1. A culvert is constructed with twin 48-inch pipes with their groove ends built into a headwall. The culvert conveys a discharge of 285 cfs and operates under inlet control. Find the headwater depth....

1. A culvert is constructed with twin 48-inch pipes with their groove ends built into a headwall. The culvert conveys a discharge of 285 cfs and operates under inlet control. Find the headwater depth.

2. A 60-inch concrete pipe culvert (n
 0.012) conveys a discharge of 200 cfs. The culvert has a length of 250 feet, slope of 0.55 percent, and 45-degree wingwalls with square edge. Tailwater depth is 3.33 feet. Find the headwater depth.