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Globally, water and energy demands are increasing continuously, while the storage capacity of structures like dams and reservoirs is reducing due to sediment-induced problems. Study of the reservoir sedimentation is essential for restoring the storage capacities to ensure the increasing water and energy demands. This study suggested the methodology for preparing the revised elevation–area–capacity curve for a reservoir for its efficient use. Also, it focused on two important issues through an example—estimation of the loss of the live storage capacity of the reservoir due to sedimentation and remedial measures to regain the lost capacity. In the present study, reservoir sedimentation is estimated using satellite remote sensing technique (SRS) considering a case of the Ujjani reservoir located in Maharashtra State, India. The modified normalized difference water index (MNDWI) is employed to determine the water …