Columbia River
Yellow Mineral / Hump island – Mt St H 43m
Source Data
Left bank: Yellow Mineral
Right bank: Hump island - Mt St H 43m
Notes: Fisher Island Slough
Memorial Contribution
Documented by Robert Heacock (1957–2025), from Wind Hard from the West: The Lewis and Clark Expedition on the Snake and Columbia Rivers (2015), used by permission of his family.
