Determine the water depth at 30 m upstream of the brink

Reference no: EM13299151

A 100 m long and 3.5 m wide concrete rectangular channel has a Manning's n=0.012 and a bottom slope of So=0.001. The channel entrance is rounded and smooth (negligible head loss at entrance), and the reservoir water surface is 2.5 m above the bed of the channel at the entrance. hf=0.00019*Q2, where Q (in m3/s) is the discharge in the channel.

A) Estimate the value for Q

B) Classify the water surface profile along the channel

C) Determine the water depth at 30 m upstream of the brink using one step method

D) If a rectangular sharp crested weir (3.5 m wide and 1.5 m high) is installed at the brink, determine the value for Q

Reference no: EM13299151

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