A suppressed weir is located at the end of a square tank (s=3.05 m) and height h=10 m. If the initial head on the weir is 0.610 m, how long will it take for 3.54 m3 of water to run out of the tank? (cw= 1.85

The reservoir's water flow traverses a 15-meter-long spillway, lowering the water's height from 83 meters to 81.5 meters, with the crest elevation at 80 meters, in 30 minutes. Apply C = 1.84. A) What is the reservoir's area?B) How long does it take to extract water from an elevation of 83 m/80.2 m? C) After 20 minutes, what is the water's ultimate elevation?

Water discharges in too wide rectangular channel slope =0.01 Just apstream the weir where the water depth is 2.5m the flow rate is 5m ^ 3/s  As per meter width as shown below Assume n = 0.015 and neglected losses. 1. Find the normal depth, the critical depth and the critical slope? 2. Use the specific energy equation to find the weir height such that the flow over the wer is critical? 3. What water surface profile exists upstream the weir and locate the distance upstream the weit where the water depth equals the normal depth  ?