Salmon Stocking in California: What Rivers Get Planted and When

When people talk about salmon stocking in California, most are thinking about a trout-style program where catchable fish are planted into rivers for immediate sport. Salmon stocking works completely differently. The state and federal hatcheries in California raise Chinook and Coho salmon from eggs to juvenile smolt size, then release them into rivers to migrate to the ocean. Those fish spend one to three years in the Pacific, then return to their natal rivers as adults to spawn. The stocked fish you catch in the fall are the same fish that were released as 5-inch smolts several years earlier.

Understanding this distinction matters for trip planning. You cannot fish for salmon the week after a release the way you would target trout after a plant. The hatchery system creates the runs anglers fish in fall. The release schedule creates those runs years in advance.

California's Major Salmon Hatcheries

Coleman National Fish Hatchery

Located on Battle Creek in Shasta County, Coleman is operated by the U.S. Fish and Wildlife Service and is one of the largest Chinook salmon hatcheries in the world. It produces fall-run Chinook primarily and releases smolts into the upper Sacramento River drainage each spring. Coleman fish contribute significantly to both the commercial salmon fishery off the California and Oregon coasts and the in-river sport fishery on the Sacramento and American rivers in fall.

Feather River Hatchery

Located below Oroville Dam in Butte County, the Feather River Hatchery is operated by CDFW and focuses on fall-run Chinook. Smolt releases go into the Feather River each spring. Adults return in fall and stack up below the hatchery's fish ladder, creating one of the most accessible urban salmon fisheries in the state. The stretch of the Feather River from the hatchery downstream to the Sacramento River confluence is heavily fished each October and November.

Nimbus Fish Hatchery

Located on the American River just below Nimbus Dam in Sacramento County, Nimbus is operated by CDFW and produces fall-run Chinook. Smolts are released into the lower American River each spring. Adult returns to the American River create the famous fall salmon run through Sacramento, including the stretch at Discovery Park where the American River meets the Sacramento.

Mokelumne River Hatchery

Operated by the East Bay Municipal Utility District (EBMUD) in partnership with CDFW, the Mokelumne River Hatchery produces fall-run Chinook for the Mokelumne River. Smolt releases go into the lower Mokelumne near Clements. Adult returns in fall draw anglers to the lower river below Camanche Reservoir.

Which Rivers Receive Smolt Releases

The primary rivers that receive hatchery smolt releases in California include:

• Sacramento River: receives smolts from Coleman and contributes the bulk of California's salmon returns; the main stem between Red Bluff and Sacramento fishes for adult Chinook in fall
• American River: Nimbus releases create the urban Sacramento fishery; the lower 23 miles below Nimbus Dam are accessible by bank and boat
• Feather River: Feather River Hatchery releases; the lower river and Verona confluence area fish well in October and November
• Mokelumne River: smaller run from EBMUD hatchery; lower river near Lodi fishes in fall
• Trinity River: restoration-focused releases from Trinity River Hatchery support both wild fish recovery and a fall sport fishery; the Trinity fishes for both Chinook and steelhead

Fall Chinook Run Timing

Adult Chinook begin entering California rivers from the ocean as early as late August on some systems, with peak returns typically running from September through November. The Sacramento River sees its strongest fishing from Red Bluff downstream through October. The American River below Nimbus Dam fishes best from mid-September through November. The Feather River near the hatchery is most productive in October and into December.

Run timing varies year to year based on ocean conditions, water temperature in the rivers, and rainfall that opens river bars near the ocean. In drought years, low water can delay or concentrate runs in unusual ways. In strong water years, fish spread out more and the fishery can extend further upstream.

Coho Salmon in California

Coho salmon (Oncorhynchus kisutch) are a different story. Most California Coho populations are listed under the Endangered Species Act, and recreational fishing for Coho is either closed or heavily restricted on nearly every California river. The Klamath and Trinity rivers have some limited hatchery Coho supplementation as part of recovery programs, but these fish are not available for general sport fishing. Always check current CDFW regulations before fishing any river where Coho might be present.

Kokanee: The Lake-Bound Exception

Kokanee are landlocked sockeye salmon that complete their entire life cycle in freshwater. CDFW stocks kokanee into several California reservoirs, including Shasta Lake, Whiskeytown Lake, Donner Lake, and Stampede Reservoir. These are put-and-grow fish: stocked as juveniles, they feed in the lake for one to three years before reaching catchable size (typically 10 to 16 inches). Unlike anadromous salmon, kokanee spend their lives in the lake and are caught by trolling with small flasher and hoochie or wedding ring combinations.

For a deeper look at the species themselves, the California salmon species guide covers Chinook, Coho, and Kokanee identification, life cycles, and where each is found in the state.

Fishing Regulations for Salmon

Salmon regulations in California are among the most complex in freshwater fishing. Season dates, gear restrictions (single barbless hooks on many rivers), bait prohibitions, and closures vary by river, run, and year. CDFW publishes updated regulations each year. Check the current Sport Fishing Regulations on the CDFW website before fishing any river for salmon, and pay specific attention to whether the section you plan to fish has restrictions on hatchery-marked versus wild fish retention.