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WPO201900004 Calculations 2019-08-29
VIRGINIA STORMWATER MANAGMENT PLAN REPORT FOR BROOKHILL WP020 1900004 Section 1 , Block 8A Senior Living Facility Seminole Trail and Polo Grounds Road Charlottesville,Albemarle County,VA BY BOHLER ENGINEERING 28 Blackwell Park Lane Suite 201 Warrenton,VA 20186 BE#V182023 �p..TH pF August 29,2019 Ct� 0 RYAN YAUGER .p Lic. No.0402056625 it �it► 8/29/19 G�t1�� �� Vet,S/4NAL E� Ryan T Yauger, P.E. Seal Project Manager APPROVED by the Albemarle County Community Develop f Department Date File v-'P 0 2,0 l 0 0 0 TABLE OF CONTENTS Watershed Model Schematic 1 Hydrograph Reports 2-48 Watershed Model Schematic HydraflowHydrographsExtensionforAutodesk®Civil3D®2019byAutodesk, Inc.v2020 ‘ -,.,\111;111111/ tt3 1;1 oke8 401 Legend Ha Origin Description 1 SCS Runoff DA11 -UNDETAINED 2 SCS Runoff ROW AND 4B-5(POND11) 3 SCS Runoff BLOCK 8A-4A-2-POND AREA(POND 11) 4 SCS Runoff 4A-1 (POND 11) 5 Reservoir DP-4A 6 Combine <no description> 7 Reservoir Pond 11 8 Combine <no description> 9 Reservoir Level Spreader 10 SCS Runoff Pre DA to POI-11 Project: Storm Routings Pond 11 (8A- Road -4A).gpw Tuesday, 09/3/2019 - 2 Hydrograph Summary Report„ Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk„Inc.v2020 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (cuft) (ft) (cuft) 1 SCS Runoff 3.720 2 750 32,925 — — — DA11 -UNDETAINED 2 SCS Runoff 13.06 2 716 26,478 — — — ROW AND 4B-5(POND11) 3 SCS Runoff 14.03 2 718 28,069 — — — BLOCK 8A-4A-2-POND AREA(PO 4 SCS Runoff 15.71 2 716 31,959 — — 4A-1 (POND 11) 5 Reservoir 3.056 2 726 31,448 4 432.81 11,496 DP-4A 6 Combine 29.65 2 718 85,995 2,3,5 — <no description> 7 Reservoir 1.669 2 868 85,930 6 401.35 98,605 Pond 11 8 Combine 4.926 2 750 118,856 1,7 <no description> 9 Reservoir 4.929 2 750 118,199 8 348.69 782 Level Spreader 10 SCS Runoff 10.76 2 728 56,113 — — Pre DA to POI-11 Storm Routings Pond 11 (8A- Road -4A).gpwReturn Period: 1 Year Friday, 08/30/2019 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 1 DA11 - UNDETAINED Hydrograph type = SCS Runoff Peak discharge = 3.720 cfs Storm frequency = 1 yrs Time to peak = 750 min Time interval = 2 min Hyd. volume = 32,925 cuft Drainage area = 19.200 ac Curve number = 64* 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)= +(12.900 x 58)+(3.090 x 81)+(0.610 x 61)+(2.150 x 73)+(0.450 x 61)]/19.200 DA11 - UNDETAINED Q (cfs) Hyd. No. 1 -- 1 Year Q (cfs) 4.00 4.00 3.00 3.00 2.00 2.00 1.00 1.00 0.00 I 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time(min) Hyd No. 1 - 4 , Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 2 ROW AND 4B-5 (POND11) Hydrograph type = SCS Runoff Peak discharge = 13.06 cfs Storm frequency = 1 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 26,478 cuft Drainage area = 4.680 ac Curve number = 86* 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 *Composite(Area/CN)=[(4.150 x 89)+(0.530 x 67)]/4.680 ROW AND 4B-5 (POND11) Q (cfs) Hyd. No. 2-- 1 Year Q (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 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 Hyd No. 2 Time(min) 5 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 3 BLOCK 8A - 4A-2 - POND AREA (POND 11) Hydrograph type = SCS Runoff Peak discharge = 14.03 cfs Storm frequency = 1 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 28,069 cuft Drainage area = 6.940 ac Curve number = 79* 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 *Composite(Area/CN)=[(3.760 x 92)+(1.680 x 65)+(1.500 x 61)]/6.940 BLOCK 8A - 4A-2 - POND AREA (POND 11) 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 0.00 - J 4 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time(min) Hyd