A highway embankment is traversed by a 36-indiameter RCP 90 feet long. Another highway is located 1000 fi: downstream of the first and is traversed by a 75-ft-long 48 in CMP. The channel between the...

A highway embankment is traversed by a 36-indiameter RCP 90 feet long. Another highway is located 1000 fi: downstream of the first and is traversed by a 75-ft-long 48 in CMP. The channel between the two embankments is rectangular running on a slope of 0.005 ft/ft with a roughness coefficient of 0.04 and a bottom width of 15 feet. The invert of the downstream end of the first (most upstream) culvert is 0.0 ft. What is the discharge through the system when the headwater on the first culvert is at elevation 10 ft and the tail water on the second (downstream) culvert is 5 feet deep? Assume both culverts have flush entrances.