1. The water depth upstream of a stationary hydraulic jump is 1 m, while the depth after the jump is 2 m. Find the upstream and downstream velocities and Froude numbers. 2. The depth of water in a rectangular channel is 1.5 f t. The channel is 6 f t wide and carries a volume flow rate of 200 ft3/s. Find the water depth after a hydraulic jump.

Example 12.3. A small reservoir has a spillway crest elevation 200.0 m. Above this elevation, the storage and outflow from the reservoir can be expressed as: Storage: S=36000 + 18000y m³, Outflow Q=10y m³/s, where y is height of water above spillway crest in m. Route an inflow hydrograph which can be approximated by a triangle as: 1=0 at t=0, 1=30 m³/s at t=6 h and I = 0 at t = 26 h Assume at t= 0.y=0 and use At = 2 h

For a 6 ft wide rectangular channel, a hydraulic jump occurs according to the following figure. If the flowrate is 80 cfs and vi is 20 ft/s, find h2. h2

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