Fish fights in the Pacific Northwest. A tale as old as time. (And, despite being a techno-optimist, it's clear to me that more tech is not always better.)

‘Killing salmon to lose money’: A costly, questionable plan on the Willamette
The U.S. Army Corps of Engineer has ruled out opening Willamette River dams and letting fish coast the natural current to help improve survival numbers. It would cost next to nothing and has worked before. The Corps says a costly fish collection machine is the only way to save salmon without disrupting dam operations essential to hydropower customers, farmers and boaters. But in documents and interviews, those users say they can go without.
opb.org