Problem VI: The 1-hr UH for a watershed is given in Table 1. The watershed is drained into a reservoir with a discharge-

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Problem Vi The 1 Hr Uh For A Watershed Is Given In Table 1 The Watershed Is Drained Into A Reservoir With A Discharge 1 (160.4 KiB) Viewed 37 times

Problem VI: The 1-hr UH for a watershed is given in Table 1. The watershed is drained into a reservoir with a discharge- storage relationship of Q. = 0.00025S, where Q. (in mº sl) is the discharge, and S (in m?) is the storage. The watershed receives a 2-hr storm that generates 5 and 10 mm excess rainfall in the first and second hour, respectively. -- 1 t 1(1) Determine and plot the inflow hydrograph from the storm using the UH method -=; t (2) Determine and plot the outflow hydrograph from the storm using the Modified Puls method -- 1 t (3) Convert the 1-hr UH into the corresponding 2-hr UH using the S-curve method, and Plot the UHs, S-curve, and shifted S-curve on a same graph Table 1. The 1-hr UH. 3 4 5 2 6 7 8 9 10 11 Time (hr) 0 1 UH ordinate (m? s? mm:-) 0 8 35 70 110 1 80 55 25 20 15 5 0