The data obtained from a storm are given in the following table. (a) Calculate the U.H....

 

 

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The data obtained from a storm are given in the following table. (a) Calculate the U.H. (b) What is the period of this unit hydrograph? (c) Calculate the U.H. for 1-hr rainfall duration. (d) Plot the both U.Hs in one figure. Note: Use Runoff Rainfall coefficient of C=0.6. Time (Hr) Rainfall (in) Infiltration (in) Total runoff Base flow (cfs) (cfs) 7:00-7:10 A.M. 0.34 0.34 40 40 7:20 0.43 0.43 50 50 7:30 0.58 0.58 80 55 7:40 0.62 0.62 95 55 7:50 1.52 1.26 120 55 8:00 0.78 0.59 1021 60 8:10 0.39 0.24 2450 60 8:20 0.22 0.22 4150 65 8:30 0.11 0.11 2860 65 8:40 0.09 0.09 1790 70 8:50 0.04 0.04 1150 70 9:00 0 0 810 75 9:10 0 0 600 75 9:20 0 0 490 80 9:30 0 0 410 80 9:40 0 0 340 85 9:50 0 0 280 85 10:00 0 0 240 90 10:10 0 0 180 90 10:20 0 0 140 95 10:30 0 0 120 95 10:40 0 0 100 100 10:50 0 0 100 100 11:00 0 0 100 100 The data obtained from a storm are given in the following table. (a) Calculate the U.H. (b) What is the period of this unit hydrograph? (c) Calculate the U.H. for 1-hr rainfall duration. (d) Plot the both U.Hs in one figure. Note: Use Runoff Rainfall coefficient of C=0.6. Time (Hr) Rainfall (in) Infiltration (in) Total runoff Base flow (cfs) (cfs) 7:00-7:10 A.M. 0.34 0.34 40 40 7:20 0.43 0.43 50 50 7:30 0.58 0.58 80 55 7:40 0.62 0.62 95 55 7:50 1.52 1.26 120 55 8:00 0.78 0.59 1021 60 8:10 0.39 0.24 2450 60 8:20 0.22 0.22 4150 65 8:30 0.11 0.11 2860 65 8:40 0.09 0.09 1790 70 8:50 0.04 0.04 1150 70 9:00 0 0 810 75 9:10 0 0 600 75 9:20 0 0 490 80 9:30 0 0 410 80 9:40 0 0 340 85 9:50 0 0 280 85 10:00 0 0 240 90 10:10 0 0 180 90 10:20 0 0 140 95 10:30 0 0 120 95 10:40 0 0 100 100 10:50 0 0 100 100 11:00 0 0 100 100