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HomeMy WebLinkAboutSD-23-08 - Supplemental - 1170 1180 Dorset Street (9)WQV WQV 3P FOREBAY GW-WQV1 GW WQV Routing Diagram for 2019-17 - HydroCAD-BWCPrepared by {enter your company name here}, Printed 5/5/2023 HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link Type II 24-hr WQv Rainfall=1.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 2HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment WQV: WQV Runoff = 3.45 cfs @ 11.96 hrs, Volume= 0.155 af, Depth= 0.50" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr WQv Rainfall=1.00" Area (ac) CN Description * 3.700 94 3.700 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment WQV: WQV Runoff Hydrograph Time (hours) 12011511010510095908580757065605550454035302520151050Flow (cfs)3 2 1 0 Type II 24-hr WQv Rainfall=1.00" Runoff Area=3.700 ac Runoff Volume=0.155 af Runoff Depth=0.50" Tc=5.0 min CN=94 3.45 cfs Type II 24-hr WQv Rainfall=1.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 3HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: FOREBAY Inflow Area = 3.700 ac, 0.00% Impervious, Inflow Depth = 0.50" for WQv event Inflow = 3.45 cfs @ 11.96 hrs, Volume= 0.155 af Outflow = 3.42 cfs @ 11.97 hrs, Volume= 0.124 af, Atten= 1%, Lag= 0.5 min Primary = 3.42 cfs @ 11.97 hrs, Volume= 0.124 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 403.14' @ 11.97 hrs Surf.Area= 1,099 sf Storage= 1,519 cf Plug-Flow detention time= 121.5 min calculated for 0.124 af (80% of inflow) Center-of-Mass det. time= 36.8 min ( 865.5 - 828.7 ) Volume Invert Avail.Storage Storage Description #1 401.00' 2,618 cf FOREBAY (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 401.00 357 0 0 402.00 669 513 513 403.00 1,038 854 1,367 404.00 1,464 1,251 2,618 Device Routing Invert Outlet Devices #1 Primary 403.00'25.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=3.41 cfs @ 11.97 hrs HW=403.14' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 3.41 cfs @ 0.96 fps) Type II 24-hr WQv Rainfall=1.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 4HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Pond 3P: FOREBAY Inflow Primary Hydrograph Time (hours)12011511010510095908580757065605550454035302520151050Flow (cfs)3 2 1 0 Inflow Area=3.700 ac Peak Elev=403.14' Storage=1,519 cf 3.45 cfs3.42 cfs Type II 24-hr WQv Rainfall=1.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 5HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Pond GW-WQV1: GW WQV Inflow Area = 3.700 ac, 0.00% Impervious, Inflow Depth = 0.40" for WQv event Inflow = 3.42 cfs @ 11.97 hrs, Volume= 0.124 af Outflow = 0.06 cfs @ 16.97 hrs, Volume= 0.124 af, Atten= 98%, Lag= 300.1 min Primary = 0.06 cfs @ 16.97 hrs, Volume= 0.124 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 399.73' @ 16.97 hrs Surf.Area= 2,373 sf Storage= 3,199 cf Plug-Flow detention time= 617.7 min calculated for 0.124 af (100% of inflow) Center-of-Mass det. time= 617.7 min ( 1,483.2 - 865.5 ) Volume Invert Avail.Storage Storage Description #1 398.00' 6,745 cf GRAVEL WETLAND (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 398.00 1,349 0 0 399.00 1,917 1,633 1,633 400.00 2,542 2,230 3,863 401.00 3,223 2,883 6,745 Device Routing Invert Outlet Devices #1 Primary 397.00'1.2" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.06 cfs @ 16.97 hrs HW=399.73' (Free Discharge) 1=Orifice/Grate (Orifice Controls 0.06 cfs @ 7.88 fps) Type II 24-hr WQv Rainfall=1.