Anadromous (uh-nad-ru-mus) fish species are ones that spend most of their lives in the ocean but reproduce in fresh water.
For the purposes of the Central Valley Project Improvement Act (CVPIA), anadromous fish are "...those stocks of salmon (including steelhead), striped bass, sturgeon, and American shad that ascend the Sacramento and San Joaquin rivers and their tributaries and the Sacramento-San Joaquin Delta to reproduce after maturing in San Francisco Bay or the Pacific Ocean."
The Anadromous Fish Restoration Program has determined that in the context of the CVPIA, the use of the term "salmon" refer to four stocks of Chinook salmon which include fall-, late fall-, winter-, and spring-run Chinook salmon.
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