Find the critical depth of a rectangular channel having a width of 6 ft. which carries a discharge of 120 cfs.  a. 3.25 ft b. 2.32 ft c. 4.51 ft d. 2.01 ft

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Highway Drainage

Highway drainage is the process of extracting and regulating the excess surface water on the pavement by giving the desired slope. The construction of a highway drain helps to divert the water present on the surface, and sub-grade by the means of slope. Highway drainage systems are a necessary part of smooth functioning of traffic, since the highway drainage systems provide proper disposal of unwanted substances from the highways.