FACING THE CHALLENGES OF RESERVOIR SEDIMENTATION.

This article explores the issue of reservoir sedimentation and its impact on various aspects such as water storage, hydropower installations, dam infrastructure, and recreational access. Sediment accumulation in reservoirs can occur due to the interruption of natural sediment sources downstream and the inability of sediment to pass through the dam upstream. This accumulation poses financial and environmental challenges as finding replacement sites for dams and reservoirs is not easy. The article discusses strategies for managing and mitigating sediment accumulation, including adapting reservoir and dam infrastructure and implementing improvements to upstream areas. It also highlights large-scale sediment removal projects that have been carried out using hydraulic dredging methods. The article suggests that passing sediment directly into the downstream river channel is the most cost-effective and environmentally appropriate approach, but it requires careful execution. The text also addresses the permitting challenges and regulatory hurdles associated with sediment release, particularly in the US, and emphasizes the need for a facilitated permitting process and technological innovations for sediment removal. Finally, it discusses the economic considerations and true costs of sediment buildup in reservoirs. [Extracted from the article]