A suppressed rectangular weir is being used to measure flows in anirrigation canal. The weir is 5 m wide and 2m high and, under floodconditions, the upstream and downstream depths are measured at 2.5mand 2.3 m, respectively.
Use all applicable formulae to estimate the range of flows possibleover the weir under these conditions?
Access the reliability of your flow estimate.
How could a more precise estimate of the flowrate be obtained?