Event Title

Session D5 - Downstream Fish Migration Systems and Intake Structure Optimization & Possible Synergies

Location

UMass Amherst

Event Website

http://fishpassage.ecs.umass.edu/Conference2012/

Start Date

7-6-2012 2:10 PM

End Date

7-6-2012 2:30 PM

Description

An important aspect of the process of water body restoration deals with the recreation of the flow continuum. This includes enabling the up- and downstream migration of fish, which can be hindered by run-of-river power plants. Currently especially the downstream migration that is vital to the preservation of quite a few European fish species is negatively affected. The introduction of the revised Water Protection Act in January 2011 in Switzerland constitutes that the major damages caused by men to the ecosystem of the Swiss river systems will have to be rectified within the next 20 years. This is going to be a tremendous task for the energy companies and cantons alike. Therefore the Laboratory of Hydraulics, Hydrology and Glaciology (VAW) conducted hydraulic model tests on a water power station at the river Aare planned to supply the natural river arm with an increased residual discharge of 40 m3/s. To facilitate a save downstream fish migration a guidance screen with horizontal bars and a bypass system was tested. Simultaneously the intake structure was optimized for optimal turbine performance and it was found that both processes went hand in hand. The article gives an overview of the hydraulic model and test results will be presented.

This document is currently not available here.

Share

COinS
 
Jun 7th, 2:10 PM Jun 7th, 2:30 PM

Session D5 - Downstream Fish Migration Systems and Intake Structure Optimization & Possible Synergies

UMass Amherst

An important aspect of the process of water body restoration deals with the recreation of the flow continuum. This includes enabling the up- and downstream migration of fish, which can be hindered by run-of-river power plants. Currently especially the downstream migration that is vital to the preservation of quite a few European fish species is negatively affected. The introduction of the revised Water Protection Act in January 2011 in Switzerland constitutes that the major damages caused by men to the ecosystem of the Swiss river systems will have to be rectified within the next 20 years. This is going to be a tremendous task for the energy companies and cantons alike. Therefore the Laboratory of Hydraulics, Hydrology and Glaciology (VAW) conducted hydraulic model tests on a water power station at the river Aare planned to supply the natural river arm with an increased residual discharge of 40 m3/s. To facilitate a save downstream fish migration a guidance screen with horizontal bars and a bypass system was tested. Simultaneously the intake structure was optimized for optimal turbine performance and it was found that both processes went hand in hand. The article gives an overview of the hydraulic model and test results will be presented.

http://scholarworks.umass.edu/fishpassage_conference/2012/June7/21