You are using Internet Explorer 8 to view this site. IE8 is a 6-year-old browser that does not display modern web sites properly. Please upgrade to a newer browser to make best use of this site. Contact your local library branch if you require assistance. For more information, see this FAQ page.
The Columbia flows 1,250 miles from its source high in the mountains of British Columbia to its mouth at the Pacific Ocean. It is the only passageway to the interior of North America from the Pacific--making it the primary route for early nineteenth-century traders and settlers.