complete drainage report rev 9

POA-2 2024-05-12 HydroCad - Proposed POA 2B-1 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 20S: 15775.6 Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 0.80 0.08 0.00 1.60 0.16 0.00 2.40 0.25 0.00 3.20 0.35 0.00 4.00 0.45 0.00 4.80 0.56 0.00 5.60 0.68 0.00 6.40 0.80 0.00 7.20 0.95 0.02 8.00 1.12 0.05 8.80 1.32 0.09 9.60 1.56 0.17 10.40 1.89 0.30 11.20 2.42 0.57 12.00 4.15 1.71 12.80 6.24 3.39 13.60 6.77 3.84 14.40 7.10 4.13 15.20 7.34 4.34 16.00 7.54 4.51 16.80 7.71 4.67 17.60 7.86 4.80 18.40 7.98 4.91 19.20 8.10 5.01 20.00 8.21 5.11 20.80 8.31 5.20 21.60 8.41 5.29 22.40 8.50 5.37 23.20 8.58 5.45 24.00 8.66 5.52 24.80 8.66 5.52 25.60 8.66 5.52 26.40 8.66 5.52 27.20 8.66 5.52 28.00 8.66 5.52 28.80 8.66 5.52 29.60 8.66 5.52 30.40 8.66 5.52 31.20 8.66 5.52 32.00 8.66 5.52 32.80 8.66 5.52 33.60 8.66 5.52 34.40 8.66 5.52 35.20 8.66 5.52 36.00 8.66 5.52 36.80 8.66 5.52 37.60 8.66 5.52 38.40 8.66 5.52 39.20 8.66 5.52 40.00 8.66 5.52 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.02 0.04 0.07 0.15 0.94 0.31 0.15 0.11 0.08 0.07 0.06 0.05 0.05 0.04 0.04 0.04 0.04 0.03 0.03 0.03 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)

11 0.08 0.07 0.06 0.05 0.05 0.04 0.04 0.04 0.04 0.03 0.03 0.03 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 8.66 5.52 41.60 8.66 5.52 42.40 8.66 5.52 43.20 8.66 5.52 44.00 8.66 5.52 44.80 8.66 5.52 45.60 8.66 5.52 46.40 8.66 5.52 47.20 8.66 5.52 48.00 8.66 5.52 48.80 8.66 5.52 49.60 8.66 5.52 50.40 8.66 5.52 51.20 8.66 5.52 52.00 8.66 5.52 52.80 8.66 5.52 53.60 8.66 5.52 54.40 8.66 5.52 55.20 8.66 5.52 56.00 8.66 5.52 56.80 8.66 5.52 57.60 8.66 5.52 58.40 8.66 5.52 59.20 8.66 5.52 60.00 8.66 5.52 60.80 8.66 5.52 61.60 8.66 5.52 62.40 8.66 5.52 63.20 8.66 5.52 64.00 8.66 5.52 64.80 8.66 5.52 65.60 8.66 5.52 66.40 8.66 5.52 67.20 8.66 5.52 68.00 8.66 5.52 68.80 8.66 5.52 69.60 8.66 5.52 70.40 8.66 5.52 71.20 8.66 5.52 72.00 8.66 5.52 72.80 8.66 5.52 73.60 8.66 5.52 74.40 8.66 5.52 75.20 8.66 5.52 76.00 8.66 5.52 76.80 8.66 5.52 77.60 8.66 5.52 78.40 8.66 5.52 79.20 8.66 5.52 80.00 8.66 5.52 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 220