No. 3 - 6 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 4 4A-1 (POND 11) Hydrograph type = SCS Runoff Peak discharge = 15.71 cfs Storm frequency = 1 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 31,959 cuft Drainage area = 5.400 ac Curve number = 87* 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 'Composite(Area/CN)=[(5.400 x 87)]/5.400 4A-1 (POND 11) Q (cfs) Q (cfs) Hyd. No. 4-- 1 Year 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 Hyd No. 4 Time(min) Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 5 DP-4A Hydrograph type = Reservoir Peak discharge = 3.056 cfs Storm frequency = 1 yrs Time to peak = 726 min Time interval = 2 min Hyd. volume = 31,448 cuft Inflow hyd. No. = 4 -4A-1 (POND 11) Max. Elevation = 432.81 ft Reservoir name = DP-4A Max. Storage = 11,496 cuft Storage Indication method used. DP-4A Q (cfs) Hyd. No. 5-- 1 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 Time(min) Hyd No. 5 Hyd No. 4 Total storage used = 11,496 cuft Pond Report - . 8 . Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30,i 2019 - Pond No. 6- DP-4A Pond Data UG Chambers-Invert elev.=423.50 ft, Rise x Span=5.00 x 5.00 ft, Barrel Len=60.00 ft, No.Barrels=3, Slope=0.00%, Headers=No Eocisereebbery el kceT 2: sWIdttia=n6eHa M tldetfdrwalCiiMtcMoutatioplaGgrping Elevation=430.00 ft Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0.00 422.50 n/a 0 0 0.70 423.20 n/a 340 340 1.40 423.90 n/a 413 754 2.10 424.60 n/a 584 1,338 2.80 425.30 n/a 653 1,991 3.50 426.00 n/a 682 2,674 4.20 426.70 n/a 682 3,356 4.90 427.40 n/a 653 4,009 5.60 428.10 n/a 584 4,594 6.30 428.80 n/a 413 5,007 7.00 429.50 n/a 340 5,347 7.50 430.00 367 61 5,408 8.50 431.00 1,532 883 6,291 9.50 432.00 3,152 2,294 8,585 10.50 433.00 4,126 3,628 12,212 11.50 434.00 5,158 4,632 16,844 12.50 435.00 6,254 5,697 22,541 13.50 436.00 7,226 6,733 29,274 14.50 437.00 8,355 7,783 37,057 Culvert/Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 24.00 6.00 9.00 0.00 Crest Len(ft) = 20.00 Inactive Inactive 0.00 Span(in) = 24.00 6.00 30.00 0.00 Crest El.(ft) = 434.25 434.00 432.75 0.00 No.Barrels = 1 1 2 0 Weir Coeff. = 3.33 3.33 3.33 3.33 Invert El.(ft) = 422.00 423.50 432.75 0.00 Weir Type = 1 Rect Rect --- Length(ft) = 63.90 0.00 0.00 0.00 Multi-Stage = Yes Yes Yes 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 Wet area) 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(ft) Stage/Discharge Elev(ft) 15.00 437.50 12.00 - - 434.50 9.00 - 431.50 6.00 428.50 3.00 425.50 0.00 422.50 0.00 6.00 12.00 18.00 24.00 30.00 36.00 42.00 48.00 54.00 60.00 Total Q Discharge(cfs) Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 6 <no description> Hydrograph type = Combine Peak discharge = 29.65 cfs Storm frequency = 1 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 85,995 cuft Inflow hyds. = 2, 3, 5 Contrib. drain. area = 11.620 ac <no description> Q (cfs) Hyd. No. 6-- 1 Year Q (cfs) 30.00 30.00 25.00 25.00 20.00 20.00 15.00 15.00 10.00 10.00 5.00 5.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time (min) Hyd No. 6 Hyd No. 2 Hyd No. 3 Hyd No. 5 -40 Hydrograph Report • Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 • Hyd. No. 7 Pond 11 Hydrograph type = Reservoir Peak discharge = 1.669 cfs Storm frequency = 1 yrs Time to peak = 868 min Time interval = 2 min Hyd. volume = 85,930 cuft Inflow hyd. No. = 6 - <no description> Max. Elevation = 401.35 ft Reservoir name = Pond 11 Max. Storage = 98,605 cuft Storage Indication method used. Wet pond routing start elevation=399.00 ft. Pond 11 Q(cfs) Hyd. No. 7-- 1 Year Q (cfs) 30.00 30.00 25.00 25.00 20.00 20.00 15.00 15.00 10.00 10.00 5.00 5.00 0.00 0.00 0 360 720 1080 1440 1800 2160 2520 2880 3240 3600 Time(min) Hyd No. 7 Hyd No. 6 Total storage used = 98,605 cuft • Pond Report Hydrnflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 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 I 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 6.00 6.00 0.00 Crest Len(ft) = 32.00 16.00 20.00 0.00 Span(in) = 60.00 6.00 6.00 0.00 Crest El.