.00 14,542 12,069 49,675 11.00 400.00 20,724 17,633 67,308 12.00 401.00 23,709 22,217 89,524 13.00 402.00 27,957 25,833 115,357 14.00 403.00 31,403 29,680 145,037 15.00 404.00 34,584 32,994 178,031 Culvert/Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 60.00 4.00 6.00 0.00 Crest Len(ft) = 32.00 16.00 20.00 0.00 Span(in) = 60.00 4.00 6.00 0.00 Crest El.(ft) = 402.75 401.50 403.25 0.00 No.Barrels = 1 2 1 0 Weir Coeff. = 3.33 3.33 2.60 3.33 Invert El.(ft) = 389.00 399.00 401.00 0.00 Weir Type = 1 Rect Broad --- Length(ft) = 50.00 0.00 0.00 0.00 Multi-Stage = Yes Yes Yes No Slope(%) = 1.50 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 Yes No TW Elev.(ft) = 0.00 Note:Culvert/Onfice 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 Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 389.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- --- 0.000 1.00 878 390.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- --- 0.000 2.00 2,283 391.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- --- 0.000 3.00 4,341 392.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- -- 0.000 4.00 7,178 393.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- --- 0.000 5.00 10,921 394.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- -- --- 0.000 6.00 15,696 395.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- --- 0.000 7.00 21,629 396.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- -- --- 0.000 8.00 28,855 397.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- --- 0.000 9.00 37,606 398.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- --- 0.000 10.00 49,675 399.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- --- 0.000 11.00 67,308 400.00 0.82 ic 0.77 ic 0.00 --- 0.00 0.00 0.00 --- --- --- 0.767 12.00 89,524 401.00 1.17 ic 1.14 ic 0.00 --- 0.00 0.00 0.00 --- --- --- 1.138 13.00 115,357 402.00 21.54 ic 1.41 ic 0.82 ic --- 0.00 18.84 0.00 --- --- --- 21.07 14.00 145,037 403.00 114.10 oc 1.65 is 1.25 is --- 13.32 97.88 0.00 --- --- --- 114.10 15.00 178,031 404.00 323.46 ic 0.75 ic 0.84 ic --- 135.21 s 152.88 s 33.77 --- --- --- 323.45 9 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 7 Inflow to Level Spreader Hydrograph type = Combine Peak discharge = 4.443 cfs Storm frequency = 1 yrs Time to peak = 752 min Time interval = 2 min Hyd. volume = 77,973 cuft Inflow hyds. = 1, 6 Contrib. drain. area = 21.370 ac Inflow to Level Spreader Q (cfs) Hyd. No. 7-- 1 Year Q (cfs) 5.00 5.00 A 4.00 4.00 1 3.00 3.00 2.00 2.00 1.00 - 1.00 0.00 — 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 Time (min) Hyd No. 7 Hyd No. 1 Hyd No. 6 10 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 8 Level Spreader Hydrograph type = Reservoir Peak discharge = 4.444 cfs Storm frequency = 1 yrs Time to peak = 752 min Time interval = 2 min Hyd. volume = 77,316 cuft Inflow hyd. No. = 7 - Inflow to Level Spreader Max. Elevation = 348.69 ft Reservoir name = Level Spreader Max. Storage = 779 cuft Storage Indication method used. Level Spreader o (cfs) Hyd. No. 8-- 1 Year Q (cfs) 5.00 5.00 4.00 4.00 3.00 3.00 2.00 2.00 1.00 1.00 0.00 - A - 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 Time (min) Hyd No. 8 Hyd No. 7 Total storage used = 779 cuft Pond Report 11 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Pond No. 5- Level Spreader Pond Data Contours-User-defined contour areas.Conic method used for volume calculation.Begining Elevation=347.00 ft Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0.00 347.00 157 0 0 1.00 348.00 610 359 359 2.63 348.00 610 994 1,353 4.00 351.00 2,000 1,696 3,049 Culvert/Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 0.00 0.00 0.00 0.00 Crest Len(ft) = 64.00 0.00 0.00 0.00 Span(in) = 0.00 0.00 0.00 0.00 Crest El.