The width of the river is 20 m, the average depth is 1.5 m, the speed of the river is 2 m / s. Determine the flow rate of the river in this area.
November 11, 2020
Water discharge is the volume of water that flows per unit of time through the cross section of a river. The unit of water discharge is usually taken as 1 m3 / s or 1 km3 / year.
1) Find the cross-sectional area of the river:
F = 20 m × 1.5 m = 30 m2
2) Find the flow rate in the river:
Q = F × V = 30 m2 × 2 m / s = 60 m3 / s
Answer: the water discharge in the river in this section is 60 m3 / s.
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