If a channel with the same cross-sectional and flow properties as the channel of Problem is laid on a slope of 0.01 ft/ft, determine whether the flow is supercritical or subcritical. Find the depth of flow at a point 1000 ft downstream from the point where y = 1.5 ft. (A trial-and-error solution may be necessary.)
Problem
A rectangular channel with n = 0.012 is 5 ft wide and is built on a slope of 0.0006 ft/ft. At point, the flow rate is 60 cfs and ya = 3 ft. Using one reach, find the distance to point b where yb = 2.5 ft and determine whether this point is upstream or downstream of point a.
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