(ft) = 402.75 401.50 403.25 0.00 No.Barrels = 1 1 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/Orifice outflows are analyzed under inlet(ic)and outlet(oc)control.Weir nsers checked for orifice conditions(ic)and submergence(s). Stage(ft) Stage/Discharge Elev(ft) 15.00 404.00 12.00 401.00 9.00 398.00 6.00 395.00 3.00 392.00 0.00 389.00 0.0 30.0 60.0 90.0 120.0 150.0 180.0 210.0 240.0 270.0 300.0 330.0 Discharge(cfs) Total Q -12 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 8 <no description> Hydrograph type = Combine Peak discharge = 4.926 cfs Storm frequency = 1 yrs Time to peak = 750 min Time interval = 2 min Hyd. volume = 118,856 cuft Inflow hyds. = 1, 7 Contrib. drain. area = 19.200 ac <no description> Q (cfs) Hyd. No. 8-- 1 Year Q (cfs) 5.00 5.00 4.00 4.00 3.00 3.00 2.00 2.00 11111111114 1.00 1.00 0.00 lb , 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 2400 2640 Time(min) Hyd No. 8 Hyd No. 1 Hyd No. 7 13 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 9 Level Spreader Hydrograph type = Reservoir Peak discharge = 4.929 cfs Storm frequency = 1 yrs Time to peak = 750 min Time interval = 2 min Hyd. volume = 118,199 cuft Inflow hyd. No. = 8 - <no description> Max. Elevation = 348.69 ft Reservoir name = Level Spreader Max. Storage = 782 cuft Storage Indication method used. Level Spreader Q (cfs) Hyd. No. 9 -- 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 — 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 2400 2640 Time (min) Hyd No. 9 Hyd No. 8 Total storage used = 782 cuft Pond Report -1,4 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/301'2019 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 I 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.(in/hr) = 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(ic)and outlet(oc)control.Weir risers checked for orifice conditions(ic)and submergence(s). Stage(ft) Stage/Discharge Elev(ft) 4.00 I - 351.00 3.00 350.00 2.00 349.00 1.00 348.00 0.00 347.00 0.0 80.0 160.0 240.0 320.0 400.0 480.0 560.0 640.0 720.0 800.0 Total Q Discharge(cfs) lb Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 • Hyd. No. 10 Pre DA to P01 - 11 Hydrograph type = SCS Runoff Peak discharge = 10.76 cfs Storm frequency = 1 yrs Time to peak = 728 min Time interval = 2 min Hyd. volume = 56,113 cuft Drainage area = 42.340 ac Curve number = 61* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 16.80 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(16.970 x 63)+(20.180 x 60)+(5.190 x 60)]/42.340 Pre DAto POI - 11 Q (cfs) Hyd. No. 10-- 1 Year Q (cfs) 12.00 12.00 10.00 I 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 Time (min) Hyd No. 10 - 16 Hydrograph Summary Report ydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (cuft) (ft) (cuft) 1 SCS Runoff 7.111 2 748 53,846 ----- ----- DA11 -UNDETAINED 2 SCS Runoff 17.18 2 716 35,116 --- ----- -- ROW AND 4B-5(POND11) 3 SCS Runoff 19.46 2 718 39,200 -- ---- — BLOCK 8A-4A-2-POND AREA(PO 4 SCS Runoff 20.50 2 716 42,094 -- ----- 4A-1 (POND 11) 5 Reservoir 10.53 2 722 41,583 4 433.34 13,755 DP-4A 6 Combine 40.69 2 718 115,899 2,3,5 --- <no description> 7 Reservoir 4.576 2 782 115,829 6 401.63 105,739 Pond 11 8 Combine 10.29 2 764 169,675 1,7 <no description> 9 Reservoir 10.29 2 764 169,018 8 348.75 815 Level Spreader 