A Pre-release Concept for Reservoir Management and the Effect Analysis on Flood Control

A pre-release strategy is developed in this research for Sg. Perak hydroelectricity scheme which consists of four cascading dams. To handle the extreme inflow, the pre-release methodology helps the dams to provide services in safe manners. Probable maximum precipitation (PMP) is applied to revise the estimation of reservoir intake of all four dams. The release equation is tailored according to the inflow received from upstream dam release, precipitations and surface runoff. Both scenarios, with pre-release and without pre-release are carefully analyzed to measure the performance. With pre-release strategy, the model shows efficient storage management during extreme inflow situation that creates a potential flood risk and dam failure.