An irrigation channel is to carry a full supply discharge of 30m³ /sec at a velocity of 1.75 m/ sec. The side slopes are to be 1H: 1V. The ratio of full supply depth to bed width is to be 1:6. Assuming the Manning's 'n' as 0.018, calculate the full supply depth, bed width and bed slope of the channel.

1. Three reservoir A, B, and C are connected by pipelines 1, 2, 3 respectively which merges at a junction X. the elevation of reservoir A is 300 m and that of B is 285 m. The rate of flow from reservoir A is 1.4m³/s A) Compute the rate of flow in reservoir B B) Compute the rate of flow in reservoir C C) Compute the elevation of reservoir C EL 300 m Qb = 0.189 m³/s (receiver) Qc =1.211 m/s ELC = 148.93 m EL 285 m. VEL? Pipe 1 2 3 f 0.0157 0.0162 0.0177 diameter (mm) 800 600 450 Length (m ) 1500 450 1200

4.61. Water flows at 11 m³/s in a rectangular channel of width 5 m. The slope of the channel is 0.1% and the Manning roughness coefficient is equal to 0.035. If the depth of flow at a selected section is 2 m, calculate the upstream depths at 20 m intervals along the channel until the depth of flow is within 5% of the uniform flow depth.

A wide river with a water surface elevation 1/8000 of depth of flow D. If the depth of flow in the river is decreased by one third and the surface slope is decreased by 40%. If he ratio of the discharge is 2.58. Determine the percentage change in discharge. A 70.25% B-61.24% C 61.24% D -70.25%