A 200-acre urban drainage area consists of three different watershed areas: 60% single-family, 30% neighborhood businesses, and 10% playground area. If the time to concentration is 2.00 hours, determine the depth of gutters needed in the development area if each gutter is to accept 1% of the total volumetric flow. The slope along the roadway is 0.0005 ft/ft and a gutter cross-section as shown in Figure 4. State all assumptions applied.

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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.