(ft) = 348.63 0.00 0.00 0.00 No.Barrels = 0 0 0 0 Weir Coeff. = 3.33 3.33 3.33 3.33 Invert El.(ft) = 0.00 0.00 0.00 0.00 Weir Type = Rect - - - Length(ft) = 0.00 0.00 0.00 0.00 Multi-Stage = No No No No Slope(%) = 0.00 0.00 0.00 n/a N-Value = .013 .013 .013 n/a Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(inlhr) = 0.000(by Wet area) Multi-Stage = n/a No No No TW Elev.(ft) = 0.00 Note:Culvert/Orifice outflows are analyzed under inlet(rc)and oudet(oc)control. Weir risers checked for orifice conditions(lc)and submergence(s)_ Stage/Storage/Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 347.00 - - - - 0.00 - - - - - 0.000 1.00 359 348.00 - - - - 0.00 - - - - - 0.000 2.63 1,353 348.00 - - - - 0.00 - - - - - 0.000 4.00 3,049 351.00 - - - - 777.58 - - - - - 777.58 12 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 1 DA11 to P01-11 Hydrograph type = SCS Runoff Peak discharge = 7.200 cfs Storm frequency = 2 yrs Time to peak = 748 min Time interval = 2 min Hyd. volume = 56,198 cuft Drainage area = 21.370 ac Curve number = 63* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 52.00 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(3.650 x 73)+(0.610 x 61)+(14.390 x 56)1/21.370 DA11 to P01-11 Q(cfs) Hyd. No. 1 —2 Year Q(cfs) 8.00 - 8.00 6.00 6.00 4.00 4.00 2.00 2.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 1 Time(min) Hydrograph Report 13 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 2 DA11 (POND 11) Hydrograph type = SCS Runoff Peak discharge = 1.733 cfs Storm frequency = 2 yrs Time to peak = 722 min Time interval = 2 min Hyd. volume = 5,792 cuft Drainage area = 2.650 ac Curve number = 60* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 10.00 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(1.530 x 59)+(1.120 x 61)]/2.650 DA11 (POND 11) Q(cfs) Q(cfs) Hyd. No. 2—2 Year 2.00 2.00 • 1.00 1.00 0.00 — , 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 2 Time(min) 14 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 3 ROW (POND11) Hydrograph type = SCS Runoff Peak discharge = 18.40 cfs Storm frequency = 2 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 38,514 cuft Drainage area = 4.420 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 5.00 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 ROW (POND11) Q(cfs) Hyd. No. 3--2 Year Q(cfs) 21.00 21.00 18.00 18.00 15.00 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 _ J _ 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 Hyd No. 3 Time(min) 15 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 4 BLOCK 4A/8A (POND 11) Hydrograph type = SCS Runoff Peak discharge = 2.941 cfs Storm frequency = 2 yrs Time to peak = 736 min Time interval = 2 min Hyd. volume = 20,202 cuft Drainage area = 10.970 ac Curve number = 58 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 32.10 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 BLOCK 4A/8A (POND 11) Q( S) Hyd. No.4—2 Year Q(cfs) 3.00 3.00 • 2.00 2.00 • 1.00 1.00 0.00 — 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No.4 Time(min) 16 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 5 Inflow to Pond 11 Hydrograph type = Combine Peak discharge = 19.74 cfs Storm frequency = 2 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 64,508 cuft Inflow hyds. = 2, 3, 4 Contrib. drain. area = 18.040 ac Inflow to Pond 11 Q (cfs) Hyd. No. 5--2 Year Q (cfs) 21.00 21.00 18.00 18.00 15.00 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 ( 3.