10 SCS Runoff 23.44 2 726 96,455 — --- — Pre DA to POI-11 Storm Routings Pond 11 (8A- Road -4A).gpwReturn Period: 2 Year Friday, 08/30/2019 11 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 1 DA11 - UNDETAINED Hydrograph type = SCS Runoff Peak discharge = 7.111 cfs Storm frequency = 2 yrs Time to peak = 748 min Time interval = 2 min Hyd. volume = 53,846 cuft Drainage area = 19.200 ac Curve number = 64* 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)= +(12.900 x 58)+(3.090 x 81)+(0.610 x 61)+(2.150 x 73)+(0.450 x 61)1/19.200 DA11 - UNDETAINED Q )cfs Q (cfs) ( Hyd. No. 1 --2 Year 8.00 8.00 1 6.00 6.00 4.00 4.00 1 2.00 2.00 0.00 -- 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time(min) Hyd No. 1 .18 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30./2019 Hyd. No. 2 ROW AND 4B-5 (POND11) Hydrograph type = SCS Runoff Peak discharge = 17.18 cfs Storm frequency = 2 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 35,116 cult Drainage area = 4.680 ac Curve number = 86* 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 *Composite(Area/CN)=[(4.150 x 89)+(0.530 x 67)]/4.680 ROW AND 4B-5 (POND11) Q (cfs) cfs Q Hyd. No. 2--2 Year (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 Hyd No. 2 Time(min) Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 3 BLOCK 8A - 4A-2 - POND AREA (POND 11) Hydrograph type = SCS Runoff Peak discharge = 19.46 cfs Storm frequency = 2 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 39,200 cuft Drainage area = 6.940 ac Curve number = 79* 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 *Composite(Area/CN)=[(3.760 x 92)+(1.680 x 65)+(1.500 x 61)]/6.940 BLOCK 8A- 4A-2 - POND AREA (POND 11) Q )cfs Q (cfs) ( Hyd. No. 3--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 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time(min) Hyd No. 3 -20 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 1 • Hyd. No. 4 4A-1 (POND 11) Hydrograph type = SCS Runoff Peak discharge = 20.50 cfs Storm frequency = 2 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 42,094 cuft Drainage area = 5.400 ac Curve number = 87* 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 *Composite(Area/CN)=[(5.400 x 87)]/5.400 4A-1 (POND 11) Q (cfs) cfs Q Hyd. No. 4--2 Year (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 Hyd No. 4 Time(min) • 19 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 5 DP-4A Hydrograph type = Reservoir Peak discharge = 10.53 cfs Storm frequency = 2 yrs Time to peak = 722 min Time interval = 2 min Hyd. volume = 41,583 cuft Inflow hyd. No. = 4 - 4A-1 (POND 11) Max. Elevation = 433.34 ft Reservoir name = DP-4A Max. Storage = 13,755 cuft Storage Indication method used. DP-4A Q (cfs) Hyd. No. 5--2 Year Q (cfs) 21.00 i 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. 4 Total storage used = 13,755 cuft •22 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 6 <no description> Hydrograph type = Combine Peak discharge = 40.69 cfs Storm frequency = 2 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 115,899 cuft Inflow hyds. = 2, 3, 5 Contrib. drain. area = 11.620 ac <no description> Q (cfs) Hyd. No. 6--2 Year Q (cfs) 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. 6 Hyd No. 2 Hyd No. 3 Hyd No. 5 • 23 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 7 Pond 11 Hydrograph type = Reservoir Peak discharge = 4.576 cfs Storm frequency = 2 yrs Time to peak = 782 min Time interval = 2 min Hyd. volume = 115,829 cuft Inflow hyd. No. = 6 - <no description> Max. Elevation = 401.63 ft Reservoir name = Pond 11 Max. Storage = 105,739 cuft Storage Indication method used. Wet pond routing start elevation=399.00 ft. Pond 11 Q (cfs) Hyd. No. 7 -- 2 Year Q (cfs) 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 2640 Time (min) Hyd No. 7 Hyd No. 6 Total storage used = 105,739 cuft •24 . Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30'/2019 Hyd. No. 8 <no description> Hydrograph type = Combine Peak discharge = 10.29 cfs Storm frequency = 2 yrs Time to peak = 764 min Time interval = 2 min Hyd. volume = 169,675 cuft Inflow hyds. = 1, 7 Contrib. drain. area = 19.200 ac <no description> Q (cfs) Hyd. No. 8--2 Year Q (cfs) 12.00 12.00 10.00 10.00 1 8.00 8.00 6.00 6.00 4.00 I 4.00 2.00 2.00 jr\***4.1%.-------- 0.00 - \ 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 2400 Time(min) Hyd No. 8 Hyd No. 1 Hyd No. 7 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 9 Level Spreader Hydrograph type = Reservoir Peak discharge = 10.29 cfs Storm frequency = 2 yrs Time to peak = 764 min Time interval = 2 min Hyd. volume = 169,018 cuft Inflow hyd. No. = 8 - <no description> Max. Elevation = 348.75 ft Reservoir name = Level Spreader Max. Storage = 815 cuft Storage Indication method used. Level Spreader Q (cfs) Q (cfs) Hyd. No. 9 -- 2 Year 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 0 240 480 720 960 1200 1440 1680 1920 2160 2400 Time (min) Hyd No. 9 Hyd No. 8 Total storage used = 815 cult •26 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 10 Pre DAto POI - 11 Hydrograph type = SCS Runoff Peak discharge = 23.44 cfs Storm frequency = 2 yrs Time to peak = 726 min Time interval = 2 min Hyd. volume = 96,455 cuft Drainage area = 42.340 ac Curve number = 61* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 16.80 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(16.970 x 63)+(20.180 x 60)+(5.190 x 60)]/42.340 Pre DAto POI - 11 Q (cfs) Q (cfs) Hyd. No. 10--2 Year 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. 10 Time(min) . LI Hydrograph Summary Re p o rtHydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 H'yd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (cult) (ft) (cuft) 1 SCS Runoff 20.86 2 746 133,006 — — — DA11 -UNDETAINED 2 SCS Runoff 29.66 2 716 62,238 — — — ROW AND 4B-5(POND11) 3 SCS Runoff 37.23 2 716 75,820 — — — BLOCK 8A-4A-2-POND AREA(PO 4 SCS Runoff 34.91 2 716 73,726 — --- ---- 4A-1 (POND 11) 5 Reservoir 25.66 2 720 73,215 4 434.37 18,927 DP-4A 6 Combine 87.49 2 718 211,273 2,3,5 — <no description> 7 Reservoir 45.58 2 724 211,194 6 402.38 126,189 Pond 11 8 Combine 55.15 2 724 344,200 1,7 <no description> 9 Reservoir 55.21 2 724 343,543 8 349.04 989 Level Spreader 10 SCS Runoff 76.55 2 726 255,079 — Pre DA to POI-11 Storm Routings Pond 11 (8A- Road -4A).gpwReturn Period: 10 Year Friday, 08/30/2019 •28 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 1 DA11 - UNDETAINED Hydrograph type = SCS Runoff Peak discharge = 20.86 cfs Storm frequency = 10 yrs Time to peak = 746 min Time interval = 2 min Hyd. volume = 133,006 cuft Drainage area = 19.200 ac Curve number = 64* 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)= +(12.900 x 58)+(3.090 x 81)+(0.610 x 61)+(2.150 x 73)+(0.450 x 61)]/19.200 DA11 - UNDETAINED Q (cfs) Hyd. No. 1 -- 10 Year Q (cfs) 21.00 21.00 18.00 18.00 15.00 15.00 12.00 12.00 9.00 I • 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. 