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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受控水库抽水-泥沙管理和综合监测的挑战：奥地利案例研究——A部分：覆盖范围

在欧洲，到2080年，预计由于水库沉淀而使潜在的储水量减少80％。沉淀过程触发了储水量的减少以及水电生产的相关限制。此外，对沉积细粉的人工下游冲洗对水生生态具有多种影响，包括形态和沉积物质量的变化，以及对水生物种增加的浊度和随后的压力。但是，通常需要降低水箱的水面以进行技术检查，这与水箱的冲洗操作无法相比。所介绍的案例研究处理了超出Gepatsch水库（奥地利蒂罗尔）水库运营水平的井喷情况。基于对可能的生态后果的认识，