Ecological upgrading of stream landscapes as a contribution to flood protection

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The idea of the project is to enable the streams and rivers to retain water longer in the landscape by means of restoration measures of various types of stream landscapes and thus to allow water to be leaked and, in case of heavy rain, to be able to absorb more water from the volume of the streambed. The ecological upgrading of the creek landscapes with green infrastructure creates healthier ecosystems with greater biodiversity and new habitat for these species. In the project, restoration measures will be carried out on 4 different streams, which largely restore the natural ecosystems and also contribute to flood protection. These 4 stream landscapes are the Great Kößlbach, where the natural meander is to be restored in the upper stream; in the estuary of the Saagbach into the Danube, an ecologically valuable stream-cooled bay for juvenile fish is to be created; at Simbach, the dam relocation in the estuary also aims to ecologically enhance the cobbled coagulation by running pendulum and structuring; High waters of the Inn are stowing in the area of the Perach power plant into the polder area of the Weitbach and the Westerndorfer Graben, here a natural expansion of the floodplain is to be created. The contribution to flood protection by means of restoration measures in a single stream landscape is naturally only of local importance and only a very small contribution to the overall necessary flood protection. Therefore, beyond the individual measures, the project should also contribute to raising awareness among municipal leaders (expert conference, information event for municipalities). If many restoration measures are carried out on stream landscapes in the future, a large contribution can be made to flood protection in the eastern Bavarian border region.

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