Suppose the 4-hr unit hydrograph for a watershed is Time (hr) 0 2 UH (m/s/10 mm)...

  

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Suppose the 4-hr unit hydrograph for a watershed is Time (hr) 0 2 UH (m³/s/10 mm) 0 15 45 14 10 12 50 25 10 0 4 6 8 65 (a) Determine the 2-hr unit hydrograph. (b) From the frequency analysis, the 10-year 4-hr storm has a total depth of 3 cm with an effective rainfall intensity of 1 cm/hr in the first 2 hr and 0.5 cm/hr in the second 2 hr. Assuming the base flow is 10 m³/s, calculate the total runoff hydrograph from the 10-year 4-hr storm. Suppose the 4-hr unit hydrograph for a watershed is Time (hr) 0 2 UH (m³/s/10 mm) 0 15 45 14 10 12 50 25 10 0 4 6 8 65 (a) Determine the 2-hr unit hydrograph. (b) From the frequency analysis, the 10-year 4-hr storm has a total depth of 3 cm with an effective rainfall intensity of 1 cm/hr in the first 2 hr and 0.5 cm/hr in the second 2 hr. Assuming the base flow is 10 m³/s, calculate the total runoff hydrograph from the 10-year 4-hr storm. Suppose the 4-hr unit hydrograph for a watershed is Time (hr) 0 2 UH (m³/s/10 mm) 0 15 45 14 10 12 50 25 10 0 4 6 8 65 (a) Determine the 2-hr unit hydrograph. (b) From the frequency analysis, the 10-year 4-hr storm has a total depth of 3 cm with an effective rainfall intensity of 1 cm/hr in the first 2 hr and 0.5 cm/hr in the second 2 hr. Assuming the base flow is 10 m³/s, calculate the total runoff hydrograph from the 10-year 4-hr storm.

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a To determine the 2hour unit hydrograph we need to interpolate between the given values in the 4hour unit hydrograph Since the time interval of the 2... View the full answer