A trapezoidal earthen channel with bottom width 5 ft and 2H on 1 V side slopes is carrying a discharge of 200 cfs at normal depth. If the channel is running on a slope of XXXXXXXXXXft/ft and has a...

A trapezoidal earthen channel with bottom width 5 ft and 2H on 1 V side slopes is carrying a discharge of 200 cfs at normal depth. If the channel is running on a slope of 0.0001 ft/ft and has a Manning n value of 0.025, find the normal depth.

An earthen canal in good condition having a bottom width of 4 m and side slopes of 2H on 1 V is designed to carry a discharge of 6
/s. If the slope of the canal is 0.39 m/km, what is the normal depth?