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HomeMy WebLinkAboutWPO202200038 Calculations 2022-09-14 (14)`15S POA #3A POA#3A Diversion - STR-178 Subcat Reach Aon Llnk Breezy Poa's Prepared by HP Inc. Project Notes Defined 5 rainfall events from Albemarle Rainfall OF Printed 9/6/2022 Breezy Poa's Prepared by HP Inc. Area Listing (selected nodes) Area CN Description (acres) (subcatchment-numbers) 4.860 94 (15S) 4.860 94 TOTAL AREA Printed 9/6/2022 Breezy Poa's Prepared by HP Inc. Type/1 24-hr 1 inch Rainfall= 1. 00 " Printed 9/6/2022 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 15S: POA #3A Runoff Area=4.860 ac 0.00% Impervious Runoff Depth>0.50" Tc=10.0 min CN=94 Runoff=3.71 cfs 0.204 of Pond 21 P: POA#3A Diversion - STR-178 Peak Elev=326.12' Inflow=3.71 cfs 0.204 of Primary=3.67 cfs 0.203 of Secondary=0.04 cfs 0.000 of Outflow=3.71 cfs 0.204 of Total Runoff Area = 4.860 ac Runoff Volume = 0.204 of Average Runoff Depth = 0.50" 100.00% Pervious = 4.860 ac 0.00% Impervious = 0.000 ac Breezy Poa's Prepared by HP Inc. Type/1 24-hr 1 inch Rainfall= 1. 00 " Printed 9/6/2022 Summary for Subcatchment 15S: POA #3A Runoff = 3.71 cfs @ 12.02 hrs, Volume= 0.204 af, Depth> 0.50" Routed to Pond 21 P : POA#3A Diversion - STR-178 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 1 inch Rainfall=1.00" Area (ac) CN 4.860 94 4.860 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 15S: POA #3A Hydrograph ■ Rurwff Time (hours) Breezy Poa's Prepared by HP Inc. Type // 24-hr 1 inch Rainfall= 1. 00 " Printed 9/6/2022 Summary for Pond 21 P: POA#3A Diversion - STR-178 [57] Hint: Peaked at 326.12' (Flood elevation advised) Inflow Area = 4.860 ac, 0.00% Impervious, Inflow Depth > 0.50" for 1 inch event Inflow = 3.71 cfs @ 12.02 hrs, Volume= 0.204 of Outflow = 3.71 cfs @ 12.02 hrs, Volume= 0.204 af, Atten= 0%, Lag= 0.0 min Primary = 3.67 cfs @ 12.02 hrs, Volume= 0.203 of Secondary = 0.04 cfs @ 12.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 326.12' @ 12.02 hrs Device Routino Invert Outlet Devices #1 Primary 323.75' 18.0" Round Culvert L= 180.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 323.75' / 319.00' S= 0.0264 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 323.75' 10.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 326.00' 36.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads Mary OutFlow Max=3.58 cfs @ 12.02 hrs HW=326.03' (Free Discharge) Culvert (Passes 3.58 cfs of 14.35 cfs potential flow) t2=Orifice/Grate (Orifice Controls 3.58 cfs @ 6.57 fps) Secondary OutFlow Max=0.04 cfs @ 12.00 hrs HW=326.07' (Free Discharge) t3=Orifice/Grate (Orifice Controls 0.04 cfs @ 0.89 fps) Pond 21 P: POA#3A Diversion - STRA78 Hydrograph ❑ Inflow ❑ Outflow ❑ Primary ❑ Secondary Time (hours) Breezy Poa's Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 SS: POA#3A Runoff Area=4.860 ac 0.00% Impervious Runoff Depth>2.32" Tc=10.0 min CN=94 Runoff=16.18 cfs 0.938 of Pond 21 P: POA#3A Diversion - STR-178 Peak Elev=327.31' Inflow=16.18 cfs 0.938 of Primary=4.65 cfs 0.723 of Secondary=11.52 cfs 0.215 of Outflow=16.18 cfs 0.938 of Total Runoff Area = 4.860 ac Runoff Volume = 0.938 of Average Runoff Depth = 2.32" 100.00% Pervious = 4.860 ac 0.00% Impervious = 0.000 ac Breezy Poa's Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Subcatchment 15S: POA #3A Runoff = 16.18 cfs @ 12.01 hrs, Volume= 0.938 af, Depth> 2.32" Routed to Pond 21 P : POA#3A Diversion - STR-178 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.97" Area (ac) CN 4.860 94 4.860 