V4 11 Stormwater Report Rev 3 1 26 2023

72 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Friday, 01 / 27 / 2023 Hyd. No. 2 DA-2 (Pervious) Hydrograph type = SCS Runoff Peak discharge = 14.72 cfs Storm frequency = 100 yrs Time to peak = 12.15 hrs Time interval = 3 min Hyd. volume = 59,533 cuft Drainage area = 3.180 ac Curve number = 71* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 10.10 min Total precip. = 8.66 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2019\19 Shape factor 0265 Daughters = 484 of Israel - West Oran * Composite (Area/CN) = [(0.510 x 30) + (0.110 x 77) + (0.160 x 70) + (2.400 x 80)] / 3.180 DA-2 (Pervious) Q (cfs) Q (cfs) Hyd. No. 2 -- 100 Year 15.00 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 0.00 0.00 0

3.00 0.00 0.00 0 3 6 9 12 15 18 21 24 27 Time (hrs) Hyd No. 2