Abstract
The sedimentation in the reservoirs is a natural phenomenon, but its progression causes serious problems for reservoir operations and controls. Because it raises water levels, blocks water ways, and reduces the reservoir's capacity, etc. As a countermeasure, mechanical dredging has been applied to its removal from the reservoirs, but sediment flushing has to be available as well. This paper is based on the field survey and its data which derived from the sediment flushing carried out at the TAKI reservoir in 1991. It presents the numerical analysis on river bed formation after the sediment flushing in the reservoir and points out several matters which should be taken into account in the implementation of such a plan.
