Resolution 6772 - Laserfiche WebLink

Home Browse Search

67TH 160478 HydroCAD MSE 24 -hr 3 10 -Year Rainfall=4.26" Prepared by Microsoft Printed 6/1/2017 HydroCAD®10.00-20 s/n 03113 @2017 HydroCAD Software Solutions LLC Page 2 Summary for Subcatchment 1S: To NW inlet Runoff = 0.29 cfs @ 12.12 hrs, Volume= 0.012 af, Depth> 1.85" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs MSE 24 -hr 3 10 -Year Rainfall=4.26" Area (ac) CN Adj Description 0.010 98 Unconnected pavement, HSG C 0.070 74 >75% Grass cover, Good, HSG C 0.080 77 76 Weighted Average, UI Adjusted 0.070 87.50% Pervious Area 0.010 12.50% Impervious Area 0.010 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment 2S: To SE inlet Runoff = 0.34 cfs @ 12.12 hrs, Volume= 0.015 af, Depth> 1.78" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs MSE 24 -hr 3 10 -Year Rainfall=4.26" Area (ac) CN Adj Description 0.010 98 Unconnected pavement, HSG C 0.090 74 >75% Grass cover, Good, HSG C 0.100 76 75 Weighted Average, UI Adjusted 0.090 90.00% Pervious Area 0.010 10.00% Impervious Area 0.010 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Pond 3P: NW Depression Inflow Area = 0.080 ac, 12.50% Impervious, Inflow Depth > 1.85" for 10 -Year event Inflow = 0.29 cfs @ 12.12 hrs, Volume= 0.012 of Outflow = 0.28 cfs @ 12.14 hrs, Volume= 0.012 af, Atten= 0%, Lag= 0.9 min Primary = 0.28 cfs @ 12.14 hrs, Volume= 0.012 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 968.10'@ 12.13 hrs Surf.Area= 68 sf Storage= 9 cf Plug -Flow detention time= 0.4 min calculated for 0.012 of (100% of inflow) Center -of -Mass det. time= 0.4 min ( 788.6 - 788.2 )