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HomeMy WebLinkAboutWPO202200038 Calculations 2022-09-14 (17)22S Existing POA #6 Post POA #6 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) 10.300 80 (22S, 23S) 10.300 80 TOTAL AREA Printed 9/6/2022 Breezy Poa's Type Il 24-hr 1 inch Rainfall= 1. 00 " Prepared by HP Inc. Printed 9/6/2022 HVdroCADO 10.10-7c s/n 08126 © 2022 HVdroCAD Software Solutions LLC Paae 4 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 22S: Existing POA #6 Runoff Area=5.200 ac 0.00% Impervious Runoff Depth>0.08" Tc=8.0 min CN=80 Runoff=0.34 cfs 0.036 of Subcatchment 23S: Post POA #6 Runoff Area=5.100 ac 0.00% Impervious Runoff Depth>0.08" Tc=12.0 min CN=80 Runoff=0.27 cfs 0.035 of Total Runoff Area = 10.300 ac Runoff Volume = 0.071 of Average Runoff Depth = 0.08" 100.00% Pervious = 10.300 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 22S: Existing POA #6 Runoff = 0.34 cfs @ 12.05 hrs, Volume= 0.036 af, Depth> 0.08" 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 Description 5.200 80 5.200 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 c 0.18 LL 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Subcatchment 22S: Existing POA #6 Hydrograph • • 1 1 • 1 e 1 .---, I MENNEMMEMMMM ■.--.-..--.- ■ MMMMMMMMMMMM MMMMM.--.- EMMMMMMEMMMM IMMMMMMMEMMMM I MMMMMMMEMMMM 1 MMMMMMMMMMMM 1----------- Fi -.--.--.' . -.-..--.- €E • .-.-..--.' , .-..--.- �MMMMMMMM I I\ MMvMMM ................................................................................. 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/1 24-hr 1 inch Rainfall= 1. 00 " Printed 9/6/2022 Summary for Subcatchment 23S: Post POA #6 Runoff = 0.27 cfs @ 12.10 hrs, Volume= 0.035 af, Depth> 0.08" 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 Description 5.100 80 5.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, 0.28 0.26 0.24 0.22 0.2 0.18 0.16 p 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Subcatchment 23S: Post POA #6 Hydrograph MEMEM EERunoff Elei EE Area=5A • • • 1 1 i ■t ■EEMEMEM ■■■■■■■ .■■■■■■■■■■■ No E %/////////•%/////%///� 0. 1. .2. 3. 4 .5. 5. .7. 8. 0 .10 11 12 13 14 .15 .16 17 18. 19 20 .21 22 23..2 24 Time (hours) ■ Rurwff Breezy Poa's Type // 24-hr 1-yr Rainfall=2.97" Prepared by HP Inc. Printed 9/6/2022 HVdroCADO 10.10-7c s/n 08126 © 2022 HVdroCAD Software Solutions LLC Paae 7 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 22S: Existing POA #6 Runoff Area=5.200 ac 0.00% Impervious Runoff Depth>1.23" Tc=8.0 min CN=80 Runoff=10.44 cfs 0.531 of Subcatchment 23S: Post POA #6 Runoff Area=5.100 ac 0.00% Impervious Runoff Depth>1.22" Tc=12.0 min CN=80 Runoff=8.84 cfs 0.520 of Total Runoff Area = 10.300 ac Runoff Volume = 1.051 of Average Runoff Depth = 1.22" 100.00% Pervious = 10.300 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 22S: Existing POA #6 Runoff = 10.44 cfs @ 12.00 hrs, Volume= 0.531 af, Depth> 1.23" 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 Description 5.200 80 5.200 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 22S: Existing POA #6 Hydrograph MENEM MEN ■■ ■■ &■ Runoff • . NONE■■ ■■■■■■■■ j MNOON■:: SOMEONE. NONSENSE NE■■■■■■■E ■■■■■■■■ Time (houm) ■ Runoff Breezy Poa's Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Subcatchment 23S: Post POA #6 Runoff = 8.84 cfs @ 12.04 hrs, Volume= 0.520 af, Depth> 1.22" 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 Description 5.100 80 5.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment 23S: Post POA #6 Hydrograph 1 1 1 11 12 13 14 15 16 17 18 19 20 Time (houm) rFj !� Type 11 Runoff • Runoff ®•"Al ' ■■■■■■ 1 I ,....,...... I■■■■■■■■■■■ MENNEN ,....,...... ■ Rurwff Breezy Poa's Type 1124-hr 2-yr Rainfall=3.59 " Prepared by HP Inc. Printed 9/6/2022 HVdroCADO 10.10-7c s/n 08126 © 2022 HVdroCAD Software Solutions LLC Paoe 10 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 22S: Existing POA #6 Runoff Area=5.200 ac 0.00% Impervious Runoff Depth>1.70" Tc=8.0 min CN=80 Runoff=14.55 cfs 0.739 of Subcatchment 23S: Post POA #6 Runoff Area=5.100 ac 0.00% Impervious Runoff Depth>1.70" Tc=12.0 min CN=80 Runoff=12.37 cfs 0.724 of Total Runoff Area = 10.300 ac Runoff Volume = 1.463 of Average Runoff Depth = 1.70" 100.00% Pervious = 10.300 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 22S: Existing POA #6 Runoff = 14.55 cfs @ 12.00 hrs, Volume= 0.739 af, Depth> 1.70" 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 Description 5.200 80 5.200 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 22S: Existing POA #6 Hydrograph IMMEMEME■■■■■■■ ■ ■ I �/ // l ■■ • low Runoff Area=5.201-2u— Runoff • Run • • t i ■■■■ .Q MEN ■■■■■■■ ■■■■■ ■■■■■ ■■■■ ■■■■■■■■■■ M■■E ■■■■W■C■ Mo������������iiiiiiii M 6�.�7��.�8'9��� 1i0.��1�1 .��1213 �. 1�4 1�5 1i6 1�7. 18 19 �.20 21 22 23.�2 0 1 2 3 4 5 4 Time (hours) ❑ Runoff Breezy Poa's Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Summary for Subcatchment 23S: Post POA #6 Runoff = 12.37 cfs @ 12.04 hrs, Volume= 0.724 af, Depth> 1.70" 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 Description 5.100 80 5.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment 23S: Post POA #6 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 Type // 24-hr 10-yr Rainfall=5.43" Prepared by HP Inc. Printed 9/6/2022 HvdroCADO 10.10-7c s/n 08126 © 2022 HvdroCAD Software Solutions LLC Paoe 13 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 22S: Existing POA #6 Runoff Area=5.200 ac 0.00% Impervious Runoff Depth>3.27" Tc=8.0 min CN=80 Runoff=27.49 cfs 1.415 of Subcatchment 23S: Post POA #6 Runoff Area=5.100 ac 0.00% Impervious Runoff Depth>3.26" Tc=12.0 min CN=80 Runoff=23.52 cfs 1.387 of Total Runoff Area = 10.300 ac Runoff Volume = 2.802 of Average Runoff Depth = 3.26" 100.00% Pervious = 10.300 ac 0.00% Impervious = 0.000 ac Breezy Poa's Prepared by HP Inc. Type II 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Subcatchment 22S: Existing POA #6 Runoff = 27.49 cfs @ 11.99 hrs, Volume= 1.415 af, Depth> 3.27" 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 Description 5.200 80 5.200 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 22S: Existing POA #6 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 II 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Subcatchment 23S: Post POA #6 Runoff = 23.52 cfs @ 12.04 hrs, Volume= 1.387 af, Depth> 3.26" 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 Description 5.100 80 5.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment 23S: Post POA #6 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)