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Selected Publication:

Hauer, C; Holzapfel, P; Flodl, P; Wagner, B; Graf, W; Leitner, P; Haimann, M; Holzer, G; Haun, S; Habersack, H; Schletterer, M.
(2020): Controlled Reservoir Drawdown-Challenges for Sediment Management and Integrative Monitoring: An Austrian Case Study-Part B: Local Scale
WATER-SUI. 2020; 12(4), 1055 FullText FullText_BOKU

The present case study deals with a controlled drawdown beyond the operational level of the Gepatsch reservoir (Austria). Based on the awareness of potential ecological consequences, an advanced set of measures was conducted and an integrative monitoring design was implemented. This pre- and post-event monitoring included measurements regarding the cross sectional variability and habitat-related turbidity, freeze-core sampling to obtain knowledge on fine sediment infiltration and an evaluation of the macroinvertebrate communities as well as fish egg development (salmonid incubation). The results of the sedimentological as well as biological investigations show a negligible impact on the downstream located aquatic system due to the controlled drawdown of the Gepatsch reservoir. In addition, recommendations based on the findings from this study regarding possible methods for local scale monitoring can be given.
Authors BOKU Wien:
Flödl Peter
Graf Wolfram
Habersack Helmut
Haimann Marlene
Hauer Christoph
Holzapfel Patrick
Leitner Patrick
Schletterer Martin
Wagner Beatrice

Find related publications in this database (Keywords)
reservoir management
flushing vs. controlled drawdown
fine sediment dynamics
aquatic biota

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