Chinook Salmon
Photo: Unknown author, Public domain
Lewis and Clark first encountered massive runs of chinook salmon near the confluence of the Snake and Columbia Rivers in mid-October 1805. Clark was confused by the enormous numbers of dead salmon lining the riverbanks, writing “The Cause of the emence numbers of dead Salmon I can’t account for” — he was witnessing the post-spawning die-off. Salmon were a critical food source traded from Native peoples throughout the Columbia Basin. The chinook is the largest Pacific salmon species.
Journal Excerpt
Clark, October 17, 1805: "I observe in assending great numbers of Salmon dead on the Shores, floating on the water and in the Bottoms which can be seen at the debth of 20 feet. the Cause of the emence numbers of dead Salmon I can't account for."
Journal References
15 journal entries mention Chinook Salmon