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time (min) Hyd No. 5 Hyd No. 2 Hyd No. 3 Hyd No. 4 17 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 6 Pond 11 Hydrograph type = Reservoir Peak discharge = 1 .050 cfs Storm frequency = 2 yrs Time to peak = 876 min Time interval = 2 min Hyd. volume = 64,471 cuft Inflow hyd. No. = 5 - Inflow to Pond 11 Max. Elevation = 400.73 ft Reservoir name = Pond 11 Max. Storage = 83.485 cuft Storage Indication method used. Wet pond routing start elevation=399 00 ft Pond 11 Q(cfs) Q(cfs) Hyd. No. 6--2 Year 21.00 21.00 18.00 18.00 15.00 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 0.00 J _ 0.00 0 360 720 1080 1440 1800 2160 2520 2880 3240 3600 Time (min) Hyd No. 6 Hyd No. 5 Total storage used = 83.485 cuft 18 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 7 Inflow to Level Spreader Hydrograph type = Combine Peak discharge = 8.157 cfs Storm frequency = 2 yrs Time to peak = 748 min Time interval = 2 min Hyd. volume = 120,669 cuft Inflow hyds. = 1, 6 Contrib. drain. area = 21.370 ac Inflow to Level Spreader Q (cfs) Hyd. No. 7-- 2 Year 0 (cfs) 10.00 10.00 8.00 8.00 6.00 6.00 4.00 4.00 2.00 2.00 0.00 - 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 2400 Time (min) Hyd No. 7 Hyd No. 1 Hyd No. 6 19 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 8 Level Spreader Hydrograph type = Reservoir Peak discharge = 8.154 cfs Storm frequency = 2 yrs Time to peak = 748 min Time interval = 2 min Hyd. volume = 120,012 cuft Inflow hyd. No. = 7 - Inflow to Level Spreader Max. Elevation = 348.73 ft Reservoir name = Level Spreader Max. Storage = 802 cuft Storage Indication method used. Level Spreader Q(cfs) Hyd. No. 8--2 Year Q (cfs) 10.00 10.00 8.00 . 8.00 6.00 6.00 4.00 4.00 2.00 2.00 0.00 - — 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 2400 Time (min) Hyd No. 8 Hyd No. 7 Total storage used = 802 cuft 20 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 1 DA11 to P0I-11 Hydrograph type = SCS Runoff Peak discharge = 22.01 cfs Storm frequency = 10 yrs Time to peak = 746 min Time interval = 2 min Hyd. volume = 141,855 cuft Drainage area = 21.370 ac Curve number = 63* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 52.00 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 Composite(Area/CN)=[(3.650 x 73)+(0.610 x 61)+(14.390 x 56)]/21.370 DA11 to P0I-11 Q(cfs) Hyd. No. 1 -- 10 Year Q (cfs) 24.00 24.00 20.00 20.00 16.00 16.00 12.00 12.00 8.00 8.00 4.00 4.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 1 Time(min) 21 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21/2018 Hyd. No. 2 DA11 (POND 11) Hydrograph type = SCS Runoff Peak discharge = 5.781 cfs Storm frequency = 10 yrs Time to peak = 722 min Time interval = 2 min Hyd. volume = 15,713 cuft Drainage area = 2.650 ac Curve number = 60* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 10.00 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 Composite(Area/CN)_[(1.530 x 59)+(1.120 x 61)]/2.650 DA11 (POND 11) Q(cfs) Hyd. No. 2-- 10 Year Q(cfs) 6.00 6.00 5.00 5.00 • 4.00 4.00 3.00 3.00 2.00 2.00 1.00 1.00 0.00 - — 1 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 2 Time(min) 22 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 3 ROW (POND11) Hydrograph type = SCS Runoff Peak discharge = 30.15 cfs Storm frequency = 10 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 65,143 cuft Drainage area = 4.420 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 5.00 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 ROW (POND11) Q(cfs) Hyd. No. 3-- 10 Year Q(cfs) 35.00 35.00 30.00 30.00 25.00 25.00 20.00 20.00 15.00 l 15.00 10.00 10.00 J„,.......... 5.00 5.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 Hyd No. 3 Time(min) 23 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 4 BLOCK 4A/8A (POND 11) Hydrograph type = SCS Runoff Peak discharge = 11.75 cfs Storm frequency = 10 yrs Time to peak = 734 min Time interval = 2 min Hyd. volume = 57,899 cuft Drainage area = 10.970 ac Curve number = 58 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 32.10 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 BLOCK 4A/8A (POND 11) Q(cfs) Hyd. No.4-- 10 Year Q(cfs) 12.00 12.00 • 10.00 10.00 8.00 8.00 6.00 6.00 4.00 4.00 2.00 2.