CONSIDERING LONG TERM SEDIMENTATION FOR RESERVOIR OPERATION: FOUM EL KHERZA (BISKRA, ALGERIA)

Abstract

The present work deals with optimal reservoir operation in an arid region which vulnerability to erosion is identified by a rapid sedimentation of reservoirs. An optimized curve of reservoir sedimentation as a result of sediment-water power relationship will be used for future estimation of trapped sediment volume in the reservoir. Implicitly, this estimate of the useful volume is introduced into the reservoir operation optimization model using Explicit Stochastic Dynamic Programming (ESDP), in order to derive optimal operating policies for each horizon. Optimal releases from this optimization are subsequently introduced in a neural model to extract a more flexible relation expressing the releases according to storage in the reservoir and water inflows. The results of this optimization showed optimal region-based management of the useful volume of the reservoir and thus flexibility of reservoir operation rules is necessary to ensure the sustainability of the resource.