Question: In a smooth, horizontal rectangular channel with a constant width of 1 0 ft , the upstream flow velocity is 9 ft / s ,

In a smooth, horizontal rectangular channel with a constant width of 10 ft, the upstream flow velocity is 9 ft/s, and the water depth is 11 ft. Given that the downstream bed elevation is 2 ft lower and the flow regime remains the same, determine the downstream water depth. (Hint: You may need to use trial and error, possibly with tools like Microsoft Excel, to find the downstream depth.)

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