Drainage Report

Basin 4 without exfiltration Proposed basin 4 R5 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 17 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 0.01 5 585.00 0.00 3.00 0.03 122 585.03 0.00 4.50 0.05 359 585.09 0.00 6.00 0.07 685 585.17 0.00 7.50 0.10 1,136 585.28 0.00 9.00 0.14 1,776 585.44 0.00 10.50 0.25 2,802 585.69 0.00 12.00 2.45 6,360 586.54 0.00 13.50 0.39 13,733 588.22 0.00 15.00 0.20 15,230 588.56 0.00 16.50 0.15 16,164 588.78 0.00 18.00 0.11 16,879 588.95 0.00 19.50 0.10 17,339 589.07 0.04 21.00 0.09 17,515 589.11 0.08 22.50 0.08 17,537 589.11 0.08 24.00 0.07 17,512 589.11 0.07 25.50 0.00 17,270 589.05 0.03 27.00 0.00 17,141 589.02 0.02 28.50 0.00 17,077 589.00 0.01 30.00 0.00 17,038 588.99 0.01 31.50 0.00 17,007 588.98 0.01 33.00 0.00 16,981 588.98 0.00 34.50 0.00 16,960 588.97 0.00 36.00 0.00 16,943 588.97 0.00 37.50 0.00 16,929 588.96 0.00 39.00 0.00 16,918 588.96 0.00 40.50 0.00 16,908 588.96 0.00 42.00 0.00 16,901 588.96 0.00 43.50 0.00 16,895 588.96 0.00 45.00 0.00 16,890 588.96 0.00 46.50 0.00 16,885 588.95 0.00 48.00 0.00

43.50 0.00 16,895 588.96 0.00 45.00 0.00 16,890 588.96 0.00 46.50 0.00 16,885 588.95 0.00 48.00 0.00 16,882 588.95 0.00 49.50 0.00 16,879 588.95 0.00 51.00 0.00 16,877 588.95 0.00 52.50 0.00 16,875 588.95 0.00 54.00 0.00 16,874 588.95 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 16,870 588.95 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