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No.4 Time(min) 24 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 5 Inflow to Pond 11 Hydrograph type = Combine Peak discharge = 38.49 cfs Storm frequency = 10 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 138,756 cuft Inflow hyds. = 2, 3, 4 Contrib. drain. area = 18.040 ac Inflow to Pond 11 Q (cfs) Hyd. No. 5-- 10 Year Q (cfs) 40.00 I 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time (min) Hyd No. 5 Hyd No. 2 Hyd No. 3 Hyd No. 4 25 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 6 Pond 11 Hydrograph type = Reservoir Peak discharge = 10.11 cfs Storm frequency = 10 yrs Time to peak = 754 min Time interval = 2 min Hyd. volume = 138,719 cuft Inflow hyd. No. = 5 - Inflow to Pond 11 Max. Elevation = 401 .78 ft Reservoir name = Pond 11 Max. Storage = 109,740 cuft Storage Indication method used Wet pond routing start elevation=399 00 ft Pond 11 Q(cfs) Hyd. No. 6-- 10 Year Q (cfs) 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 Lft. 0.00 - --J —_._ � - 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 2400 2640 Time (min) Hyd No. 6 Hyd No. 5 Total storage used = 109,740 cuft 26 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 7 Inflow to Level Spreader Hydrograph type = Combine Peak discharge = 31.55 cfs Storm frequency = 10 yrs Time to peak = 750 min Time interval = 2 min Hyd. volume = 280,574 cuft Inflow hyds. = 1, 6 Contrib. drain. area = 21.370 ac Inflow to Level Spreader Q (cfs) Hyd. No. 7-- 10 Year Q (cfs) 35.00 35.00 30.00 30.00 25.00 25.00 20.00 20.00 15.00 15.00 10.00 1 10.00 5.00 5.00 0.00 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 2400 Time (min) Hyd No. 7 Hyd No. 1 Hyd No. 6 27 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 8 Level Spreader Hydrograph type = Reservoir Peak discharge = 31.58 cfs Storm frequency = 10 yrs Time to peak = 750 min Time interval = 2 min Hyd. volume = 279,916 cuft Inflow hyd. No. = 7 - Inflow to Level Spreader Max. Elevation = 348.91 ft Reservoir name = Level Spreader Max. Storage = 910 cuft Storage Indication method used. Level Spreader Q(cfs) Q(cfs) Hyd. No. 8-- 10 Year 35.00 35.00 30.00 _ 30.00 25.00 25.00 20.00 20.00 15.00 15.00 10.00 10.00 5.00 5.00 J 0.00 - 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 2400 Time(min) Hyd No. 8 Hyd No. 7 Total storage used =910 cuft 28 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 1 DA11 to P0I-11 Hydrograph type = SCS Runoff Peak discharge = 57.76 cfs Storm frequency = 100 yrs Time to peak = 746 min Time interval = 2 min Hyd. volume = 347,576 cuft Drainage area = 21.370 ac Curve number = 63* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 52.00 min Total precip. = 8.97 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(3.650 x 73)+(0.610 x 61)+(14.390 x 56)]/21.370 DA11 to P0I-11 Q(cfs) Q(cfs) Hyd. No. 1 — 100 Year 60.00 60.00 50.00 50.00 • 40.00 40.00 30.00 30.00 • 20.00 20.00 10.00 10.00 0.00 - � - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 1 Time (min) 29 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21/2018 Hyd. No. 2 DA11 (POND 11) Hydrograph type = SCS Runoff Peak discharge = 15.52 cfs Storm frequency = 100 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 40,447 cuft Drainage area = 2.650 ac Curve number = 60* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 10.00 min Total precip. = 8.97 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 Composite(Area/CN)=[(1.530 x 59)+(1.120 x 61)j/2.650 DA11 (POND 11) Q(cfs) Hyd. No. 2— 100 Year Q(cfs) 18.00 18.00 • 15.00 15.00 12.00 12.00 • 9.00 9.00 6.00 6.00 3.00 3.00 ____ 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 2 Time(min) Hydrograph Report 30 