[3] The movement argues that the dams should be removed because they create toxic algal blooms, dwindle salmon numbers and create illness in the fish, threaten tribal subsistence and increase health risks for tribal members, and harm the West Coast fishing industry.
Copco #2 dam was completed in 1925, resulting the in the dewatering of 1.7 miles of historic river channel in Ward's Canyon.
The construction of two more hydroelectric dams, (J.C. Boyle in 1958 and Iron Gate in 1964) further reduced accessible fish habitat on the Klamath river, further degrading Indigenous lifeways and culture.
Ron Reed, a member of the mid-Klamath Karuk Tribe, recalled that the river was the source of fish and other foods for his family into the 1960s, when the final dam, Iron Gate, was completed.
In 1979, the Supreme Court upheld a 1974 decision "that the tribes were entitled to 50 percent of harvestable salmon and that they should become co-managers of state fisheries," which brought an end to the conflict.
Chronic unemployment, despair and addictions rose in the gap left by the vanishing life in the river," as stated by Diana Hartel, who documents how settler presence and the dams have been destructive to Indigenous health through the "collapse of First Nations fisheries [which] had brought deepening poverty and with it soaring rates of diabetes."
As stated by Craig Tucker, consultant for the Karuk tribe, "the fish kill of '02 was sort of the same time the licenses to operate the dams expired...
"[5] At an October 2008 meeting of the California State Water Resources Control Board, it was noted that "Coho, chinook, steelhead, Pacific lamprey and green sturgeon could disappear from the watershed forever" if the dams were to stay up.
In a reflection published in 2011, Hartel, who is related to people within the opposition movement, states that "their arguments had a lot to do with settler pride of place, how we took this wild river and made it useful—building cheap hydropower, irrigating onions, growing potatoes for Frito-Lay, watering livestock.
[17] On February 8, 2017, a federal district court judge ruled in favor of removing the dams and agreed to a plan created by tribal scientists which would reduce outbreaks of disease among fish which had reportedly infected 90% of juvenile salmon between 2014 and 2015.
The amended agreement led to the creation of the Klamath River Renewal Corporation (KRRC), which would now apply for complete license transfer from PacifiCorp.
[20] In April 2020, the California Water Board approved two key permits for removing the four large aging hydropower dams on the Klamath River.
The board came to this conclusion "based on evidence that dam removal would improve drinking water quality by reducing algal blooms, and would restore habitat for endangered salmon and other organisms that rely on free-flowing rivers."
[22][23] January 2024 marked a major milestone when work crews started to release water that had been held back for the first time in a century.
[26] In the largest river restoration in U.S. history,[27] contractor Resource Environmental Solutions (RES) and area tribes will plant up to 19 billion seeds.
[29] Director of the Yurok fisheries Barry McCovey said that he guessed the recovery might last longer than he will be alive, but the "tribes' long efforts are for their grandchildren and generations to come.
[31] "Salmon always gave us the physical and mental strength to carry out these arts" said Tori McConnell, the 2023 Miss Indian World.