Stationary water overflows from a reservoir over a broad crested spillway weir 5m wide. The spillway converges and terminates in a channel 3m wide the bed of which is 2m lower than the crest of the weir. Assuming critical flow over the crest and Cd = 1, determine the depth of the flow in the channel when the surface level of the reservoir is 0.2 m above the crest of the spillway

Spillway 12.9 m. long releases flood run off from a reservoir 5 hectares in area. If the reservoir level drops from elevation 55 m to 54 m. in 2520 sec. Find the elevation of the crest of the spillway in meters. Use Francis formula. Assume constant reservoir surface area.  a. 71.5 m b. 53.5 m c. 24.8 m d. 63.2 m

A triangular-shaped inflow hydrograph is routed through a reservoir assuming it is completely full at the beginning of the storm. The spillway crest is 20 m wide and has a coefficient of 2.7. The reservoir area is 0.5 km^2 and has vertical sides. What are the maximum outflow and the maximum height of water in the reservoir during this flow event?

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The discharge in a rectangular channel of width 7m and max depth of 3m is 10 m3/s. The normal depth is 2.55m. Determine the depth of flow downstream of a section in which the bed rises by 0.5m over a distance of 1m.

A 7350 m long, 1050 mm concrete pipeline connects an upstream reservoir (watersurface elevation 433.3 m) to a downstream reservoir (water surface elevation 423.1 m). Adischarge valve at the downstream end is used to control flow; when this valve is fully open,the measured discharge in the pipeline is 920 L/s under the naturally available head difference.(a) Assuming fully developed turbulent flow and that all other local losses are negligible,estimate the loss coefficient k for the fully open valve (assume f = 0.015).(b) Because of increasing urban development, the flow under the natural head difference isconsidered to be inadequate and it is proposed to increase this flow with pumping. The head-capacity curve for the pump can be approximated by the equation H = 8 – 3.5Q2 in which H isthe total dynamic head on the pump (in m) and Q is the discharge (in m3/s). What is thedischarge that can now be obtained from the system where the pump is installed at a cross-section of the pipeline?

A triangular-shaped inflow hydrograph is routed through a reservoir assuming it is completely full at the beginning of the storm. The spillway crest is 20 m wide and has a coefficient of 2.7. The reservoir area is 0.5 km^2 and has vertical sides. What are the maximum outflow and the maximum height of water in the reservoir during this flow event? 90 10 Time (hr) Flow (m³/s)

5. In rectangular channel at a section P, it is required that the depth of flow is to be 1.4 m and the specific energy to be 2.8 m. The flow at section P is subcritical, critical, or supercritical flow? 10%

A retarding basin has storage and discharge characteristics as given below. The dam has an ungated sluice 1.5 m diameter with its center at elevation 157.5 m and a spillway at crest elevation 226.5 m. Discharge given below for pool elevations above 226.5 m include both sluice and spillway discharge. The inflow hydrograph is also given below. Route the flood through the reservoir using ISD and Modified Puls Method. Determine the maximum pool elevation reached, the reduction in flood peak and the reservoir lag. Pool elevation at commencement = 157.8 m (for which the discharge = 5.95 cumec).

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