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21/2018 Hyd. No. 3 ROW (POND11) Hydrograph type = SCS Runoff Peak discharge = 52.03 cfs Storm frequency = 100 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 116,753 cuft Drainage area = 4.420 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 5.00 min Total precip. = 8.97 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 ROW (POND11) Q(cfs) Q(cfs) Hyd. No. 3— 100 Year 60.00 60.00 50.00 50.00 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 Hyd No. 3 Time(min) 31 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21/2018 Hyd. No. 4 BLOCK 4A/8A (POND 11) Hydrograph type = SCS Runoff Peak discharge = 35.01 cfs Storm frequency = 100 yrs Time to peak = 734 min Time interval = 2 min Hyd. volume = 154,513 cuft Drainage area = 10.970 ac Curve number = 58 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 32.10 min Total precip. = 8.97 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 BLOCK 4A/8A (POND 11) Q(cfs) Hyd. No.4— 100 Year Q(cfs) 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No.4 Time (min) 32 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 5 Inflow to Pond 11 Hydrograph type = Combine Peak discharge = 81.35 cfs Storm frequency = 100 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 311,713 cuft Inflow hyds. = 2, 3, 4 Contrib. drain. area = 18.040 ac Inflow to Pond 11 Q (cfs) Hyd. No. 5-- 100 Year Q (cfs) 90.00 90.00 80.00 80.00 70.00 70.00 60.00 60.00 50.00 50.00 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time (min) Hyd No. 5 Hyd No. 2 Hyd No. 3 Hyd No. 4 33 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 6 Pond 11 Hydrograph type = Reservoir Peak discharge = 51.11 cfs Storm frequency = 100 yrs Time to peak = 726 min Time interval = 2 min Hyd. volume = 311 ,676 cuft Inflow hyd. No. = 5 - Inflow to Pond 11 Max. Elevation = 402.44 ft Reservoir name = Pond 11 Max. Storage = 128,399 cuft Storage Indication method used. Wet pond routing start elevation = 399 00 ft Pond 11 Q (cfs) Hyd. No. 6 -- 100 Year Q (cfs) 90.00 90.00 80.00 80.00 70.00 70.00 60.00 60.00 50.00 50.00 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 2400 Time (min) Hyd No. 6 Hyd No. 5 Total storage used = 128,399 cuft 34 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 7 Inflow to Level Spreader Hydrograph type = Combine Peak discharge = 99.18 cfs Storm frequency = 100 yrs Time to peak = 742 min Time interval = 2 min Hyd. volume = 659,252 cuft Inflow hyds. = 1, 6 Contrib. drain. area = 21.370 ac Inflow to Level Spreader Q (cfs) Hyd. No. 7-- 100 Year Q (cfs) 100.00 100.00 80.00 80.00 60.00 60.00 40.00 40.00 20.00 20.00 0.00 - p - 0.00 0 240 480 720 960 1200 1440 1680 1920 Time (min) Hyd No. 7 Hyd No. 1 Hyd No. 6 35 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21/2018 Hyd. No. 8 Level Spreader Hydrograph type = Reservoir Peak discharge = 99.17 cfs Storm frequency = 100 yrs Time to peak = 742 min Time interval = 2 min Hyd. volume = 658,594 cuft Inflow hyd. No. = 7 - Inflow to Level Spreader Max. Elevation = 349.23 ft Reservoir name = Level Spreader Max. Storage = 1,108 cuft Storage Indication method used. Level Spreader Q(cfs) Hyd. No. 8-- 100 Year 0 (cfs) 100.00 100.00 7 80.00 80.00 60.0060.00 40.00 40.00 20.00 20.00 0.00 __J •• • 0.00 0 240 480 720 960 1200 1440 1680 1920 Time (min) Hyd No. 8 Hyd No. 7 Total storage used = 1,108 cuft Watershed Model Schematic O Zel I000 • 3 -poNQ 1o� H ow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 elD I 111111113 4 Legend APPROVED Hvd. Origin Description by the Albemarle County 10) Community SCS Runoff DA10 (PONDCommunity eut'iopment Department 2 SCS Runoff DA10-UNDETAINED Date () �S �� 3 Reservoir Pond_10 Routing Fur 0)n 0 L0 i C 0.00 �2? 