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 15S: POA #3A Hydrograph ■ Rurwff 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Breezy Poa's Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Pond 21 P: POA#3A Diversion - STR-178 [57] Hint: Peaked at 327.31' (Flood elevation advised) Inflow Area = 4.860 ac, 0.00% Impervious, Inflow Depth > 2.32" for 1-yr event Inflow = 16.18 cfs @ 12.01 hrs, Volume= 0.938 of Outflow = 16.18 cfs @ 12.01 hrs, Volume= 0.938 af, Atten= 0%, Lag= 0.0 min Primary = 4.65 cfs @ 12.01 hrs, Volume= 0.723 of Secondary = 11.52 cfs @ 12.01 hrs, Volume= 0.215 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 327.31' @ 12.01 hrs Device Routino Invert Outlet Devices #1 Primary 323.75' 18.0" Round Culvert L= 180.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 323.75' / 319.00' S= 0.0264 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 323.75' 10.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 326.00' 36.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads Mary OutFlow Max=4.64 cfs @ 12.01 hrs HW=327.29' (Free Discharge) Culvert (Passes 4.64 cfs of 17.63 cfs potential flow) t2=Orifice/Grate (Orifice Controls 4.64 cfs @ 8.51 fps) Secondary OutFlow Max=11.26 cfs @ 12.01 hrs HW=327.29' (Free Discharge) t3=Orifice/Grate (Orifice Controls 11.26 cfs @ 3.87 fps) Pond 21 P: POA#3A Diversion - STRA78 Hydrograph ❑ Inflow ❑ Outflow ❑ Primary ❑ Secondary Time (hours) Breezy Poa's Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 SS: POA#3A Runoff Area=4.860 ac 0.00% Impervious Runoff Depth>2.92" Tc=10.0 min CN=94 Runoff=20.10 cfs 1.182 of Pond 21 P: POA#3A Diversion - STR-178 Peak Elev=327.53' Inflow=20.10 cfs 1.182 of Primary=4.82 cfs 0.874 of Secondary=15.28 cfs 0.308 of Outflow=20.10 cfs 1.182 of Total Runoff Area = 4.860 ac Runoff Volume = 1.182 of Average Runoff Depth = 2.92" 100.00% Pervious = 4.860 ac 0.00% Impervious = 0.000 ac Breezy Poa's Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Summary for Subcatchment 15S: POA #3A Runoff = 20.10 cfs @ 12.01 hrs, Volume= 1.182 af, Depth> 2.92" Routed to Pond 21 P : POA#3A Diversion - STR-178 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 2-yr Rainfall=3.59" Area (ac) CN 4.860 94 4.860 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 15S: POA #3A Hydrograph ■ Rurwff 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Breezy Poa's Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Summary for Pond 21 P: POA#3A Diversion - STR-178 [57] Hint: Peaked at 327.53' (Flood elevation advised) Inflow Area = 4.860 ac, 0.00% Impervious, Inflow Depth > 2.92" for 2-yr event Inflow = 20.10 cfs @ 12.01 hrs, Volume= 1.182 of Outflow = 20.10 cfs @ 12.01 hrs, Volume= 1.182 af, Atten= 0%, Lag= 0.0 min Primary = 4.82 cfs @ 12.01 hrs, Volume= 0.874 of Secondary = 15.28 cfs @ 12.01 hrs, Volume= 0.308 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 327.53' @ 12.01 hrs Device Routino Invert Outlet Devices #1 Primary 323.75' 18.0" Round Culvert L= 180.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 323.75' / 319.00' S= 0.0264 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 323.75' 10.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 326.00' 36.