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MSE 24-hr 3 10-Year Rainfall=4.19"Existing Conditions <br /> Printed 12/27/2019Prepared by Larson Engineering <br />Page 10HydroCAD® 10.00-21 s/n 01934 © 2018 HydroCAD Software Solutions LLC <br />Summary for Subcatchment B: <br />Runoff = 10.61 cfs @ 12.55 hrs, Volume= 51,328 cf, Depth= 2.45" <br />Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-90.00 hrs, dt= 0.01 hrs <br />MSE 24-hr 3 10-Year Rainfall=4.19" <br />Area (sf)CN Description <br />* 13,806 98 Impervious <br />117,751 80 >75% Grass cover, Good, HSG D <br />73,998 89 Row crops, straight row, Good, HSG D <br />45,481 77 Woods, Good, HSG D <br />251,036 83 Weighted Average <br />237,230 94.50% Pervious Area <br />13,806 5.50% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft/ft) (ft/sec) (cfs) <br />9.2 118 0.1000 0.21 Sheet Flow, <br />Grass: Dense n= 0.240 P2= 2.75" <br />27.2 182 0.0160 0.11 Sheet Flow, <br />Grass: Dense n= 0.240 P2= 2.75" <br />3.5 221 0.0220 1.04 Shallow Concentrated Flow, <br />Short Grass Pasture Kv= 7.0 fps <br />39.9 521 Total