For over a century, one of the most important salmon runs in the U.S. has had to contend with historic dams in Oregon and California. These dams have been responsible for the death of hundreds of thousands of salmon and multiple species due to poorer water quality, toxic algae, unbearable temperatures, and loss of spawning grounds.

In the largest river restoration project in America, 4 dams are slated for removal starting next year, to be completed by 2023. This will return 400 stream miles of river to a more natural condition and is expected to save the fishery, which has struggled for decades to survive in increasing worse conditions, leading to multiple commercial fishing seasons being cancelled and more being shortened severely.

The salmon run is the base of the food chain in our northern forests, providing food for animals and nutrients for the forests themselves. Without a healthy salmon population, a healthy forest is not possible. The same is true for native people, who survive on the salmon run.

There is hope that, without further delays, this project, decades in the making, will be complete in time to save the last few salmon species left in the Klamath, many are lost already.

https://www.bbc.com/future/article/20201110-the-largest-dam-removal-project-in-american-history