4 Combine Combined Outflow to P0I-10 Project: Storm Routings Pond 10 (Road).gpw Friday, 09/21 /2018 2 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 1 DA10 (POND 10) Hydrograph type = SCS Runoff Peak discharge = 2.598 cfs Storm frequency = 1 yrs Time to peak = 12.17 hrs Time interval = 2 min Hyd. volume = 12,816 cuft Drainage area = 7.400 ac Curve number = 64 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 20.80 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 DA10 (POND 10) Q(cfs) Q(cfs) Hyd. No. 1 - 1 Year 3.00 3.00 2.00 2.00 1.00 1.00 bill INInIIMUMWM 0.00 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 1 Time(hrs) 3 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,inc.v2020 Friday,09/21/2018 Hyd. No. 2 DA10 - UNDETAINED Hydrograph type = SCS Runoff Peak discharge = 0.525 cfs Storm frequency = 1 yrs Time to peak = 12.07 hrs Time interval = 2 min Hyd. volume = 2,517 cuft Drainage area = 2.220 ac Curve number = 59* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 12.50 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 •Composite(Area/CN)=[(3.070 x 56)+(0.600 x 61)]/2.220 DA10 - UNDETAINED Q(cfs) Hyd. No. 2— 1 Year Q(cfs) 1.00 1.00 0.90 0.90 0.80 0.80 0.70 0.70 0.60 0.60 0.50 0.50 0.40 0.40 0.30 0.30 0.20 0.20 0.10 0.10 0.00 t - 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 2 Time(hrs) 4 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc. v2020 Friday,09/21 /2018 Hyd. No. 3 Pond_10 Routing Hydrograph type = Reservoir Peak discharge = 0.126 cfs Storm frequency = 1 yrs Time to peak = 20.17 hrs Time interval = 2 min Hyd. volume = 12,723 cuft Inflow hyd. No. = 1 - DA10 (POND 10) Max. Elevation = 371.69 ft Reservoir name = Pond 10 Max. Storage = 36,721 cuft Storage Indication method used. Wet pond routing start elevation=371.00 ft. Pond_10 Routing Q (cfs) Hyd. No. 3-- 1 Year Q (cf: 3.00 3.00 2.00 2.00 1.00 - 1.00 061 0.00 - 1 0.00 0 10 20 30 40 50 60 70 80 90 100 Time (hrs) Hyd No. 3 Hyd No. 1 Total storage used = 36,721 cult Pond Report 5 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Pond No. 1 - Pond 10 Pond Data Contours-User-defined contour areas.Average end area method used for volume calculation.Begining Elevation=367.00 ft Stage /Storage Table Stage(ft) Elevation(ft) Contour area(sgft) Incr. Storage(cuft) Total storage(cuft) 0.00 367.00 4,575 0 0 1.00 368.00 5,770 5,173 5,173 2.00 369.00 7,086 6,428 11,601 3.00 370.00 8,524 7,805 19,406 4.00 371.00 10,499 9,512 28,917 5.00 372.00 12,142 11,321 40,238 6.00 373.00 13,971 13,057 53,294 7.00 374.00 16,586 15,279 68,573 8.00 375.00 18,641 17,614 86,186 Culvert/Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 42.00 2.50 Inactive 0.00 Crest Len(ft) = 32.00 8.00 50.00 0.00 Span(in) = 42.00 2.50 10.00 0.00 Crest El. (ft) = 373.75 372.75 373.85 0.00 No. Barrels = 1 1 1 0 Weir Coeff. = 3.33 3.33 2.60 3.33 Invert El.(ft) = 367.00 371.00 401.00 0.00 Weir Type = 1 Rect Broad -- Length(ft) = 69.55 0.00 0.00 0.00 Multi-Stage = Yes Yes Yes No Slope(%) = 1.43 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 Yes 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 Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 367.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- --- 0.000 1.00 5,173 368.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- -- 0.000 2.00 11,601 369.00 0.00 0.00 0.00 --- 0.00 0.00 0.00 --- --- --- 0.000 3.00 19,406 370.00 0.00 0.00 0.00 -- 0.00 0.00 0.00 --- --- --- 0.000 4.00 28,917 371.00 0.00 0.00 0.00 -- 0.00 0.00 0.00 --- --- --- 0.000 5.00 40,238 372.00 0.17 is 0.16 ic 0.00 -- 0.00 0.00 0.00 --- --- --- 0.155 6.00 53,294 373.00 3.60 is 0.23 ic 0.00 --- 0.00 3.33 0.00 --- --- --- 3.556 7.00 68,573 374.00 58.38 oc 0.28 is 0.00 --- 13.32 37.23 7.55 --- --- --- 58.38 8.00 86,186 375.00 115.46 is 0.03 is 0.00 --- 44.48 s 21.44 s 49.44 s --- --- -- 115.39 6 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 4 Combined Outflow to P0I-10 Hydrograph type = Combine Peak discharge = 0.537 cfs Storm frequency = 1 yrs Time to peak = 12.07 hrs Time interval = 2 min Hyd. volume = 15,240 cuft Inflow hyds. = 2, 3 Contrib. drain. area = 2.220 ac Combined Outflow to P0I-10 Q (cfs) Hyd. No. 4-- 1 Year Q (cfs) 1.00 1.00 0.90 0.90 0.80 0.80 0.70 0.70 0.60 0.60 0.50 0.50 0.400.40 0.30 0.30 0.20 0.20 IIIIII 0.10 0.10 0.00 - - 0.00 0 8 16 24 32 40 48 56 64 72 80 Time (hrs) Hyd No. 4 Hyd No. 2 Hyd No. 3 7 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 1 DA10 (POND 10) Hydrograph type = SCS Runoff Peak discharge = 5.003 cfs Storm frequency = 2 yrs Time to peak = 12.13 hrs Time interval = 2 min Hyd. volume = 20,960 cuft Drainage area = 7.400 ac Curve number = 64 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 20.80 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 DA10 (POND 10) Q(cfs) Hyd. No. 1 --2 Year 0 (cfs) 6.00 6.00 5.00 5.00 4.00 4.00 3.00 3.00 2.00 2.00 1.00 1.00 0.00 - - 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 1 Time (hrs) 8 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 2 DA10 - UNDETAINED Hydrograph type = SCS Runoff Peak discharge = 1.283 cfs Storm frequency = 2 yrs Time to peak = 12.03 hrs Time interval = 2 min Hyd. volume = 4,502 cuft Drainage area = 2.220 ac Curve number = 59* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 12.50 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(3.070 x 56)+(0.600 x 61)]/2.220 DA10 - UNDETAINED Q (cfs) Hyd. No. 2--2 Year Q (cfs) 2.00 2.00 1.00 1.00 0.00 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 2 Time (hrs) 9 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 3 Pond_10 Routing Hydrograph type = Reservoir Peak discharge = 0.171 cfs Storm frequency = 2 yrs Time to peak = 21 .67 hrs Time interval = 2 min Hyd. volume = 20,782 cult Inflow hyd. No. = 1 - DA10 (POND 10) Max. Elevation = 372.20 ft Reservoir name = Pond 10 Max. Storage = 42,800 cuft Storage Indication method used. Wet pond routing start elevation=371.00 ft. Pond_10 Routing Q(cfs) Hyd. No. 3--2 Year Q (cf 6.00 6.00 5.00 5.00 4.00 4.00 3.00 3.00 2.00 2.00 1.00 1.00 L 0.00 - 0.00 0 10 20 30 40 50 60 70 80 90 100 Time(hrs) Hyd No. 3 Hyd No. 1 Total storage used = 42,800 cuft 10 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 4 Combined Outflow to P0I-10 Hydrograph type = Combine Peak discharge = 1.314 cfs Storm frequency = 2 yrs Time to peak = 12.07 hrs Time interval = 2 min Hyd. volume = 25,284 cuft Inflow hyds. = 2, 3 Contrib. drain. area = 2.220 ac Combined Outflow to P0I-10 Q (cfs) Hyd. No. 4--2 Year Q (cfs) 2.00 2.00 1.00 1.00 0.00 — - 0.00 0 6 12 18 24 30 36 42 48 54 60 66 72 Time (hrs) Hyd No. 4 Hyd No. 2 Hyd No. 3 11 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 1 DA10 (POND 10) Hydrograph type = SCS Runoff Peak discharge = 14.32 cfs Storm frequency = 10 yrs Time to peak = 12.13 hrs Time interval = 2 min Hyd. volume = 51,774 cuft Drainage area = 7.400 ac Curve number = 64 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 20.80 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 DA10 (POND 10) Q (cfs) Hyd. No. 1 -- 10 Year Q (cfs) 15.00 15.00 i 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 0.00 \_ - 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 1 Time (hrs) 12 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 2 DA10 - UNDETAINED Hydrograph type = SCS Runoff Peak discharge = 4.575 cfs Storm frequency = 10 yrs Time to peak = 12.03 hrs Time interval = 2 min Hyd. volume = 12,544 cuft Drainage area = 2.220 ac Curve number = 59* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 12.50 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(3.070 x 56)+(0.600 x 61)]/2.220 DA10 - UNDETAINED Q(cfs) Hyd. No. 2 -- 10 Year Q (cfs) 5.00 5.00 4.00 4.00 3.00 3.00 2.00 2.00 1.00 1.00 / '..."