2025 02 Drainage Statement Signed

2025-01 HydroCAD NOAA 24-hr D 2-Year Rainfall=3.44" 2025-01 HydroCAD NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 2/21/2025 Prepared by Dynamic Engineering Printed 2/21/2025 HydroCAD® 10.20-6a s/n 08640 © 2024 HydroCAD Software Solutions LLC Page 14 HydroCAD® 10.20-6a sin 08640 © 2024 HydroCAD Software Solutions LLC Page 15 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) 3 0.00 0.00 0.00 0.00 | 26.00 344 3.21 0.00 050 0.02 0.00 0.00 | 2650 344 3.21 0.00 1.00 0.04 0.00 0.00 | 27.00 344 3.21 0.00 150 0.08 0.00 001 | 2750 344 3.21 0.00 200 0.08 0.01 001 | 2800 344 3.21 0.00 250 0.11 0.02 0.02 | 2850 344 3.21 0.00 2 3.00 013 0.03 0.02 | 29.00 344 3.21 0.00 350 0.15 0.04 002 | 2950 344 3.21 0.00 z 400 0.18 + 0.06 0.03 | 30.00 344 3.21 0.00 : Pes 450 0.21 007 0.03 z ehgth=370 500 024 0.09 0.04 LAA ein, 550 0.26 0.12 0.04 c=4.4:min- 600 029 014 0.04 1 650 033 0.17 0.05 7.00 0.36 0.20 0.05 750 040 0.23 0.06 800 045 «027 0.07 850 049 031 0.08 900 055 036 0.08 o osc 950 061 042 0.10 O12 oe SETS SDN Ow ET 18 1) 0 2 2 2 25 26 27 28-20 30 10.00 0.68 0.49 0.13 Time (hours) 10.50 0,77 0.57 0.15 11.00 089 0.69 0.23 1150 1.09 0.88 0.38 1200 1651.43 1.68 1250 235° 212 0.53 13.00 2.55 2.32 0.28 13.50 2.67 2.44 0.18 1400 276 253 014 1450 283 2.60 0.12 15.00 289 2.66 0.10 1650 295 271 0.08 16.00 299 2.76 0.08 1650 3.04 281 0.07 1700 3.08 2.85 0.07 1750 3112.88 0.06 1800 315 291 0.05 1850 3.18 2.94 0.05 19.00 320 2.97 0.05 19.50 3.23 3.00 0.05 20.00 326 3.03 0.04 2050 329 305 0.04 2100 331 3.08 0.04 2150 333 3.10 0.04 2200 336 63.12 0.04 2250 338 3.15 0.04 23.00 340 3.17 0.04 2350 342 3.19 0.03 2400 3.44 3.21 0.03 2450 344 3.21 0.00 25.00 344 3.21 0.00 25.50 344 © 3.21 0.00