Question

A comprehensive hydrographic survey has been conducted on a river in central Europe. The survey results show that the average annual depth of flow in the river is 3000 mm, and the mean river width, over its entire length, is in the order of 24 m. The survey findings also conclude that the riverbed consists of fine gravel material. Further analysis of riverbed material confirms these to have an average specific gravity of 2.59 and an average particle diameter of 0.8 cm. Take the average riverbed slope to be 1 in 2250. Take that Manning’s n = 0.012.

Stating your assumptions estimate annual bedload transport of sediment within the river. Use Duboy’s Bedload Transport equation.

Answer 1