------- . 0.00 - — v 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 2 Time (hrs) 13 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 3 Pond 10 Routing Hydrograph type = Reservoir Peak discharge = 2.549 cfs Storm frequency = 10 yrs Time to peak = 12.70 hrs Time interval = 2 min Hyd. volume = 51,457 cuft Inflow hyd. No. = 1 - DA10 (POND 10) Max. Elevation = 372.94 ft Reservoir name = Pond 10 Max. Storage = 52,558 cuft Storage Indication method used Wet pond routing start elevation=371 00 ft Pond_10 Routing Q (cfs) Hyd. No. 3-- 10 Year Q (cfs) 15.00 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 0.00 0.00 0 8 16 24 32 40 48 56 64 72 Time (hrs) Hyd No. 3 Hyd No. 1 Total storage used = 52,558 cuft 14 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 4 Combined Outflow to P0I-10 Hydrograph type = Combine Peak discharge = 4.690 cfs Storm frequency = 10 yrs Time to peak = 12.03 hrs Time interval = 2 min Hyd. volume = 64,001 cuft Inflow hyds. = 2, 3 Contrib. drain. area = 2.220 ac Combined Outflow to P0I-10 Q (cfs) Hyd. No. 4-- 10 Year Q (cfs) 5.00 5.00 4.00 4.00 3.00 I 3.00 2.00 2.00 1.00 1.00 0.00 0.00 0 6 12 18 24 30 36 42 48 54 60 66 Time (hrs) Hyd No. 4 Hyd No. 2 Hyd No. 3 15 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 1 DA10 (POND 10) Hydrograph type = SCS Runoff Peak discharge = 36.04 cfs Storm frequency = 100 yrs Time to peak = 12.10 hrs Time interval = 2 min Hyd. volume = 124,923 cuft Drainage area = 7.400 ac Curve number = 64 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 20.80 min Total precip. = 8.97 in Distribution = Type Il Storm duration = 24 hrs Shape factor = 484 DA10 (POND 10) Q(cfs) Hyd. No. 1 -- 100 Year Q (cfs) 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 \- -- 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 1 Time (hrs) 16 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 2 DA10 - UNDETAINED Hydrograph type = SCS Runoff Peak discharge = 12.59 cfs Storm frequency = 100 yrs Time to peak = 12.00 hrs Time interval = 2 min Hyd. volume = 32,865 cuft Drainage area = 2.220 ac Curve number = 59* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 12.50 min Total precip. = 8.97 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(3.070 x 56)+(0.600 x 61)]/2.220 DA10 - UNDETAINED Q (cfs) Hyd. No. 2-- 100 Year 0 (cfs) 14.00 14.00 12.00 12.00 10.00 10.00 8.00 8.00 6.00 6.00 4.00 4.00 2.00 2.00 0.00 - - 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 2 Time (hrs) 17 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,09/21 /2018 Hyd. No. 3 Pond 10 Routing Hydrograph type = Reservoir Peak discharge = 27.87 cfs Storm frequency = 100 yrs Time to peak = 12.23 hrs Time interval = 2 min Hyd. volume = 124,596 cuft Inflow hyd. No. = 1 - DA10 (POND 10) Max. Elevation = 373.76 ft Reservoir name = Pond 10 Max. Storage = 64,853 cuft Storage Indication method used. Wet pond routing start elevation=371.00 ft. Pond_10 Routing Q (cfs) Hyd. No. 3-- 100 Year Q (cfs) 40.00 40.00 30.00 30.00 20.00 20.00 I 10.00 10.00 0.00 - - 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No. 3 Hyd No. 1 Total storage used = 64,853 cuft 18 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,09/21 /2018 Hyd. No. 4 Combined Outflow to P0I-10 Hydrograph type = Combine Peak discharge = 31.42 cfs Storm frequency = 100 yrs Time to peak = 12.23 hrs Time interval = 2 min Hyd. volume = 157,461 cuft Inflow hyds. = 2, 3 Contrib. drain. area = 2.220 ac Combined Outflow to P0I-10 Q(cfs) Hyd. No. 4-- 100 Year Q (cfs) 35.00 35.00 30.00 30.00 25.00 25.00 20.00 20.00 15.00 15.00 10.00 10.00 II 5.00 5.00 0.00 - 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No. 4 Hyd No. 2 Hyd No. 3