A spillway is to be designed for a flood control reservoir. The design must pass the 200-year event of 50,000 cfs while not allowing the upstream water elevation to exceed 800 ft. The channel can be...

A spillway is to be designed for a flood control reservoir. The design must pass the 200-year event of 50,000 cfs while not allowing the upstream water elevation to exceed 800 ft. The channel can be approximated by a rectangular section 500 ft wide.

a. What should be the elevation of the spillway crest in order to meet the design specifications?

b. What would be the elevation of the theoretical weir crest associated with the spillway?