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Time of Concentration (Tc) <br />Project: TC <br />Location: <br />Present <br />Sheet Flow <br />Manning's Roughness Coeff. (n): <br />Flow Length, L (total L <= 100 ft): <br />Two -yr 24 -hr Rainfall, P: <br />Land Slope, s: <br />Tc: <br />Channel Flow <br />Cross Sectional Flow Area, a: <br />wetted Perimeter, Pw: <br />Hydraulic Radius, r: <br />Channel Slope, s: <br />Manning's Roughness Coeff. (n): <br />Velocity, v: <br />Flow Length, L: <br />Tc: <br />Shallow concentrated Flow <br />Surface Description: <br />Flow Length, L: <br />Watercourse Slope, s: <br />Average velocity, v: <br />Tc: <br />Total Tc: <br />TC All Areas <br />By: Ryan Ellis <br />checked: <br />segment ID: sheet <br />0.150 <br />80.00 ft <br />2.60 in <br />6.00 <br />0.098 <br />hr (5.9 min) <br />Segment ID: channel 2 <br />12.69 SqFt <br />18.43 ft <br />0.69 ft <br />6.00 <br />0.040 <br />7.11 ft /s <br />1765.00 ft <br />0.069 hr (4.1 min) <br />Segment ID: shallow <br />Unpaved <br />500.00 <br />6.00 <br />3.95 <br />0.035 <br />Page 1 <br />0.202 <br />Fri Jul 15 09:18:40 2011 <br />Date: 07/15/11 <br />Date: <br />ft <br />% <br />ft /s <br />hr (2.1 min) <br />hr (12.1 min) <br />