EX Pool 8 Full Matarrazo Drainage System Approved by Town 3623

Hydrograph Report Page 1 English Hyd. No. 9 PREDEVELOPED INFLOW 100 Hydrograph type = SCS Runoff Peak discharge = 1.68 cfs Storm frequency = 100 yrs Time interval = 6 min Drainage area = 0.40 ac Curve number = 75 Basin Slope = 1.0% Hydraulic length = 100 ft Te method = USER Time of conc. (Tc) = 15 min Total precip. = 8.30 in Distribution = Type Ill Storm duration = 24 hrs Shape factor = 484 Total Volume = 7,233 cuft Hydrograph Discharge Table Time -- Outflow Time -- Outflow Time -- Outflow Time -- Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 8.50 0.02 11.70 0.30 1490 0.11 18.10 0.05 8.60 0.02 11.80 0.44 15.00 0.11 18.20 0.05 8.70 0,02 11.90 0.63 15.10 0.11 18.30 0.04 8.80 0.02 12.00 1.00 15.20 0.10 18.40 0.04 8.90 0.02 12.10 1.62 15.30 0.10 18.50 0.04 9.00 0.03 12.20 1.68 << 15.40 0.10 18.60 0.04 9.10 0.03 1230 1.42 15.50 0.09 18.70 0.04 9.20 0.03 12.40 1.05 15.60 0.09 18.80 0.04 9.30 0.03 12.50 0.73 15.70 0.09 18.90 0.04 9.40 0.04 12.60 0.53 15.80 0.08 19.00 0.04 9.50 0.04 12.70 0.38 15.90 0.08 19.10 0,04 9.60 0.04 12.80 0.30 16.00 0.08 19.20 0.04 9.70 0.04 12.90 0.27 16.10 0.08 19.30 0.04 9.80 0.05 13.00 0.24 16.20 0.07 19.40 0.04 9.90 0.05 13.10 0.22 16.30 0.07 19.50 0.04 10.00 0.05 13.20 0.20 16.40 0.07 19.60 0.04 10.10 0.06 13.30 0.19 16.50 0.07 19.70 0.04 10.20 0.06 13.40 0.18 16.60 0.07 19.80 0.04 10.30 0.06 13.50 0.18 16.70 0.07 19.90 0.04 10.40 0.07 13.60 0.17 16.80 0.06 20.00 0.04 10.50 0.07 13.70 0.17 16.90 0.06 20.10 0.04 10.60 0.08 13.80 0.16 17.00 0.06 20.20 0.04 10.70 0.09 13.90 0.15 17.10 0.06 20.30 0.04 10.80 0.09 14.00 0.15 17.20 0.06 20.40 0.04 10.90 0.10 1410 0.14 17.30 0.06 20.50 0.04 11.00 0.10 14.20 0.14 17.40 0.06 20.60 0.04 1.410 0.11 14.30 0.13 17.50 0.05 20.70 0.03 11.20 0.12 14.40 0.13 17.60 0.05 20.80 0.03 11.30 0.14 14.50 0.12 47.70 0.05 20.90 0.03 11.40 0.16 14.60 0.12 17.80 0.05 21.00 0.03 11.50 0.18 14.70 0.12 17.90 0.05 21.10 0.03 11.60 0.21 14.80 0.12 18.00 0.05 21.20 0.03 Continues on next page... RESPONSE TO OPRA 2024-53_000051