Tutorials: Basis of Non-Uniform Flow ) A rectangular channel 9 m wide carries 7.6 urt's of water when flowing 1.0 m deep. Work out the flow specific energy. Is the flow subcritical or supercritical? (Anneer: 1.04 me and flow is subcritical) The flow discharge through a rectangular channel (n=0.012) 4.6 m wide is 11.3 m's when the slope is 1 m in 100 m. Is the flow subcritical or supercritical? Anwer supercritical (3) Two engineers observed two rivers and recorded the following flow parameters: (a) River 1 flow discharge Q - 130 m/s, flow velocity V 1.6 m/s, water surface width B - 80 m; (b) River 2. flow discharge Q = 1530 m/s, flow velocity V = 5.6 m's, water surface width B = 90 m. Decide the flow regime of two rivers, i.e. Previous