Company information

Concern about fish mortality in pumping stations

During a visit to a pumping station in 2002 Marcel Klinge, fishbiologist at Witteveen+Bos Consulting Engineers, discovered large scale fish mortality at the station. Shortly afterwards he expressed his concern about fish mortality in pumping stations to Gerard Manshanden, professional fisherman at Lake IJsselmeer. Gerard told Marcel that he happened to just have had an idea for a fishpassage to safely guide fish around the potentially lethal pumps of pumping stations! They decided to work out the idea together. The cooperation has resulted in the construction of the first “fishway for pumping stations” in the Meerweg pumping station, near Groningen in the conservancy area of the Hunze en Aa’s Waterboard, in 2005.

FishFlow Innovations B.V.

The cooperation between G.A.M. Manshanden Productie B.V. and Witteveen+Bos Consulting Engineers has been formalised In a joint-venture. In october 2006 the company FishFlow Innovations B.V., of which both G.A.M. Manshanden Productie B.V. and Witteveen+Bos Consulting Engineers are shareholders, was launched. As of January 1st 2012 FishFlow Innovations will be fully owned by G.A.M. Manshanden Productie B.V.