Drainage Report

Basin 5 w/ exfiltration Proposed basin 5 R5 infilt 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 4 Hydrograph for Pond 24P: Infiltration basin 5 Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 570.50 0.00 0.00 0.00 1.50 0.01 4 570.50 0.00 0.00 0.00 3.00 0.03 77 570.51 0.02 0.02 0.00 4.50 0.05 171 570.51 0.04 0.04 0.00 6.00 0.07 255 570.52 0.05 0.05 0.00 7.50 0.10 361 570.53 0.08 0.08 0.00 9.00 0.14 530 570.54 0.09 0.09 0.00 10.50 0.25 1,055 570.59 0.09 0.09 0.00 12.00 2.12 3,968 570.82 0.09 0.09 0.00 13.50 0.45 11,803 571.45 0.09 0.09 0.00 15.00 0.23 12,993 571.55 0.10 0.10 0.00 16.50 0.17 13,531 571.59 0.10 0.10 0.00 18.00 0.13 13,822 571.61 0.10 0.10 0.00 19.50 0.11 13,937 571.62 0.10 0.10 0.00 21.00 0.10 13,990 571.63 0.10 0.10 0.00 22.50 0.09 13,982 571.63 0.10 0.10 0.00 24.00 0.08 13,913 571.62 0.10 0.10 0.00 25.50 0.00 13,446 571.58 0.10 0.10 0.00 27.00 0.00 12,932 571.54 0.10 0.10 0.00 28.50 0.00 12,419 571.50 0.10 0.10 0.00 30.00 0.00 11,906 571.46 0.09 0.09 0.00 31.50 0.00 11,394 571.42 0.09 0.09 0.00 33.00 0.00 10,883 571.38

0.00 11,906 571.46 0.09 0.09 0.00 31.50 0.00 11,394 571.42 0.09 0.09 0.00 33.00 0.00 10,883 571.38 0.09 0.09 0.00 34.50 0.00 10,372 571.34 0.09 0.09 0.00 36.00 0.00 9,862 571.29 0.09 0.09 0.00 37.50 0.00 9,353 571.25 0.09 0.09 0.00 39.00 0.00 8,844 571.21 0.09 0.09 0.00 40.50 0.00 8,336 571.17 0.09 0.09 0.00 42.00 0.00 7,829 571.13 0.09 0.09 0.00 43.50 0.00 7,322 571.09 0.09 0.09 0.00 45.00 0.00 6,816 571.05 0.09 0.09 0.00 46.50 0.00 6,311 571.01 0.09 0.09 0.00 48.00 0.00 5,807 570.97 0.09 0.09 0.00 49.50 0.00 5,303 570.93 0.09 0.09 0.00 51.00 0.00 4,800 570.89 0.09 0.09 0.00 52.50 0.00 4,297 570.85 0.09 0.09 0.00 54.00 0.00 3,795 570.81 0.09 0.09 0.00 55.50 0.00 3,294 570.77 0.09 0.09 0.00 57.00 0.00 2,794 570.73 0.09 0.09 0.00 58.50 0.00 2,294 570.68 0.09 0.09 0.00 60.00 0.00 1,795 570.64 0.09 0.09 0.00 61.50 0.00 1,296 570.60 0.09 0.09 0.00 63.00 0.00 798 570.56 0.09 0.09 0.00 64.50 0.00 320 570.53 0.07 0.07 0.00 66.00 0.00 102 570.51 0.02 0.02 0.00 67.50 0.00 32 570.50 0.01 0.01 0.00 69.00 0.00 10 570.50 0.00 0.00 0.00 70.50 0.00 3 570.50 0.00 0.00 0.00 72.00 0.00 1 570.50 0.00 0.00 0.00