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�� Hydrograph Plot <br /> Enplfah <br /> Hyd. No. 1 <br /> Existing Condition <br /> Hydrograph type = SBUH Runoff Peak discharge = 0.02 cfs <br /> Storm frequency = 2 yrs Time interval = 2 min <br /> Drainage area = 0.21 ac Curve number = 85 <br /> Basin Slope = 0.0 % Hydraulic length = 0 ft <br /> Tc method = USER Time of conc. (Tc) = 6.6 min <br /> Total precip. = 1.55 in Distribution = Type IA <br /> Storm duration = 24 hrs Shape factor = N/A <br /> Tohl Volurtb�J87 wR <br /> 1 - SBUH Runoff - 2 Yr - Qp = 0.02 cfs <br /> 0.020 <br /> 0.015- <br /> � 0.010 / Hyd. 1 <br /> 0.005 <br /> � 0.000 <br /> 0 10 15 20 25 <br /> Time (hrs) <br /> r <br />