Drainage Report

Basin 4 without exfiltration Proposed basin 4 R5 NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 29 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 0.03 38 585.01 0.00 3.00 0.07 314 585.08 0.00 4.50 0.09 759 585.19 0.00 6.00 0.11 1,324 585.33 0.00 7.50 0.16 2,070 585.51 0.00 9.00 0.22 3,104 585.76 0.00 10.50 0.42 4,803 586.18 0.00 12.00 4.00 10,671 587.52 0.00 13.50 0.62 20,093 589.74 0.70 15.00 0.32 19,134 589.51 0.52 16.50 0.24 18,377 589.32 0.32 18.00 0.18 18,067 589.24 0.22 19.50 0.16 17,906 589.20 0.17 21.00 0.14 17,828 589.19 0.15 22.50 0.12 17,768 589.17 0.13 24.00 0.11 17,711 589.16 0.12 25.50 0.00 17,350 589.07 0.04 27.00 0.00 17,181 589.03 0.02 28.50 0.00 17,097 589.01 0.01 30.00 0.00 17,052 588.99 0.01 31.50 0.00 17,018 588.99 0.01 33.00 0.00 16,991 588.98 0.00 34.50 0.00 16,968 588.97 0.00 36.00 0.00 16,949 588.97 0.00 37.50 0.00 16,934 588.97 0.00 39.00 0.00 16,922 588.96 0.00 40.50 0.00 16,912 588.96 0.00 42.00 0.00 16,904 588.96 0.00 43.50 0.00 16,897 588.96 0.00 45.00 0.00 16,891 588.96 0.00 46.50 0.00 16,887 588.95 0.00 48.00 0.00

43.50 0.00 16,897 588.96 0.00 45.00 0.00 16,891 588.96 0.00 46.50 0.00 16,887 588.95 0.00 48.00 0.00 16,883 588.95 0.00 49.50 0.00 16,880 588.95 0.00 51.00 0.00 16,878 588.95 0.00 52.50 0.00 16,876 588.95 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