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Recovery of Salmon & Steelhead in California and Southern Oregon |
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Adult Chinook, Lindsay Creek, 2004
Juvenile Chinook in Hatchery.
07/16/2008 |
Chinook Salmon
in California
California Coast Chinook Salmon ESU is the southernmost portion of the species’ North American range. Chinook display diverse life histories, especially in timing of return migration; hence their runs are classified by season, such as “spring” or “fall”. Juveniles also have different migration patterns, with some migrating to the ocean shortly after emerging from their spawning beds and others spending a year or more in streams before migrating to the ocean. Chinook face threats similar to steelhead within the Recovery Domain. Most of these threats are associated with habitat loss and water quality and quantity challenges. (For more information see NW Regional Office)
In the Sacramento River Winter-run Chinook is comprised of a single extant population. Spring-run Chinook have been reduced from seventeen historic populations to three, with total current spawners varying from 500 to over 4,500. (For more information see NW Regional Office) Central Valley Spring-run Chinook Listed as a threatened species on September 16, 1999; threatened status reaffirmed on June 28, 2005. The ESU includes all naturally spawned populations of spring-run Chinook salmon in the Sacramento River and its tributaries in California, including the Feather River, as well as the Feather River Hatchery spring-run Chinook program. (For More information see NW Regional Office) Central Valley Fall and Late Fall-run Chinook Listing not warranted on September 16, 1999 but classified as a Species of Concern on April 15, 2004 due to specific risk factors. The ESU includes all naturally spawned populations of fall-run Chinook salmon in the Sacramento and San Joaquin River Basins and their tributaries, east of Carquinez Strait, California. |
