Drainage Report

Basin 4 without exfiltration Proposed basin 4 R5 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 41 Hydrograph for Pond 17P: Porous pavement system 4 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic-feet) (feet) (cfs) 0.00 0.00 0 585.00 0.00 1.50 0.08 163 585.04 0.00 3.00 0.14 787 585.19 0.00 4.50 0.18 1,647 585.40 0.00 6.00 0.20 2,671 585.66 0.00 7.50 0.30 4,022 585.99 0.00 9.00 0.41 5,941 586.44 0.00 10.50 0.77 9,068 587.16 0.00 12.00 7.10 19,488 589.59 0.59 13.50 1.07 21,555 590.10 1.48 15.00 0.56 20,513 589.84 0.76 16.50 0.41 19,441 589.58 0.58 18.00 0.30 18,684 589.40 0.42 19.50 0.27 18,316 589.31 0.30 21.00 0.24 18,181 589.27 0.26 22.50 0.21 18,087 589.25 0.23 24.00 0.18 17,998 589.23 0.20 25.50 0.00 17,442 589.09 0.06 27.00 0.00 17,226 589.04 0.03 28.50 0.00 17,119 589.01 0.01 30.00 0.00 17,066 589.00 0.01 31.50 0.00 17,029 588.99 0.01 33.00 0.00 16,999 588.98 0.00 34.50 0.00 16,975 588.98 0.00 36.00 0.00 16,955 588.97 0.00 37.50 0.00 16,939 588.97 0.00 39.00 0.00 16,926 588.96 0.00 40.50 0.00 16,915 588.96 0.00 42.00 0.00 16,906 588.96 0.00 43.50 0.00 16,899 588.96 0.00 45.00 0.00 16,893 588.96 0.00 46.50 0.00 16,888 588.96 0.00 48.00 0.00

43.50 0.00 16,899 588.96 0.00 45.00 0.00 16,893 588.96 0.00 46.50 0.00 16,888 588.96 0.00 48.00 0.00 16,884 588.95 0.00 49.50 0.00 16,881 588.95 0.00 51.00 0.00 16,879 588.95 0.00 52.50 0.00 16,877 588.95 0.00 54.00 0.00 16,875 588.95 0.00 55.50 0.00 16,873 588.95 0.00 57.00 0.00 16,872 588.95 0.00 58.50 0.00 16,871 588.95 0.00 60.00 0.00 16,871 588.95 0.00 61.50 0.00 16,870 588.95 0.00 63.00 0.00 16,869 588.95 0.00 64.50 0.00 16,869 588.95 0.00 66.00 0.00 16,869 588.95 0.00 67.50 0.00 16,868 588.95 0.00 69.00 0.00 16,868 588.95 0.00 70.50 0.00 16,868 588.95 0.00 72.00 0.00 16,868 588.95 0.00