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KRIS Web Background Pages: Hatcheries

The Ten Mile River has a history of supplementation dating back to the 1950s, including the introduction of coho, steelhead and chinook salmon stocks from out of basin, and a small scale supplementation project using Ten Mile River coho and steelhead. The two principal sources of information are Jerry Ayers, small scale hatchery coordinator for the California Department of Fish and Game and Salmon Restoration Association memos (Maahs, 1999).

The  Since 1991 the SRA has planted coho salmon and steelhead fry, which are of native origin, from adult broodstock captured at weirs in three locations in the basin. Steelhead caught by sportsmen on hook and line were also used as broodstock.  CDFG planted coho and steelhead from 1955 through 1977 and likely did not use locally adapted stock, which can have negative consequences for wild fish (see Hatcheries background page.). Chinook salmon juveniles were also imported but the effort to establish a self-perpetuating run in the Ten Mile River failed. Coho salmon were trapped in 1995 but no fish were released because they became infected with bacterial kidney disease and had to be destroyed (See Fish Diseases)..

The number of juveniles planted juvenile salmon and steelhead planted in the Ten Mile River by the California Department of Fish and Game and, more recently, the Salmon Restoration Association (SRA) is show at left.  See Info Links for more information and for links to other resources. Data supplied by the California Department of Fish and Game.

References

Maahs, M. 1999. Fort Bragg's World's Biggest Salmon BBQ: a brief history of the Salmon Restoration Association and their work. Salmon Restoration Association. Fort Bragg, CA.