Wann ist ein Rechen ein Fischschutzrechen?
Die funktionalen Elemente eines Fischschutzsystems
- Publication
- Citation
Wagner, Falko 2021: Wann ist ein Rechen ein Fischschutzrechen? Die funktionalen Elemente eines Fischschutzsystems. Institut für Gewässerökologie & Fischereibiologie Jena: Jena.
This fact sheet examines the functional elements of a fish protection system and explains when a rake is a fish protection rake. The fact sheet "Wann ist ein Rechen ein Fischschutzrechen? (When is a rake a fish protection rake?)" is available for download.
The key messages of Fact Sheet No. 05 are:
- It is mandatory that a fish protection system at both new and existing hydropower facilities perform three functions: Blocking, guiding, and diverting.
- In fish protection systems, fish screens and bypasses form a functional unit. Screens without bypasses or bypasses without suitable screens do not constitute a protection system.
- Horizontally inclined fish protection screens guide fish across the entire water column to the bypass. The fish can remain in their natural swimming horizon.
- Vertically angled fish screens can direct fish to bypass entrances or collection devices near the surface across the entire width of the turbine inlet.