1 Time(min) zu Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 2 ROW AND 4B-5 (POND11) Hydrograph type = SCS Runoff Peak discharge = 29.66 cfs Storm frequency = 10 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 62,238 cuft Drainage area = 4.680 ac Curve number = 86* 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 *Composite(Area/CN)=[(4.150 x 89)+(0.530 x 67)]/4.680 ROW AND 4B-5 (POND11) Q (cfs) Hyd. No. 2 -- 10 Year Q (cfs) 30.00 30.00 25.00 25.00 20.00 20.00 15.00 15.00 10.00 10.00 5.00 5.00 0.00 _ ' 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 Time(min) Hyd No. 2 •30 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D0D 2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 3 BLOCK 8A - 4A-2 - POND AREA (POND 11) Hydrograph type = SCS Runoff Peak discharge = 37.23 cfs Storm frequency = 10 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 75,820 cuft Drainage area = 6.940 ac Curve number = 79* 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 *Composite(Area/CN)=[(3.760 x 92)+(1.680 x 65)+(1.500 x 61)]/6.940 BLOCK 8A- 4A-2 - POND AREA (POND 11) Q (cfs) Hyd. No. 3-- 10 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 Hyd No. 3 Time(min) - 31 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 4 4A-1 (POND 11) Hydrograph type = SCS Runoff Peak discharge = 34.91 cfs Storm frequency = 10 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 73,726 cuft Drainage area = 5.400 ac Curve number = 87* 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 *Composite(Area/CN)=[(5.400 x 87)]/5.400 4A-1 (POND 11) Q (cfs) Hyd. No. 4-- 10 Year Q (cfs) 35.00 35.00 30.00 I 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 0 120 240 360 480 600 720 840 960 1080 1200 Time(min) Hyd No. 4 -32 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08 I 30/2019 Hyd. No. 5 DP-4A Hydrograph type = Reservoir Peak discharge = 25.66 cfs Storm frequency = 10 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 73,215 cuft Inflow hyd. No. = 4 - 4A-1 (POND 11) Max. Elevation = 434.37 ft Reservoir name = DP-4A Max. Storage = 18,927 cuft Storage Indication method used. DP-4A Q (cfs) Hyd. No. 5-- 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 10.00 5.00 5.00 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. 4 Total storage used = 18,927 cuft ss Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 6 <no description> Hydrograph type = Combine Peak discharge = 87.49 cfs Storm frequency = 10 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 211,273 cuft Inflow hyds. = 2, 3, 5 Contrib. drain. area = 11.620 ac <no description> Q (cfs) Q (cfs) Hyd. No. 6-- 10 Year 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. 6 Hyd No. 2 Hyd No. 3 Hyd No. 5 -34 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 7 Pond 11 Hydrograph type = Reservoir Peak discharge = 45.58 cfs Storm frequency = 10 yrs Time to peak = 724 min Time interval = 2 min Hyd. volume = 211,194 cuft Inflow hyd. No. = 6 - <no description> Max. Elevation = 402.38 ft Reservoir name , = Pond 11 Max. Storage = 126,189 cuft Storage Indication method used. Wet pond routing start elevation=399.00 ft. Pond 11 Q (cfs) Hyd. No. 7-- 10 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 Time(min) Hyd No. 7 Hyd No. 6 Total storage used = 126,189 cuft 35 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 8 <no description> Hydrograph type = Combine Peak discharge = 55.15 cfs Storm frequency = 10 yrs Time to peak = 724 min Time interval = 2 min Hyd. volume = 344,200 cuft Inflow hyds. = 1, 7 Contrib. drain. area = 19.200 ac <no description> Q (cfs) Hyd. No. 8-- 10 Year Q (cfs) 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 Time(min) Hyd No. 8 Hyd No. 1 Hyd No. 7 -36 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 9 Level Spreader Hydrograph type = Reservoir Peak discharge = 55.21 cfs Storm frequency = 10 yrs Time to peak = 724 min Time interval = 2 min Hyd. volume = 343,543 cuft Inflow hyd. No. = 8 - <no description> Max. Elevation = 349.04 ft Reservoir name = Level Spreader Max. Storage = 989 cuft Storage Indication method used. Level Spreader 0 (cfs) Hyd. No. 9 -- 10 