2025 02 Drainage Statement Signed

2025-01 HydroCAD NOAA 24-hr D 10-Year Rainfall=5.22" 2025-01 HydroCAD NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Dynamic Engineering Printed 2/21/2025 Prepared by Dynamic Engineering Printed 2/21/2025 HydroCAD® 10.20-6a sin 08640 © 2024 HydroCAD Software Solutions LLC Page 30 HydroCAD® 10.20-6a sin 08640 © 2024 HydroCAD Software Solutions LLC Page 31 Subcatchment 3S: Proposed Impervious Hydrograph for Subcatchment 3S: Proposed Impervious aan Time Precip. Excess Runoff | Time Precip. Excess Runoff. (hours) (inches) (inches) (cfs) | (hours) (inches) (inches) cfs) 0.00 0.00 0.00 0.00 | 26.00 522 4.98 0.00 050 0.03 0.00 0.00 | 2650 522 498 0.00 + 1.00 0.06 0.00 0.01 | 27.00 522 4.98 0.00 150 0.09 0.01 0.02 | 2750 522 4.98 0.00 200 0.13 0.02 0.03 | 2800 522 4.98 0.00 250 0.16 0.04 0.04 | 2850 522 4.98 0.00 3 3.00 020 0.07 0.04 | 2900 522 498 0.00 350 0.23 009 0.05 | 2950 522 498 0.00 z 400 027 0.12 0.05 | 30.00 522 4.98 0.00 : 450 031 0.16 0.06 2 500 036 0.19 0.06 2 550 0.40 023 0.07 600 045 0.27 0.07 650 049 031 0.08 7.00 055 0.36 0.09 1 750 061 0.42 0.10 800 068 «048 ont 850 0.75 055 0.12 900 083 063 0.13 ° osc 950 092 074 0.16 O12 oe SETS SDN WW ET 18 1) 0 M2 2 2 25 26 27 28-20 30 10.00 1.03 0.82 0.20 Time (hours) 10.50 1.47 0.96 0,24 1100 1361.14 0.36 1150 1651.43 0.58 1200 250 2.27 2.58 1250 357 3.33 081 13.00 3.86 3.63 0.42 13.50 4.05 3.82 0.27 1400 4.19 3.95 024 1450 4.30 4.06 0.18 15.00 4.39 4.16 0.14 1550 4.47 4.23 0.13 16.00 4.54 4.31 0.12 1650 461 437 ont 1700 487 4.43 0.10 1750 4.73 4.49 0.09 1800 4.77 4.54 0.08 1850 4.82 4.58 0.08 19.00 4.86 4.63 0.07 19.50 4.91 4.67 0.07 20.00 495 4.71 0.07 2050 499 475 0.07 2100 502 479 0.06 2150 506 4.82 0.06 2200 509 4.86 0.06 2250 513 4.89 0.06 23.00 5.16 4.92 0.05 2350 519 495 0.05 24.00 5.22 4.98 0.05 2450 522 4.98 0.00 2500 522 4.98 0.00 25.50 522 4.98 0.00