Lewis and Clark's Columbia River
Lewis & Clark's Columbia River - "200 Years Later"
"Threemile and Sixmile Canyon, Oregon"
Includes ... Threemile Canyon ... Sixmile Canyon ...
Image, 2015, To come, Oregon, click to enlarge
Click image to enlarge
Threemile and Sixmile Canyons, