The Clean Water Act prohibits the Columbia River from rising over 68F (20C). They either make it or they die.”The video released by Columbia Riverkeeper shows the injuries to the sockeye salmon. VandenHeuvel said it was too early to say exactly how many salmon have died as a result of the hot water. And given that Snake River sockeye are already considered endangered, the death of just a small section of their population could have dire effects. A sockeye salmon in the Columbia river that died as a result of hot river temperatures.

Source: The Guardian July 27, 2021 15:56 UTC