The Westrich-Jurashek equation was developed from laboratory experiments on the transporting capacity of rigid boundary channels. Only fine sediments were used (0.026 to 0.11mm) in the experiments, which recorded the maximum transport without deposition on the channel bed. An energy balance equation was fitted to the results.
The equation is:
(9)
Where
Vs= settling velocity of the sediment particles (Other variables are as defined above.)
The applicability of the equation is limited to fine sediments and sediment transport over rigid boundaries.