Ultrasound can save fish in hydropower rivers

The phenomenon of gas supersaturation occurs when air enters water-filled hydropower inlets and is then exposed to high pressure. When this water is subsequently released into the river below the hydropower plant, it's almost ...

Toward more fish-friendly hydropower plants

Over the course of the EU project FIThydro, research and industry partners studied the ecological impact of hydropower plants. ETH Zurich's Laboratory of Hydraulics, Hydrology and Glaciology (VAW) has developed a protection ...

Himalayan glacier disaster highlights climate change risks

When Ravi Chopra saw the devastating deluge of water and debris crash downstream from a Himalayan glacier on Sunday, his first thought was that this was exactly the scenario that his team had warned the Indian government ...

Let me flow: Bosnians wage war on mini hydro plants

Looking out over the clear cascades of the Neretvica river in the heart of Bosnia, Safet Sarajlic says he is ready to spill his blood to defend the waterway from a hydropower project threatening its vital ecosystem.

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