Optimal Operation of Nashe Hydropower Reservoir under Land Use Land Cover Change in Blue Nile River Basin

Changes in LULC (land use land cover), which significantly influence the spatial and temporal distribution of hydrological processes water resources general, have a substantial impact on hydropower generation. The utilization an optimization approach order to analyze operation reservoirs is important concern planning management resources. SWAT (Soil Water Assessment Tool) HEC-ResPRM (Hydrologic Engineering Center reservoir evaluation system Prescriptive Reservoir Model) were combined model optimize Nashe Blue Nile River Basin (BNRB). stream flow into was determined using model, considering current future impacts changes. has been utilized generate optimal by results calibrated validated as input data. This study proposes method for integrating models examine effects historical cover change watershed’s operation. Therefore, aimed investigate scenarios concerning generation under effect reveal that both 2035 2050 show increased with increasing inflows, releases, storage, elevation future. area’s components increase surface runoff until 2035, its decrease from 2050. average annual storage scenario 7.25% 2.27%, respectively, when compared optimized scenario. changes significant development changing total monthly inflow volumes their seasonal distribution. operating rule curves commonly implemented reservoirs, since they help operators make essential, decisions available flow. Moreover, generated can be reference long-term prediction capacity, assist concerned authorities successful