Columbia River

Clatsop Spit / Chinook

Mile 5.0 Both Bank Geologic

Source Data

Left bank: Clatsop Spit

Right bank: Chinook

Notes: Mt St Helens 87 miles

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.

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