List of top Water Resources and Environmental Hydraulics Questions on Design of lined and unlined channels asked in GATE ES

A trapezoidal canal lined with cement concrete (\(n = 0.01\)) is designed to carry a discharge of 20 m\(^3\)/s at a bed slope 1 in 400. The bed width is twice the depth of flow and side slope of the canal section is 2 (1 vertical : 2 horizontal). The corresponding depth of flow will be ............. (in m, rounded off to two decimal places).

The following figure shows a 2-hour unit hydrograph (1 cm rainfall excess) for a catchment area of 540 hectare. Find the peak discharge (in m$^3$/s, rounded to one decimal place).