Fish pass at the Rosenheim power plant: The fish pass is currently being planned and suitable construction variants are being examined.
Numerous structural measures at the Rosenheim site were developed and implemented in intensive coordination talks with the responsible authorities and the local fishermen's associations. Due to its straightened banks, the Inn was severely impaired as a habitat for fish throughout the area of the dam. The removal of the straightened bank line and the creation of structures similar to the old course of the river have restored habitats, especially for juvenile fish habitats and other animal and plant species. The calm shallow water zones represent high-quality habitats and can be used by many fish inhabiting the Inn as flood and winter shelters. Newly created dry sites near the dyke can be colonised by species whose natural habitats are the gravel banks of former river arms. With the stone blocks of the rigid bank protection, new structures are to be created which, in addition to providing protection against erosion will also assume ecological functions, e.g. as reptile habitats.
