The Klamath River Dams Are Gone. The Salmon Came Back Faster Than Anyone Expected.

For over a century, the Klamath River was a shadow of its former self. A series of hydroelectric dams built in the early 1900s had turned one of the most productive salmon habitats in the country into a dying waterway. The fish were cut off from more than 400 miles of spawning grounds. The water grew toxic. And the dams themselves were barely producing power. Something had to give.

In 2024, after years of advocacy from Indigenous tribes and environmental groups, engineers with the Klamath River Renewal Corporation finally brought the dams down. They used explosives to demolish four key structures along the Oregon-California border. It was one of the largest dam removal projects in history, costing more than $450 million. But the payoff, it turns out, was almost immediate.

What happened to the salmon after the dams came down?

Scientists had high hopes for the river's recovery. But even the most optimistic models were blown out of the water. Within days of the demolition, thousands of salmon began swimming upstream. By the 2025 season, nearly 70,000 salmon had returned to the river and its tributaries. That is 180 percent of what researchers had projected.

Barry McCovey Jr., director of the Yurok Tribal Fisheries Department, told the San Francisco Chronicle that the speed and scale of the recovery exceeded all expectations. He called it proof that when the barriers fall, nature has an incredible power to heal itself.

The fish are not just coming back in numbers. They are also returning to parts of the river they had not seen in a hundred years. The removal of the dams reopened more than 400 miles of river, giving salmon room to swim, spawn, and thrive.

How did the water quality change?

The dams did more than block fish. They also degraded the river's health. While the dams were in place, 58 percent of water samples failed to meet public safety standards. Toxic algae blooms were a recurring problem. After the dams were removed, every single sample passed the test. The river is still prone to algae in some areas, but the improvement has been dramatic.

What about the land around the river?

The benefits of dam removal are not limited to the water. Some 1,300 acres of land that were once submerged under reservoirs are now being replanted with native vegetation. Crews have planted 19 billion seeds to restore the landscape. Birds are returning to build nests. And perhaps most strikingly, the river has found its old path again. The water seems to remember where it used to flow, cutting through a century of sediment as if the dams were just a brief interruption.

Why does this matter for the rest of the country?

The Klamath River project is part of a larger trend. Across the United States and around the world, old and unsafe dams are being removed. The logic is simple: flowing rivers stay cooler as the climate warms, their ecosystems are more resilient to floods and droughts, and they support more life. As Fernández-Garrido, a senior grants manager for the European Open Rivers Programme, told CNN, it is always safer and more cost-effective to work with nature rather than against it.

What can we learn from the Klamath River?

This story is a reminder that environmental restoration is not just possible. It can work faster and better than we expect. The Klamath River's recovery is a win for salmon, for the Yurok Tribe, for clean water, and for anyone who believes that public policy should prioritize long-term health over short-term convenience. It is also a case study in what happens when communities organize, scientists advocate, and governments act.

Frequently asked questions

How many dams were removed on the Klamath River?

Four hydroelectric dams were removed in 2024 as part of the Klamath River Renewal Project.

How much did the dam removal project cost?

The total cost was more than $450 million, making it one of the largest dam removal and river restoration projects in history.

How quickly did the salmon population recover?

Salmon began returning within days of the demolition. By 2025, nearly 70,000 salmon had returned, exceeding scientific projections by 80 percent.

Did the water quality improve after the dams were removed?

Yes. Before removal, 58 percent of water samples failed safety standards. After removal, 100 percent of samples passed.