A 31. 2-ft-wide overflow spillway is subject to a head of 3. 25 feet under design conditions.

Question:

A 31. 2-ft-wide overflow spillway is subject to a head of 3. 25 feet under design conditions. The coefficient of discharge is 3.42 based on model studies.
(a) Determine the spillway discharge, assuming a negligible approach velocity.
(b) Determine the spillway discharge under flood conditions if the head increases to 4.10 ft and the discharge coefficient increases to 3.47.