Figure 1From: Survival of seaward-migrating PIT and acoustic-tagged juvenile Chinook salmon in the Snake and Columbia Rivers: an evaluation of length-specific tagging effects Study map. A map of dams on the Snake and Columbia Rivers in the Pacific Northwest of the United States. Acoustic tagging of yearling and subyearling Chinook salmon occurred at Lower Granite Dam and fish were detected at points on or near subsequent downstream dams.Back to article page