| Environment
connectivity for migratory fish. Leppikoski is one of these key national sites assessed by authorities since there are potential spawning grounds and habitats above the hydropower plant. Access to sufficient spawning grounds and habitats is a prerequisite for the natural life cycle of migrating fish. To enable strengthening of the natural life cycle of migratory fish, a variety of different tools and measures are needed. Each river and hydropower plant are unique, and thus solutions vary by river and hydropower plant. Fishheart is a good alternative for enabling fish migration at hydropower plants such as Leppikoski with tightly built surroundings around the power plant. The Fishheart installation is a floating
solution that does not require a lot of space on the ground.
Floating fishway The floating hydraulic Fishheart fishway unit is
designed to be installed on the downstream side of a dam close to turbine outlets where fish naturally gather. The floating solution enables positioning and repositioning of Fishheart to the best fish migration route. The Fishheart unit connects to tubes passing over the dam with inlet and outlet lines. Water from the upstream side of the dam is fed into the tubing through the inlet line utilising the siphoning effect. An attraction flow tubing atop Fishheart also runs on siphoned f
Top main images: Leppikoski dam includes two embankment and a concrete dam
Left: Leppikoski hydropower plant is located along the Emäjoki river in the Oulujoki river shed. The output of the power plant is 25MW and the head is 11.1-13.3m
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