A river sacrificed - In Washington, helping one fish has meant harming another
Forced by a federal court decision to develop a way to manage water that would help Yakima River spring chinook recover, fish biologists invented the system called "flip-flop," which alternates flows in the Yakima and Naches rivers to serve both farming and fish. And for a while, it seemed to work: Farmers got their water in the key late-summer and early-fall dry periods, and the spring chinook rebounded, albeit modestly.
Unfortunately the strategy had a negative impact on native steelhead and new research suggests the flip-flop may also take an unexpected toll on the Yakima spring chinook, the very fish it was designed to protect.
Via: High Country News LINK