The data for returning PIT-tagged wild Chinook jacks and adults detected at LGR (source site NA) for out-migration year 2011 is incomplete until 3-salt returns occur at LGR.
The data for returning PIT-tagged hatchery Chinook jacks and adults detected at LGR from source sites MCCA, IMNA, RAPH, DWOR, SAWT, PAHH, CLWH and CATH for out-migration year 2011 is incomplete until 3-salt returns occur at LGR, and includes 2-salts through Sept 15, 2013.
1-salt adult returns (my+1) of Chinook are typically precocious males and refered to as "jacks".
Although returning adults were detected at LGR, they were aged based on when they likely entered the hydrosystem. In particular for steelhead, adult detections at Bonneville aid in assigning age or "salt". For cases without adult Bonneville detection, adult summer steelhead passing Lower Granite Dam during the spring are assumed to have passed Bonneville during the preceding calendar year.
Click here for CSS returning adult age composition metadata, including a definition of each of the field names.
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