Aquatic Control Engineering

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Fish Deterrent Systems

Surface water is heavily abstracted by power, water and industrial manufacturing companies throughout the world.  This abstraction is commercially necessary and much legislation is in place to balance its ecological and environmental impact, however these pumps are still responsible for high levels of fish mortality.  Fish deterrent systems reduce the cost for industry in screen and pump cleaning and increased water quality processes whilst reducing the mortality of fish at ANY WATER INTAKE including pumping stations, hydropower turbines, cooling water intakes and many more. 

Using Natures Response

Fish have a natural aversion to bright stroboscopic light, thus with the application of bright stroboscopic lights, fish can be kept away from water intakes.  The Fish Deterrent Light system consists of a number of horizontal or vertical tubes where Fish Deterrent Lights are placed.  The positioning of the lights inside the tubes prevents damage and protects the lights from plant and mollusc on-growth.  Positioning of the lights is based upon the quality and turbidity of the water, the type of fish and the design of the system for which deterrent is required.

Key Design and Operational Features

- Strobe Light Design
- Acoustic Fish Deterrent Options Also Available
- Low Maintenance
- Long Design Life and Warranty

Research, Development and Testing

- Designed using the latest research on fish behaviour ensuring the highest fish deterrent rate
- Conforms to Environment Agency good practice guidelines
- Testing by IMARES Wageningen UR reported 10x fewer eels approaching Ijmuiden Pumping Station, Holland following the installation of these Fish Deterrent    Lights 2011.
- Meerweg te Haren pumping station Strobe lights in conjunction with Venturi bypass allowed 8,272 fish out of 8,332 fish safe passage around the pumping station.  This is a 0.6% mortality rate in 75 days.

For further information please download our Fish Deterrent Strobe Light Leaflet below or see our case study of Welches Dam, purchased by the Environment Agency