Photo: Pusher, Inc.

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Explore the Shasta Cascade projects

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17 projects



Three featured watersheds, one regional approach.

Photo: Pusher, Inc.

Rivers like the McCloud, Fall, Scott, and Shasta, together with Sacramento River tributaries such as Battle Creek and Big Chico Creek, and the upper Klamath itself, have sustained coho and Chinook salmon, steelhead, and native trout for millennia. But a century of dam-building, water diversion, mining legacies, and logging has fragmented these rivers — blocking fish from historic spawning grounds and warming the cold-water refuges salmon depend on to survive.

Yet the Shasta Cascade also holds some of California’s greatest opportunities for recovery. The removal of four dams on the Klamath — the largest dam removal in U.S. history — has already reopened more than 400 miles of salmon habitat, while fish passage projects on Battle Creek and Big Chico Creek’s Iron Canyon are reconnecting spring-fed spawning grounds cut off for generations. With abundant cold water, deep Tribal stewardship, and a growing coalition of agencies, Tribes, and landowners working stream by stream, CalTrout’s regional team is protecting what remains healthy while restoring what’s been lost — building a more climate-resilient future for fish and the communities who depend on these rivers.

Photo: Shane Anderson, Swiftwater Films

FEATURED project


Tracking the largest dam removal and river recovery in U.S. history.

As the Klamath reconnects after dam removal, understanding how the ecosystem responds is paramount. Our monitoring program combines sonar imaging, radio telemetry, netting, and spawner surveys to track how salmon and steelhead recolonize hundreds of miles of newly accessible habitat.

One year after dam removal, CalTrout’s team of more than 20 partners counted over 13,000 Chinook salmon migrating upstream of the former Iron Gate Dam — more than double the 2024 count. Some fish have reached more than 360 river miles from the ocean, into the Upper Klamath Basin for the first time in over a century.

The work answers questions scientists have only theorized about — which tributaries matter most for recovery, how cold-water refuges respond to reopening, and what restoration actions will have the greatest long-term impact. What we learn in the Klamath will shape how we understand river recovery — not just here, but around the world.

Support work in the Shasta Cascade & beyond.

At California Trout, our goal is to restore vibrance and abundance to California’s freshwater ecosystems, and to keep them that way for years to come. Join us in building a future where wild fish and clean water remain a defining part of California.

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