Year 0 (cfs) 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 Time (min) Hyd No. 9 - Hyd No. 8 Total storage used = 989 cuft 37 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 10 Pre DAto POI - 11 Hydrograph type = SCS Runoff Peak discharge = 76.55 cfs Storm frequency = 10 yrs Time to peak = 726 min Time interval = 2 min Hyd. volume = 255,079 cuft Drainage area = 42.340 ac Curve number = 61* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 16.80 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(16.970 x 63)+(20.180 x 60)+(5.190 x 60)]/42.340 Pre DAto POI - 11 Q (cfs) Q (cfs) Hyd. No. 10-- 10 Year 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. 10 -38 Hydrograph Summary Report, ydraflow Hydrographs Extension for Autodesk®Civil 3D0 2019 by Autodesk, ;ric.v2020 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (cuft) (ft) (cuft) 1 SCS Runoff 53.45 2 746 320,927 — — — DA11 -UNDETAINED 2 SCS Runoff 53.15 2 716 115,858 — — -- ROW AND 4B-5(POND11) 3 SCS Runoff 72.20 2 716 151,553 — — -- BLOCK 8A-4A-2-POND AREA(PO 4 SCS Runoff 61.94 2 716 135,925 — -- --- 4A-1 (POND 11) 5 Reservoir 51.99 2 720 135,414 4 435.18 23,416 DP-4A 6 Combine 176.28 2 716 402,825 2,3,5 ----- <no description> 7 Reservoir 156.43 2 720 402,737 6 403.23 152,070 Pond 11 8 Combine 178.14 2 720 723,663 1,7 <no description> 9 Reservoir 205.00 2 720 723,006 8 351.00 2,906 Level Spreader 10 SCS Runoff 204.96 2 724 645,519 — — -- Pre DA to POI-11 Storm Routings Pond 11 (8A- Road -4A).gpwReturn Period: 100 Year Friday, 08/30/2019 sy Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 1 DA11 - UNDETAINED Hydrograph type = SCS Runoff Peak discharge = 53.45 cfs Storm frequency = 100 yrs Time to peak = 746 min Time interval = 2 min Hyd. volume = 320,927 cuft Drainage area = 19.200 ac Curve number = 64* 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)= +(12.900 x 58)+(3.090 x 81)+(0.610 x 61)+(2.150 x 73)+(0.450 x 61)]/19.200 DA11 - UNDETAINED 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 Time(min) Hyd No. 1 •40 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 2 ROW AND 4B-5 (POND11) Hydrograph type = SCS Runoff Peak discharge = 53.15 cfs Storm frequency = 100 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 115,858 cult Drainage area = 4.680 ac Curve number = 86* 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 *Composite(Area/CN)=[(4.150 x 89)+(0.530 x 67)]/4.680 ROW AND 4B-5 (POND11) Q (cfs) Hyd. No. 2 -- 100 Year Q (cfs) 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 J ' 0.00 0 120 240 360 480 600 720 840 960 1080 1200 Hyd No. 2 Time(min) Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 3 BLOCK 8A - 4A-2 - POND AREA (POND 11) Hydrograph type = SCS Runoff Peak discharge = 72.20 cfs Storm frequency = 100 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 151,553 cuft Drainage area = 6.940 ac Curve number = 79* 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 'Composite(Area/CN)=[(3.760 x 92)+(1.680 x 65)+(1.500 x 61)]/6.940 BLOCK 8A - 4A-2 - POND AREA (POND 11) Q (cfs) Hyd. No. 3-- 100 Year Q (cfs) 80.00 80.00 70.00 70.00 60.00 60.00 _ 1 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 Time(min) Hyd No. 3 42 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 4 4A-1 (POND 11) Hydrograph type = SCS Runoff Peak discharge = 61.94 cfs Storm frequency = 100 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 135,925 cuft Drainage area = 5.400 ac Curve number = 87* 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 *Composite(Area/CN)=[(5.400 x 87)]/5.400 Q (cfs) 4A-1 (POND 11) Hyd. No. 4-- 100 Year Q (cfs) 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 Hyd No. 4 Time(min) 43 