Global Range: This species has the widest natural range of all the Pacific salmon species. In Asia, the range extends from Korea north to the Arctic Ocean and west along the coast of northern Asia to the Lena River/Laptev Sea. In North America, chum salmon occurred historically from the Sacramento River drainage, California (rarely the San Lorenzo River, southern California), to northwestern Alaska, and east along the arctic coast to the Anderson and Mackenzie rivers, Northwest Territories (Salo 1991). The species is now rare or locally extirpated from southern Oregon southward. Immatures are widely distributed over the North Pacific Ocean. See Frissell (1993) for a map indicating present and former distribution in the Pacific Northwest and California.
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