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 6HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Pond GW-WQV1: GW WQV Inflow Primary Hydrograph Time (hours)12011511010510095908580757065605550454035302520151050Flow (cfs)3 2 1 0 Inflow Area=3.700 ac Peak Elev=399.73' Storage=3,199 cf 3.42 cfs 0.06 cfs 1S POI1 - 1YR PRE 3S POI1 - 1YR POST 5P DP 1YR FB FOREBAY Routing Diagram for 2019-17 - HydroCAD-BWCPrepared by {enter your company name here}, Printed 5/5/2023 HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link Type II 24-hr 1-year Rainfall=1.89"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 3HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: POI1 - 1YR PRE Runoff = 3.53 cfs @ 11.98 hrs, Volume= 0.165 af, Depth= 0.54" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 1-year Rainfall=1.89" Area (ac) CN Description * 3.700 81 3.700 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.6 Direct Entry, Subcatchment 1S: POI1 - 1YR PRE Runoff Hydrograph Time (hours) 12011511010510095908580757065605550454035302520151050Flow (cfs)3 2 1 0 Type II 24-hr 1-year Rainfall=1.89" Runoff Area=3.700 ac Runoff Volume=0.165 af Runoff Depth=0.54" Tc=5.6 min CN=81 3.53 cfs Type II 24-hr 1-year Rainfall=1.89"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 4HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 3S: POI1 - 1YR POST Runoff = 7.14 cfs @ 11.95 hrs, Volume= 0.309 af, Depth= 1.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 1-year Rainfall=1.89" Area (ac) CN Description * 3.700 90 3.700 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.8 Direct Entry, Subcatchment 3S: POI1 - 1YR POST Runoff Hydrograph Time (hours) 12011511010510095908580757065605550454035302520151050Flow (cfs)7 6 5 4 3 2 1 0 Type II 24-hr 1-year Rainfall=1.89" Runoff Area=3.700 ac Runoff Volume=0.309 af Runoff Depth=1.00" Tc=3.8 min CN=90 7.14 cfs Type II 24-hr 1-year Rainfall=1.89"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 5HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Pond 5P: DP 1YR Inflow Area = 3.700 ac, 0.00% Impervious, Inflow Depth = 0.90" for 1-year event Inflow = 7.09 cfs @ 11.95 hrs, Volume= 0.277 af Outflow = 0.07 cfs @ 24.01 hrs, Volume= 0.277 af, Atten= 99%, Lag= 723.4 min Primary = 0.07 cfs @ 24.01 hrs, Volume= 0.277 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 400.03' @ 24.01 hrs Surf.Area= 5,427 sf Storage= 9,254 cf Plug-Flow detention time= 1,564.1 min calculated for 0.277 af (100% of inflow) Center-of-Mass det. time= 1,564.2 min ( 2,407.6 - 843.3 ) Volume Invert Avail.Storage Storage Description #1 398.00' 6,745 cf GRAVEL WETLAND (Prismatic) Listed below (Recalc) #2 397.00' 8,392 cf DRY POND (Prismatic) Listed below (Recalc) 15,137 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 398.00 1,349 0 0 399.00 1,917 1,633 1,633 400.00 2,542 2,230 3,863 401.00 3,223 2,883 6,745 Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 397.00 0 0 0 398.00 1,596 798 798 399.00 2,188 1,892 2,690 400.00 2,837 2,513 5,203 401.00 3,542 3,190 8,392 Device Routing Invert Outlet Devices #1 Primary 397.00'1.2" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.07 cfs @ 24.01 hrs HW=400.03' (Free Discharge) 1=Orifice/Grate (Orifice Controls 0.07 cfs @ 8.32 fps) Type II 24-hr 1-year Rainfall=1.89"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 6HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Pond 5P: DP 1YR Inflow Primary Hydrograph Time (hours)12011511010510095908580757065605550454035302520151050Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=3.700 ac Peak Elev=400.03' Storage=9,254 cf 7.09 cfs 0.07 cfs Type II 24-hr 1-year Rainfall=1.89"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 7HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Pond FB: FOREBAY Inflow Area = 3.700 ac, 0.00% Impervious, Inflow Depth = 1.00" for 1-year event Inflow = 7.14 cfs @ 11.95 hrs, Volume= 0.309 af Outflow = 7.09 cfs @ 11.95 hrs, Volume= 0.277 af, Atten= 1%, Lag= 0.4 min Primary = 7.09 cfs @ 11.95 hrs, Volume= 0.277 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 403.23' @ 11.95 hrs Surf.Area= 1,136 sf Storage= 1,618 cf Plug-Flow detention time= 71.3 min calculated for 0.277 af (90% of inflow) Center-of-Mass det. time= 19.5 min ( 843.3 - 823.8 ) Volume Invert Avail.Storage Storage Description #1 401.00' 2,618 cf FOREBAY (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 401.00 357 0 0 402.00 669 513 513 403.00 1,038 854 1,367 404.00 1,464 1,251 2,618 Device Routing Invert Outlet Devices #1 Primary 403.00'25.