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads Mary OutFlow Max=4.80 cfs @ 12.01 hrs HW=327.51' (Free Discharge) Culvert (Passes 4.80 cfs of 17.92 cfs potential flow) t2=Orifice/Grate (Orifice Controls 4.80 cfs @ 8.81 fps) Secondary OutFlow Max=14.97 cfs @ 12.01 hrs HW=327.51' (Free Discharge) t3=Orifice/Grate (Orifice Controls 14.97 cfs @ 4.19 fps) Pond 21 P: POA#3A Diversion - STRA78 Hydrograph ❑ Inflow Outflow ❑ Primary ❑ Secondary Time (houm) Breezy Poa's Prepared by HP Inc. Type/1 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 SS: POA#3A Runoff Area=4.860 ac 0.00% Impervious Runoff Depth>4.72" Tc=10.0 min CN=94 Runoff=31.60 cfs 1.914 of Pond 21 P: POA#3A Diversion - STR-178 Peak Elev=328.12' Inflow=31.60 cfs 1.914 of Primary=5.22 cfs 1.308 of Secondary=26.38 cfs 0.606 of Outflow=31.60 cfs 1.914 of Total Runoff Area = 4.860 ac Runoff Volume = 1.914 of Average Runoff Depth = 4.72" 100.00% Pervious = 4.860 ac 0.00% Impervious = 0.000 ac Breezy Poa's Prepared by HP Inc. Type/1 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Subcatchment 15S: POA #3A Runoff = 31.60 cfs @ 12.01 hrs, Volume= 1.914 af, Depth> 4.72" Routed to Pond 21 P : POA#3A Diversion - STR-178 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=5.43" Area (ac) CN 4.860 94 4.860 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 15S: POA #3A Hydrograph ■ Rurwff Time (hours) Breezy Poa's Prepared by HP Inc. Type/1 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Pond 21 P: POA#3A Diversion - STR-178 [57] Hint: Peaked at 328.12' (Flood elevation advised) Inflow Area = 4.860 ac, 0.00% Impervious, Inflow Depth > 4.72" for 10-yr event Inflow = 31.60 cfs @ 12.01 hrs, Volume= 1.914 of Outflow = 31.60 cfs @ 12.01 hrs, Volume= 1.914 af, Atten= 0%, Lag= 0.0 min Primary = 5.22 cfs @ 12.01 hrs, Volume= 1.308 of Secondary = 26.38 cfs @ 12.01 hrs, Volume= 0.606 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 328.12' @ 12.01 hrs Device Routino Invert Outlet Devices #1 Primary 323.75' 18.0" Round Culvert L= 180.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 323.75' / 319.00' S= 0.0264 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 323.75' 10.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 326.00' 36.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads Mary OutFlow Max=5.20 cfs @ 12.01 hrs HW=328.09' (Free Discharge) Culvert (Passes 5.20 cfs of 18.65 cfs potential flow) t2=Orifice/Grate (Orifice Controls 5.20 cfs @ 9.54 fps) Secondary OutFlow Max=25.95 cfs @ 12.01 hrs HW=328.09' (Free Discharge) t3=Orifice/Grate (Orifice Controls 25.95 cfs @ 4.93 fps) Pond 21 P: POA#3A Diversion - STRA78 Hydrograph ❑ Inflow ❑ Outflow ❑ Primary ❑ Secondary Time (houm) Breezy Poa's Prepared by HP Inc. Type 11 24-hr 50-yr Rainfall= 7.73 " Printed 9/6/2022 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 SS: POA#3A Runoff Area=4.860 ac 0.00% Impervious Runoff Depth>7.00" Tc=10.0 min CN=94 Runoff=45.80 cfs 2.836 of Pond 21 P: POA#3A Diversion - STR-178 Peak Elev=328.87' Inflow=45.80 cfs 2.836 of Primary=5.69 cfs 1.828 of Secondary=40.11 cfs 1.008 of Outflow=45.80 cfs 2.836 of Total Runoff Area = 4.860 ac Runoff Volume = 2.836 of Average Runoff Depth = 7.00" 100.00% Pervious = 4.860 ac 0.00% Impervious = 0.000 ac Breezy Poa's Prepared by HP Inc. Type 11 24-hr 50-yr Rainfall= 7.73 " Printed 9/6/2022 Summary for Subcatchment 15S: POA #3A Runoff = 45.80 cfs @ 12.01 hrs, Volume= 2.836 af, Depth> 7.00" Routed to Pond 21 P : POA#3A Diversion - STR-178 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 50-yr Rainfall=7.73" Area (ac) CN 4.860 94 4.860 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 15S: POA #3A Hydrograph ■ Runoff 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Breezy Poa's Prepared by HP Inc. Type II 24-hr 50-yr Rainfall= 7.73 " Printed 9/6/2022 Summary for Pond 21 P: POA#3A Diversion - STR-178 [57] Hint: Peaked at 328.87' (Flood elevation advised) Inflow Area = 4.860 ac, 0.00% Impervious, Inflow Depth > 7.00" for 50-yr event Inflow = 45.80 cfs @ 12.01 hrs, Volume= 2.836 of Outflow = 45.80 cfs @ 12.01 hrs, Volume= 2.836 af, Atten= 0%, Lag= 0.0 min Primary = 5.69 cfs @ 12.01 hrs, Volume= 1.828 of Secondary = 40.11 cfs @ 12.01 hrs, Volume= 1.008 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 328.87' @ 12.01 hrs Device Routino Invert Outlet Devices #1 Primary 323.75' 18.0" Round Culvert L= 180.