在美國加州，為恢復河流生態系統，讓三文魚及其他物種能再次遷徙，克拉馬斯河沿岸的四座水壩最近已被拆除。這些水壩建於 1918 – 1962 年期間，用於發電。水壩拆除後，該計畫將重新種植原生植被及重塑河道，以改善三文魚及其他物種的棲息地，並會記錄和追蹤魚類的遷徙活動。

In California, four dams along the Klamath River were removed to restore the river ecosystem, allowing species like the salmons to migrate again. These dams were built between 1918-1962 for generating electricity. After the removal, the project will replant native vegetation and reshape the river channel to improve habitats for salmons and other species as well as monitoring program to record and track fish migrations.

https://www.opb.org/article/2024/10/18/salmon-return-klamath-basin-oregon-dam-removal/