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=7.06 cfs @ 11.95 hrs HW=403.23' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 7.06 cfs @ 1.22 fps) Type II 24-hr 1-year Rainfall=1.89"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 8HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Pond FB: FOREBAY Inflow Primary Hydrograph Time (hours)12011511010510095908580757065605550454035302520151050Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=3.700 ac Peak Elev=403.23' Storage=1,618 cf 7.14 cfs7.09 cfs 6S POI1 - 10YR POST 17S POI1 - 10YR PRE 1P FOREBAY 2P DP 10YR Routing Diagram for 2019-17 - HydroCAD-BWCPrepared by {enter your company name here}, Printed 5/5/2023 HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link Type II 24-hr 10-year Rainfall=3.23"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 2HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 6S: POI1 - 10YR POST Runoff = 14.52 cfs @ 11.95 hrs, Volume= 0.650 af, Depth= 2.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 10-year Rainfall=3.23" Area (ac) CN Description * 3.700 89 3.700 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment 6S: POI1 - 10YR POST Runoff Hydrograph Time (hours) 12011511010510095908580757065605550454035302520151050Flow (cfs)16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 10-year Rainfall=3.23" Runoff Area=3.700 ac Runoff Volume=0.650 af Runoff Depth=2.11" Tc=4.0 min CN=89 14.52 cfs Type II 24-hr 10-year Rainfall=3.23"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 3HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 17S: POI1 - 10YR PRE Runoff = 9.67 cfs @ 11.97 hrs, Volume= 0.439 af, Depth= 1.43" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 10-year Rainfall=3.23" Area (ac) CN Description * 3.700 80 3.700 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.4 Direct Entry, Subcatchment 17S: POI1 - 10YR PRE Runoff Hydrograph Time (hours) 12011511010510095908580757065605550454035302520151050Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 10-year Rainfall=3.23" Runoff Area=3.700 ac Runoff Volume=0.439 af Runoff Depth=1.43" Tc=5.4 min CN=80 9.67 cfs Type II 24-hr 10-year Rainfall=3.23"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 4HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1P: FOREBAY Inflow Area = 3.700 ac, 0.00% Impervious, Inflow Depth = 2.11" for 10-year event Inflow = 14.52 cfs @ 11.95 hrs, Volume= 0.650 af Outflow = 14.44 cfs @ 11.95 hrs, Volume= 0.619 af, Atten= 1%, Lag= 0.3 min Primary = 14.44 cfs @ 11.95 hrs, Volume= 0.619 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 403.37' @ 11.95 hrs Surf.Area= 1,194 sf Storage= 1,776 cf Plug-Flow detention time= 41.4 min calculated for 0.619 af (95% of inflow) Center-of-Mass det. time= 13.6 min ( 819.4 - 805.8 ) Volume Invert Avail.Storage Storage Description #1 401.00' 2,618 cf FOREBAY (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 401.00 357 0 0 402.00 669 513 513 403.00 1,038 854 1,367 404.00 1,464 1,251 2,618 Device Routing Invert Outlet Devices #1 Primary 403.00'25.