V4 11 Stormwater Report Rev 3 1 26 2023

57 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 13 DA-5 (Pervious) Hydrograph type = SCS Runoff Peak discharge = 0.797 cfs Storm frequency = 10 yrs Time to peak = 12.20 hrs Time interval = 3 min Hyd. volume = 5,797 cuft Drainage area = 2.590 ac Curve number = 47* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 13.60 min Total precip. = 5.22 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2019\19 Shape factor 0265 Daughters = 484 of Israel - West Oran * Composite (Area/CN) = [(0.760 x 80) + (1.700 x 30) + (0.130 x 70)] / 2.590 DA-5 (Pervious) Q (cfs) Q (cfs) Hyd. No. 13 -- 10 Year 1.00 1.00 0.90 0.90 0.80 0.80 0.70 0.70 0.60 0.60 0.50 0.50 0.40

0.50 0.40 0.40 0.30 0.30 0.20 0.20 0.10 0.10 0.00 0.00 0 3 6 9 12 15 18 21 24 27 Time (hrs) Hyd No. 13