complete drainage report rev 9

POA-2 2024-05-12 HydroCad - Proposed POA 2B-1 NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 25S: Basin 2 - Perv Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 0.80 0.05 0.00 1.60 0.10 0.00 2.40 0.15 0.00 3.20 0.21 0.00 4.00 0.27 0.00 4.80 0.34 0.00 5.60 0.41 0.00 6.40 0.48 0.00 7.20 0.57 0.00 8.00 0.68 0.00 8.80 0.80 0.01 9.60 0.94 0.04 10.40 1.14 0.08 11.20 1.46 0.19 12.00 2.50 0.74 12.80 3.76 1.63 13.60 4.08 1.87 14.40 4.28 2.03 15.20 4.42 2.15 16.00 4.54 2.25 16.80 4.65 2.33 17.60 4.74 2.40 18.40 4.81 2.47 19.20 4.88 2.52 20.00 4.95 2.58 20.80 5.01 2.63 21.60 5.07 2.68 22.40 5.12 2.73 23.20 5.17 2.77 24.00 5.22 2.81 24.80 5.22 2.81 25.60 5.22 2.81 26.40 5.22 2.81 27.20 5.22 2.81 28.00 5.22 2.81 28.80 5.22 2.81 29.60 5.22 2.81 30.40 5.22 2.81 31.20 5.22 2.81 32.00 5.22 2.81 32.80 5.22 2.81 33.60 5.22 2.81 34.40 5.22 2.81 35.20 5.22 2.81 36.00 5.22 2.81 36.80 5.22 2.81 37.60 5.22 2.81 38.40 5.22 2.81 39.20 5.22 2.81 40.00 5.22 2.81 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.07 0.14 0.34 2.14 0.96 0.48 0.35 0.25 0.22 0.19 0.17 0.14 0.14 0.13 0.12 0.11 0.11 0.10 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches)

35 0.25 0.22 0.19 0.17 0.14 0.14 0.13 0.12 0.11 0.11 0.10 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 40.80 5.22 2.81 41.60 5.22 2.81 42.40 5.22 2.81 43.20 5.22 2.81 44.00 5.22 2.81 44.80 5.22 2.81 45.60 5.22 2.81 46.40 5.22 2.81 47.20 5.22 2.81 48.00 5.22 2.81 48.80 5.22 2.81 49.60 5.22 2.81 50.40 5.22 2.81 51.20 5.22 2.81 52.00 5.22 2.81 52.80 5.22 2.81 53.60 5.22 2.81 54.40 5.22 2.81 55.20 5.22 2.81 56.00 5.22 2.81 56.80 5.22 2.81 57.60 5.22 2.81 58.40 5.22 2.81 59.20 5.22 2.81 60.00 5.22 2.81 60.80 5.22 2.81 61.60 5.22 2.81 62.40 5.22 2.81 63.20 5.22 2.81 64.00 5.22 2.81 64.80 5.22 2.81 65.60 5.22 2.81 66.40 5.22 2.81 67.20 5.22 2.81 68.00 5.22 2.81 68.80 5.22 2.81 69.60 5.22 2.81 70.40 5.22 2.81 71.20 5.22 2.81 72.00 5.22 2.81 72.80 5.22 2.81 73.60 5.22 2.81 74.40 5.22 2.81 75.20 5.22 2.81 76.00 5.22 2.81 76.80 5.22 2.81 77.60 5.22 2.81 78.40 5.22 2.81 79.20 5.22 2.81 80.00 5.22 2.81 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Printed 10/25/2024 Page 123