Copco 1

FILE - In this March 3, 2020 file photo, excess water spills over the top of a dam on the lower Klamath River known as Copco 1 near Hornbrook, Calif. A plan to demolish four dams on California's second-largest river to benefit threatened salmon has sharpened a decades-old dispute over who has the biggest claim to the river's life-giving waters. Federal regulators on Thursday, July 16, 2020, threw a significant curveball at a coalition that has been planning for years to demolish four massive hydroelectric dams on a river along the Oregon-California border to save salmon. (AP Photo/Gillian Flaccus, File)