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=14.40 cfs @ 11.95 hrs HW=403.37' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 14.40 cfs @ 1.57 fps) Type II 24-hr 10-year Rainfall=3.23"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 5HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Pond 1P: FOREBAY Inflow Primary Hydrograph Time (hours)12011511010510095908580757065605550454035302520151050Flow (cfs)16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.700 ac Peak Elev=403.37' Storage=1,776 cf 14.52 cfs14.44 cfs Type II 24-hr 10-year Rainfall=3.23"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 6HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: DP 10YR Inflow Area = 3.700 ac, 0.00% Impervious, Inflow Depth = 2.01" for 10-year event Inflow = 14.44 cfs @ 11.95 hrs, Volume= 0.619 af Outflow = 4.39 cfs @ 12.06 hrs, Volume= 0.619 af, Atten= 70%, Lag= 6.5 min Primary = 4.39 cfs @ 12.06 hrs, Volume= 0.619 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 400.58' @ 12.06 hrs Surf.Area= 6,187 sf Storage= 12,437 cf Plug-Flow detention time= 785.1 min calculated for 0.619 af (100% of inflow) Center-of-Mass det. time= 785.3 min ( 1,604.7 - 819.4 ) Volume Invert Avail.Storage Storage Description #1 398.00' 6,745 cf GRAVEL WETLAND (Prismatic) Listed below (Recalc) #2 397.00' 8,392 cf DRY POND (Prismatic) Listed below (Recalc) 15,137 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 398.00 1,349 0 0 399.00 1,917 1,633 1,633 400.00 2,542 2,230 3,863 401.00 3,223 2,883 6,745 Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 397.00 0 0 0 398.00 1,596 798 798 399.00 2,188 1,892 2,690 400.00 2,837 2,513 5,203 401.00 3,542 3,190 8,392 Device Routing Invert Outlet Devices #1 Primary 397.00'1.2" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #2 Primary 400.10'24.0" W x 8.0" H Vert. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=4.38 cfs @ 12.06 hrs HW=400.58' (Free Discharge) 1=Orifice/Grate (Orifice Controls 0.07 cfs @ 9.05 fps) 2=Orifice/Grate (Orifice Controls 4.31 cfs @ 2.23 fps) Type II 24-hr 10-year Rainfall=3.23"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 7HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Pond 2P: DP 10YR Inflow Primary Hydrograph Time (hours)12011511010510095908580757065605550454035302520151050Flow (cfs)16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.700 ac Peak Elev=400.58' Storage=12,437 cf 14.44 cfs 4.39 cfs 2S POI1 - 25YR POST 4S POI1 - 25YR PRE 6P FOREBAY 7P DP 25YR Routing Diagram for 2019-17 - HydroCAD-BWCPrepared by {enter your company name here}, Printed 5/5/2023 HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link Type II 24-hr 25-year Rainfall=4.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 2HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 2S: POI1 - 25YR POST Runoff = 19.10 cfs @ 11.95 hrs, Volume= 0.870 af, Depth= 2.82" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 25-year Rainfall=4.00" Area (ac) CN Description * 3.700 89 3.700 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment 2S: POI1 - 25YR POST Runoff Hydrograph Time (hours) 12011511010510095908580757065605550454035302520151050Flow (cfs)21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 25-year Rainfall=4.00" Runoff Area=3.700 ac Runoff Volume=0.870 af Runoff Depth=2.82" Tc=4.0 min CN=89 19.10 cfs Type II 24-hr 25-year Rainfall=4.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 3HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 4S: POI1 - 25YR PRE Runoff = 13.78 cfs @ 11.97 hrs, Volume= 0.630 af, Depth= 2.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 25-year Rainfall=4.00" Area (ac) CN Description * 3.700 80 3.700 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.4 Direct Entry, Subcatchment 4S: POI1 - 25YR PRE Runoff Hydrograph Time (hours) 12011511010510095908580757065605550454035302520151050Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 25-year Rainfall=4.00" Runoff Area=3.700 ac Runoff Volume=0.630 af Runoff Depth=2.04" Tc=5.4 min CN=80 13.78 cfs Type II 24-hr 25-year Rainfall=4.