1. A watershed has an area of 42.0 square miles and a main channel length of 18.1 miles, and the main channel length from the watershed outlet to the point opposite the centroid of the watershed is 6.0 miles. The regional parameters are C₁ = 2.0 and C₂ = 0.6. Compute the Tp. Qp. W50, W75, and T8 for Snyder's standard synthetic unit hydrograph and the same information for a 3-hr Snyder's synthetic unit hydrograph. Also, what is the duration of the standard synthetic unit hydrograph?

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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.