M.L. Chakim, K. Windianita
Sedimentation and waste are common challenges in reservoirs worldwide, including the Sengguruh Reservoir in the upstream Brantas River Basin, Indonesia. Since its operation in 1988, the reservoir has experienced rapid sedimentation, primarily from the Brantas River (Mount Arjuna) and Lesti River (Mount Semeru), which has significantly reduced its storage capacity and affected hydroelectric power generation. This study aims to optimize the Sengguruh Hydroelectric Power Plant (HPP) by addressing sedimentation and waste management. The methodology involves problem identification through primary and secondary data collection, literature review, evaluation of electricity generation data, measurement of sediment and waste volumes, and analysis of their impacts on HPP performance. A management plan was developed, combining periodic dredging with waste flow control using strategically installed trash booms, integrated with continuous monitoring to ensure effectiveness. The results show that sediment and waste management measures have successfully increased reservoir capacity, minimized waste accumulation, and improved electricity production efficiency by 10-15%. The study emphasizes that stakeholder coordination and appropriate technology application are critical for sustainable outcomes. Overall, this research contributes to the development of effective reservoir management strategies and supports energy resilience through the optimization of hydropower resources in the Brantas River Basin. © 2026 Published under licence by IOP Publishing Ltd.
Jasa Tirta I Public Corp, Malang, Indonesia; Water Resources Engineering Department, Faculty of Engineering, Universitas Brawijaya, Malang, Indonesia