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 4HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Pond 6P: FOREBAY Inflow Area = 3.700 ac, 0.00% Impervious, Inflow Depth = 2.82" for 25-year event Inflow = 19.10 cfs @ 11.95 hrs, Volume= 0.870 af Outflow = 19.01 cfs @ 11.95 hrs, Volume= 0.839 af, Atten= 0%, Lag= 0.3 min Primary = 19.01 cfs @ 11.95 hrs, Volume= 0.839 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 403.44' @ 11.95 hrs Surf.Area= 1,225 sf Storage= 1,864 cf Plug-Flow detention time= 33.8 min calculated for 0.839 af (96% of inflow) Center-of-Mass det. time= 12.3 min ( 809.8 - 797.5 ) Volume Invert Avail.Storage Storage Description #1 401.00' 2,618 cf FOREBAY (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 401.00 357 0 0 402.00 669 513 513 403.00 1,038 854 1,367 404.00 1,464 1,251 2,618 Device Routing Invert Outlet Devices #1 Primary 403.00'25.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=18.97 cfs @ 11.95 hrs HW=403.44' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 18.97 cfs @ 1.73 fps) Type II 24-hr 25-year Rainfall=4.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 5HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Pond 6P: FOREBAY Inflow Primary Hydrograph Time (hours)12011511010510095908580757065605550454035302520151050Flow (cfs)21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.700 ac Peak Elev=403.44' Storage=1,864 cf 19.10 cfs19.01 cfs Type II 24-hr 25-year Rainfall=4.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 6HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Summary for Pond 7P: DP 25YR Inflow Area = 3.700 ac, 0.00% Impervious, Inflow Depth = 2.72" for 25-year event Inflow = 19.01 cfs @ 11.95 hrs, Volume= 0.839 af Outflow = 12.12 cfs @ 12.02 hrs, Volume= 0.839 af, Atten= 36%, Lag= 3.8 min Primary = 12.12 cfs @ 12.02 hrs, Volume= 0.839 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 400.94' @ 12.02 hrs Surf.Area= 6,686 sf Storage= 14,752 cf Plug-Flow detention time= 587.6 min calculated for 0.839 af (100% of inflow) Center-of-Mass det. time= 587.6 min ( 1,397.4 - 809.8 ) Volume Invert Avail.Storage Storage Description #1 398.00' 6,745 cf GRAVEL WETLAND (Prismatic) Listed below (Recalc) #2 397.00' 8,392 cf DRY POND (Prismatic) Listed below (Recalc) 15,137 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 398.00 1,349 0 0 399.00 1,917 1,633 1,633 400.00 2,542 2,230 3,863 401.00 3,223 2,883 6,745 Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 397.00 0 0 0 398.00 1,596 798 798 399.00 2,188 1,892 2,690 400.00 2,837 2,513 5,203 401.00 3,542 3,190 8,392 Device Routing Invert Outlet Devices #1 Primary 397.00'1.2" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #2 Primary 400.10'24.0" W x 8.0" H Vert. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads #3 Primary 400.70'10.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=12.09 cfs @ 12.02 hrs HW=400.94' (Free Discharge) 1=Orifice/Grate (Orifice Controls 0.07 cfs @ 9.50 fps) 2=Orifice/Grate (Orifice Controls 8.98 cfs @ 3.37 fps) 3=Broad-Crested Rectangular Weir (Weir Controls 3.04 cfs @ 1.26 fps) Type II 24-hr 25-year Rainfall=4.00"2019-17 - HydroCAD-BWC Printed 5/5/2023Prepared by {enter your company name here} Page 7HydroCAD® 10.10-4b s/n 05093 © 2020 HydroCAD Software Solutions LLC Pond 7P: DP 25YR Inflow Primary Hydrograph Time (hours)12011511010510095908580757065605550454035302520151050Flow (cfs)21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.700 ac Peak Elev=400.94' Storage=14,752 cf 19.01 cfs 12.12 cfs