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 5 DP-4A Hydrograph type = Reservoir Peak discharge = 51.99 cfs Storm frequency = 100 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 135,414 cuft Inflow hyd. No. = 4 - 4A-1 (POND 11) Max. Elevation = 435.18 ft Reservoir name = DP-4A Max. Storage = 23,416 cuft Storage Indication method used. DP-4A Q (cfs) Hyd. No. 5-- 100 Year Q (cfs) 70.00 70.00 60.00 60.00 50.00 50.00 i 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 Time(min) Hyd No. 5 Hyd No. 4 Total storage used =23,416 cuft 44 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 6 <no description> Hydrograph type = Combine Peak discharge = 176.28 cfs Storm frequency = 100 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 402,825 cuft Inflow hyds. = 2, 3, 5 Contrib. drain. area = 11.620 ac <no description> Q (cfs) Hyd. No. 6-- 100 Year Q (cfs) 180.00 180.00 150.00 150.00 _ 120.00 120.00 90.00 90.00 60.00 60.00 I 30.00 I 30.00 0.00 \ 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 Time(min) Hyd No. 6 Hyd No. 2 Hyd No. 3 Hyd No. 5 40 Hycirograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 7 Pond 11 Hydrograph type = Reservoir Peak discharge = 156.43 cfs Storm frequency = 100 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 402,737 cuft Inflow hyd. No. = 6 - <no description> Max. Elevation = 403.23 ft Reservoir name = Pond 11 Max. Storage = 152,070 cuft Storage Indication method used. Wet pond routing start elevation=399.00 ft. Pond 11 Q(cfs) Hyd. No. 7-- 100 Year Q (cfs) 180.00 180.00 150.00 150.00 120.00 120.00 90.00 90.00 60.00 60.00 30.00 30.00 0.00 - 114 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time(min) Hyd No. 7 Hyd No. 6 Total storage used = 152,070 cuft 46 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc.v2020 Friday,08/30/2019 Hyd. No. 8 <no description> Hydrograph type = Combine Peak discharge = 178.14 cfs Storm frequency = 100 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 723,663 cuft Inflow hyds. = 1, 7 Contrib. drain. area = 19.200 ac <no description> Q (cfs) Hyd. No. 8-- 100 Year Q (cfs) 180.00 180.00 150.00 150.00 120.00 120.00 90.00 90.00 60.00 60.00 30.00 30.00 0.00 1111 ---m•- 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time(min) Hyd No. 8 Hyd No. 1 Hyd No. 7 47 Hydrograph Report ,Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 9 Level Spreader Hydrograph type = Reservoir Peak discharge = 205.00 cfs Storm frequency = 100 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 723,006 cult Inflow hyd. No. = 8 - <no description> Max. Elevation = 351.00 ft Reservoir name = Level Spreader Max. Storage = 2,906 cult Storage Indication method used. Lev, I Spreader Q (cfs) Hyd. N 9-- 100 Year Q (cfs) 180.00 180.00 150.00 - 150.00 120.00 120.00 90.00 90.00 60.00 60.00 30.00 30.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time(min) Hyd No. 9 Hyd No. 8 Total storage used = 2,906 cult '48 Hydrograph Report r. Y_ Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc.v2020 Friday,08/30/2019 Hyd. No. 10 Pre DAto POI - 11 Hydrograph type = SCS Runoff Peak discharge = 204.96 cfs Storm frequency = 100 yrs Time to peak = 724 min Time interval = 2 min Hyd. volume = 645,519 cuft Drainage area = 42.340 ac Curve number = 61* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 16.80 min Total precip. = 8.97 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 *Composite(Area/CN)=[(16.970 x 63)+(20.180 x 60)+(5.190 x 60)]/42.340 Pre DAto POI - 11 Q (cfs) Hyd. No. 10-- 100 Year Q (cfs) 210.00 210.00 180.00 180.00 150.00 150.00 120.00 120.00 90.00 90.00 60.00 60.00 30.00 30.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 10 Time(min)