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Home My WebLink AboutWPO202200038 Calculations 2022-09-14 (13)20S 0+00 - Str 46 4R 0+00 - 1+22 Subcat Reach On Link Routing Diagram for LD_POA#2 Prepared by HP Inc., Printed 9/6/2022 FHydroCADO 10.10-7c sin 08126 0 2022 HydroCAD Software Solutions LLC LD_POA#2 Prepared by HP Inc. Project Notes Defined 10 rainfall events from Albemarle Rainfall OF Copied 10 events from Albemarle Rainfall 24-hr S1 storm Printed 9/6/2022 LD_POA#2 Prepared by HP Inc. Area Listing (all nodes) Area C Description (acres) (subcatchment-numbers) 0.400 0.35 (20S) 0.400 0.35 TOTAL AREA Printed 9/6/2022 LD_POA#2 Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points Runoff by Rational method, Rise/Fall=1.0/1.0 xTc Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Printed 9/6/2022 Subcatchment 20S: 0+00 - Str#146 Runoff Area=0.400 ac 0.00% Impervious Runoff Depth=0.18" Tc=5.0 min C=0.35 Runoff=0.64 cfs 0.006 of Reach 4R: 0+00 - 1+22 Avg. Flow Depth=0.31' Max Vet=2.19 fps Inflow=0.64 cfs 0.006 of n=0.035 L=122.0' S=0.0347'/' Capacity=14.37 cfs Outflow=0.63 cfs 0.006 of Total Runoff Area = 0.400 ac Runoff Volume = 0.006 of Average Runoff Depth = 0.18" 100.00% Pervious = 0.400 ac 0.00% Impervious = 0.000 ac LD_POA#2 Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/6/2022 Summary for Subcatchment 20S: 0+00 - Str#146 Runoff = 0.64 cfs @ 0.09 hrs, Volume= 0.006 af, Depth= 0.18" Routed to Reach 4R : 0+00 - 1+22 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr 0.400 0.35 0.400 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, 5 Subcatchment 20S: 0+00 - Str#146 Hydrograph ❑ RunoH 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) LD_POA#2 Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/6/2022 Summary for Reach 4R: 0+00 - 1+22 Inflow Area = 0.400 ac, 0.00% Impervious, Inflow Depth = 0.18" for 2-yr event Inflow = 0.64 cfs @ 0.09 hrs, Volume= 0.006 of Outflow = 0.63 cfs @ 0.11 hrs, Volume= 0.006 af, Atten= 1 %, Lag= 1.4 min Routed to nonexistent node 6R Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 2.19 fps, Min. Travel Time= 0.9 min Avg. Velocity = 0.79 fps, Avg. Travel Time= 2.6 min Peak Storage= 35 cf @ 0.11 hrs Average Depth at Peak Storage= 0.31' , Surface Width= 1.85' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 14.37 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 4.0 2.0 7' Top Width= 6.00' Length= 122.0' Slope= 0.0347 7' Inlet Invert= 331.23', Outlet Invert= 327.00' 0.7 a.too 0.6 0.55 0.5 0.45 w 0.4 0.35 0 LL 0.3 0.25 0.2 0.15 0.1 Reach 4R: 0+00 -1+22 Hydrograph :� ■■■■■■■■■■■■■� • r r=1MIM, LLM �T.Z� , , III ■■■■■■■■■■■■ �I III............ ■■■■■■■■■■■■■ ■■■■■■■■■■■■ I�l tt 00 0.05 0, 0 11 .2 ,.„3„.,4.,„567„..8 .. .9,., 1,0„1, .1,2„1,3.,1,4„15,.1s„1,7., 18„1,9,.20 21 22 23 24 Time (hours) ■ Inflow ❑ Outflow LD_POA#2 Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points Runoff by Rational method, Rise/Fall=1.0/1.0 xTc Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Printed 9/6/2022 Subcatchment 20S: 0+00 - Str#146 Runoff Area=0.400 ac 0.00% Impervious Runoff Depth=0.24" Tc=5.0 min C=0.35 Runoff=0.84 cfs 0.008 of Reach 4R: 0+00 - 1+22 Avg. Flow Depth=0.34' Max Vet=2.35 fps Inflow=0.84 cfs 0.008 of n=0.035 L=122.0' S=0.0347'/' Capacity=14.37 cfs Outflow=0.83 cfs 0.008 of Total Runoff Area = 0.400 ac Runoff Volume = 0.008 of Average Runoff Depth = 0.24" 100.00% Pervious = 0.400 ac 0.00% Impervious = 0.000 ac LD_POA#2 Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Printed 9/6/2022 Summary for Subcatchment 20S: 0+00 - Str#146 Runoff = 0.84 cfs @ 0.09 hrs, Volume= 0.008 af, Depth= 0.24" Routed to Reach 4R : 0+00 - 1+22 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr 0.400 0.35 0.400 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, 5 Subcatchment 20S: 0+00 - Str#146 Hydrograph ■ Rurwff Time (hours) LD_POA#2 Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Printed 9/6/2022 Summary for Reach 4R: 0+00 - 1+22 Inflow Area = 0.400 ac, 0.00% Impervious, Inflow Depth = 0.24" for 10-yr event Inflow = 0.84 cfs @ 0.09 hrs, Volume= 0.008 of Outflow = 0.83 cfs @ 0.11 hrs, Volume= 0.008 af, Atten= 1 %, Lag= 1.4 min Routed to nonexistent node 6R Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 2.35 fps, Min. Travel Time= 0.9 min Avg. Velocity = 0.83 fps, Avg. Travel Time= 2.5 min Peak Storage= 43 cf @ 0.11 hrs Average Depth at Peak Storage= 0.34', Surface Width= 2.06' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 14.37 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 4.0 2.0 7' Top Width= 6.00' Length= 122.0' Slope= 0.0347 7' Inlet Invert= 331.23', Outlet Invert= 327.00' Reach 4R: 0+00 -1+22 Hydrograph ❑ Inflow ❑ Outflow 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)