For Europe, a reduction of 80% of the potential storage volume due to reservoir sedimentation is predicted by 2080. Sedimentation processes trigger the decrease of the storage volume and a related restriction in hydropower production. Further, the artificial downstream flushing of deposited fines has manifold effects on the aquatic ecology, including changes in morphology and sediment quality, as well as increased turbidity and subsequent stress for aquatic species. However, it is common to lower the water surface of reservoirs for technical inspections, which is not comparable to reservoir flushing operations. The presented case study deals with such a controlled drawdown beyond the operational level of the Gepatsch reservoir (Tyrol, Austria). Based on the awareness of possible ecological consequences, an advanced set of measures and an integrative monitoring design, consisting of a detailed event-based quantification of suspended sediments, changes in the morphology, especially with respect to fine sediments, and analyses of the biological quality element fish on the reach scale along the Inn River have been developed.

中文翻译：

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受控水库下降——沉积物管理和综合监测的挑战：奥地利案例研究——B部分：局部尺度

对于欧洲，预计到 2080 年，由于水库沉积，潜在蓄水量将减少 80%。沉积过程会导致蓄水量减少和水电生产的相关限制。此外，沉积细粒的人工下游冲洗对水生生态有多种影响，包括形态和沉积物质量的变化，以及浊度增加和水生物种随后的压力。但是，技术检查通常会降低水库的水面，这与水库冲洗操作不可比。所呈现的案例研究涉及这种超出 Gepatsch 水库（奥地利蒂罗尔）操作水平的受控压降。基于对可能的生态后果的认识，