Author(s): S. Heimerl; M. Redeker

Linked Author(s): Stephan Heimerl

Keywords: Fish passage restoration; Fish pass design; Fishway design; Fish pass entrance; Fish pass attraction

Abstract: Worldwide fish passage has increasingly been restored during the last three decades by retrofitting barriers with fish passes. The accessibility and functionality of the entrance are key factors in the efficiency of fish passes. However, the knowledge of the behaviour of the different fish species as well as the entrance design is still insufficient with regards to migration barriers in large rivers with high flows and complex hydraulic conditions. Barriers in large rivers with confined space conditions, difficult topographies, and/or hydraulic structures typically require fish passes with surplus attraction flow at the entrance. Within the framework of the design of large fish passes on European waterways, an innovative fish pass entrance concept and system elements have been developed.

DOI: https://doi.org/10.15142/T3WS9R

Year: 2018