The book "Environmental Management Plan of Sediment Flushing from Dam Reservoirs" provides a comprehensive analysis and development of simulation models and tools for environmental assessment. It aims to determine the optimal timings, concentrations, and flow rates for flushing sediments from reservoirs, based on available field data and flushing protocols. The study takes into account various constraints, including social, ecological, and water management aspects, to identify the best conditions for sediment management. By applying hydraulic models, the variation of flow and sediment concentration along the river is simulated, providing a solid basis for decision-making in environmental management.