2025 02 Drainage Statement Signed

2025-01 HydroCAD NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Dynamic Engineering Printed 2/21/2025 HydroCAD® 10.20-6a s/n 08640 © 2024 HydroCAD Software Solutions LLC Page 36 2025-01 HydroCAD NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Dynamic Engineering Printed 2/21/2025 HydroCAD® 10.20-6a s/n 08640 © 2024 HydroCAD Software Solutions LLC Page 37 Hydrograph for Link SL: Existing Total Time Inflow Elevation Primary | Time Inflow Elevation Primary (hours) (cfs) (eet) (cfs) } (hours) (cfs) (feet) (cls) 0.00 0.00 0.00 0.00 | 26.00 0.00 0.00 0.00 0.50 0.00 0.00 0.00 | 26.50 0.00 0.00 0.00 1.00 0.01 0.00 o.o1 | 27.00 0.00 0.00 0.00 1.50 0.02, 0.00 o.o2 | 27.50 0.00 0.00 0.00 2.00 0.03 0.00 0.03 | 28.00 0.00 0.00 0.00 2.50 0.04 0.00 0.04 | 28.50 0.00 0.00 0.00 3.00 0.04 0.00 0.04 | 29.00 0.00 0.00 0.00 3.50 0.05 0.00 0.05 | 29.50 0.00 0.00 0.00 4,00 0.05 0.00 0.05 | 30.00 0.00 0.00 0.00 4.50 0.06 0.00 0.06 5.00 0.06 0.00 0.06 5.50 0.07 0.00 0.07 6.00 0.07 0.00 0.07 6.50 0.08 0.00 0.08 7.00 0.09 0.00 0.09 7.50 0.10 0.00 0.10 8.00 ott 0.00 ont 8.50 0.12 0.00 0.12 9.00 0.14 0.00 0.14 9.50 017 0.00 07 10.00 0.21 0.00 0.24 10.50 0.25 0.00 0.25 11.00 0.39 0.00 0.39 11.50 0.65, 0.00 0.65 12.00 3.04 0.00 3.04 12.50 0.99 0.00 0.99 13.00 0.52 0.00 0.52 13.50 0.34 0.00 0.34 14.00 027 0.00 027 14.50 0.22 0.00 0.22 15.00 0.18 0.00 0.18 15.50 O16 0.00 0.16 16.00 0.15 0.00 0.15, 16.50 014 0.00 014 17.00 0.13, 0.00 0.13 17.50 0.11 0.00 ont 18.00 0.10 0.00 0.10 18.50 0.10 0.00 0.10 19.00 0.09 0.00 0.09 19.50 0.09 0.00 0.09 20.00 0.09 0.00 0.09 20.50 0.08 0.00 0.08 21.00 0.08 0.00 0.08 21.50 0.08 0.00 0.08 22.00 0.07 0.00 0.07 22.50 0.07 0.00 0.07 23.00 0.07 0.00 0.07 23.50 0.06 0.00 0.06 24.00 0.06 0.00 0.06 24.50 0.00 0.00 0.00 25.00 0.00 0.00 0.00, 25.50 0.00 0.00 0.00 Summary for Link 6L: Proposed Total Inflow Area 1.133 ac, 74.29% Impervious, Inflow Depth = 4.31" for 10-Year event Inflow 5.12cfs@ 12.10 hrs, Volume= 0.407 af Primary 5.12cfs@ 12.10 hrs, Volume= 0.407 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0,00-30.00 hrs, dt= 0.05 hrs Link 6L: Proposed Total Hydrograph Flow (efs) ° ae, O12 a 6 8 67 8 STOTT Ia Te 1 1 I 18 19 20 21 2 2 26 25 26 27 28 29 30 Time (hours)