Yearly Passage of the Run-at-Large of Wild Subyearling Fall Chinook
at Lower Granite Dam compared with PIT-tagged subpopulation ¹

Comparison of Historical Years (1993-1998)

¹ PIT-tagged wild subyearling fall chinook detected at Lower Granite Dam; tagged and released at regular intervals from April into July, or until water temperatures neared 20°C or catches neared zero, from 1993 to the present, by William P. Connor (U.S. Fish and Wildlife Service, Dworshak Fisheries Complex).