The outlet works for a reservoir include both a pipe through the embankment spillway. The...

The outlet works for a reservoir include both a pipe through the embankment spillway. The spillway is 10.0 m (32.8 ft) wide (L) and the discharge is given by the weir equation

The outlet pipe is 1.0 m (3.28 ft) in diameter with a total length of 75 m (246 ft) The Manning "n" value for the outlet pipe is 0.024 with a minor loss coefficient totaling 2.8 (entrance loss 0.8, bend loss 1.0, and exit loss 1.0). Assume the tailwater elevation remains below the top of pipe for the range in discharge rates expected. The water surface area in the reservoir is listed below.

Route the following hydrograph through the reservoir. The water surface elevation in the reservoir at the start of the storm is 310.0 m (1,016.8 ft)