A catchment has a drainage area of 0.025 km², a runoff coefficient of 0.6, an inlet time of 20 minutes, and a rainfall intensity of 138 mm/h. Determine the peak discharge for the catchment. O 0.572 m³/s

1. At a water elevation of 1947.9768 m., Kenyir Lake has a volume of 3, 625, 197, 720 cu. m., and a surface area, A of 194, 653, 773.6 sq.m. Annual inputs to the lake include 0.2032 m. of direct precipitation, runoff from gauged streams of 185, 022, 000 cu.m. per year, and ungauged runoff and groundwater inflow of 45, 638, 760 cu.m per year. Evaporation is 1.143 m. per year. Make a water budget showing inputs, km^3 per year.

Compute the diameter (cm) of the outfall required to drain storm water from the watershed described in figure below. Use rainfall intensity = 4 cm/hr. Average velocity of flow is 1 m/s. Other data are for: Area 1: C=0.5, area=0.005 km2. Area 2: C=0.4, area =0.01 km2. Area 3: C=0.7, area=0.015 km2.

A discharge of 0.15 cumecs is supplied into a canal at the head and 0.1 cumecs is delivered to field having an area of 1.5 hac. The Irrigation is started at a moisture extraction level of 60% of the available moisture and then extends for 10 hours. Determine the following efficiencies: water conveyance, water application, water storage, and water distribution. The following information are known: effective depth of r.z. = 1.7 m, runoff loss in the field = 425 m3 , water penetration depth varies linearly from 1.7 m at the head end of the field to 1.1 m at the tail end, W.H.C. = 25cm/m depth of soil.