Geiger Fish Protection Technologies

The protection of fish and other aquatic life is a key issue when planning and operating cooling water intake structures at rivers, seas and oceans, for plants that use hydropower and for river pumping stations. The protection measures should be based on the EU flora-fauna habitat guidelines and the EPA CWA Rule 316b.

Our fish protection concepts are the result of the latest developments in mechanical and electrical engineering combined with decades of experience in screening technology. The perfectly harmonized measures ensure the sustainable use of surface water. 

Extensive test runs at water intake installations and under laboratory conditions prove the efficiency of GEIGER® Fish Protection Technologies. In recent years, the use of up-to-date sonar techniques has proven the efficiency of electric behavioural barriers. We are the solution provider for complex systems, ensuring the highest possible benefits for open channel water intake systems, for river pumping stations and other measures in water management.

The most effective fish protection measure is to prevent fish from entering the screening area using behavioural barriers. The combination of a proper civil structure design and the GEIGER® Fish Repelling System ensures that nearly all fish larger than 8-10 cm, as well as smaller fish are prevented from entering the plant water intake.

The arrangement and design of the first cleaning step (coarse screening) must allow enough space for small fish and larvae that have passed through the fish repelling zone. A special control system with defined stop positions and a slowly ascending cleaner carriage, allow the fish to pass the coarse screen.


Fields of Application

GEIGER® Fish Protection Systems can be installed in all water intake plants with a high population of fish, such as:

  • Water intake systems for power stations
  • Desalination plants
  • Pumping stations
  • Pump storage plants
  • Hydro-electric power plants
  • Industrial plants
  • Flooding plants

The specific requirements of a particular plant are carefully considered during the planning phase. For example, the water quality (its conductivity, temperature), the depth, the flow conditions.