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 323.75' / 319.00' S= 0.0264 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 323.75' 10.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 326.00' 36.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads Mary OutFlow Max=5.67 cfs @ 12.01 hrs HW=328.83' (Free Discharge) Culvert (Passes 5.67 cfs of 19.53 cfs potential flow) t2=Orifice/Grate (Orifice Controls 5.67 cfs @ 10.40 fps) Secondary OutFlow Max=39.57 cfs @ 12.01 hrs HW=328.83' (Free Discharge) t3=Orifice/Grate (Orifice Controls 39.57 cfs @ 5.73 fps) Pond 21 P: POA#3A Diversion - STRA78 Hydrograph ❑ Inflow ❑ Outflow ❑ Primary ❑ Secondary Time (houm) Breezy Poa's Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 SS: POA#3A Runoff Area=4.860 ac 0.00% Impervious Runoff Depth>8.16" Tc=10.0 min CN=94 Runoff=52.98 cfs 3.307 of Pond 21 P: POA#3A Diversion - STR-178 Peak Elev=329.40' Inflow=52.98 cfs 3.307 of Primary=6.01 cfs 2.081 of Secondary=46.97 cfs 1.226 of Outflow=52.98 cfs 3.307 of Total Runoff Area = 4.860 ac Runoff Volume = 3.307 of Average Runoff Depth = 8.16" 100.00% Pervious = 4.860 ac 0.00% Impervious = 0.000 ac Breezy Poa's Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Summary for Subcatchment 15S: POA #3A Runoff = 52.98 cfs @ 12.01 hrs, Volume= 3.307 af, Depth> 8.16" Routed to Pond 21 P : P0A#3A Diversion - STR-178 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=8.90" Area (ac) CN 4.860 94 4.860 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, 5f 5f 4f 4f 3f 1�^ 3f 0 LL 2: 2f if Subcatchment 15S: POA #3A Hydrograph ■■■ i ■■■ • .W■I, o • •�• r. ® ■■■■■■■■■■■■ ■I ■■■■■■■■■■■■1.0 ■MENOMONEE ■■■■■■■■■ 9 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) ■ Rurwff Breezy Poa's Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Summary for Pond 21 P: POA#3A Diversion - STR-178 [57] Hint: Peaked at 329.40' (Flood elevation advised) Inflow Area = 4.860 ac, 0.00% Impervious, Inflow Depth > 8.16" for 100-yr event Inflow = 52.98 cfs @ 12.01 hrs, Volume= 3.307 of Outflow = 52.98 cfs @ 12.01 hrs, Volume= 3.307 af, Atten= 0%, Lag= 0.0 min Primary = 6.01 cfs @ 12.01 hrs, Volume= 2.081 of Secondary = 46.97 cfs @ 12.01 hrs, Volume= 1.226 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 329.40' @ 12.01 hrs Device Routino Invert Outlet Devices #1 Primary 323.75' 18.0" Round Culvert L= 180.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 323.75' / 319.00' S= 0.0264 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 323.75' 10.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 326.00' 36.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads Mary OutFlow Max=5.98 cfs @ 12.01 hrs HW=329.35' (Free Discharge) Culvert (Passes 5.98 cfs of 20.13 cfs potential flow) t2=Orifice/Grate (Orifice Controls 5.98 cfs @ 10.96 fps) Secondary OutFlow Max=46.33 cfs @ 12.01 hrs HW=329.35' (Free Discharge) t3=Orifice/Grate (Orifice Controls 46.33 cfs @ 6.55 fps) Pond 21 P: POA#3A Diversion - STRA78 Hydrograph ❑ Inflow ❑ Outflow ❑ Primary ❑ Secondary Time (houm)