Fish bypass at Greifenstein power plant
The Greifenstein power plant is getting a near-natural bypass stream as a fish bypass. Over a distance of more than 4 kilometres, the fish will find a new habitat and a convenient way to swim around the power plant.
The new fish pass runs independently of the famous “Gießgang” watercourse in the Greifensteiner Au wetlands. Especially challenging is the design of the entry point, whose guiding current must be sufficient to show fish the way for a wide range of different water levels. The 4.4 kilometre-long bypass stream overcomes the difference in height at the Greifenstein power plant and also offers habitat and spawning grounds for the main species of fish that live in the Danube. The attractive design includes shallow and deep sections, gravel banks and areas of coarse woody debris, in order to create space for the widest range of species.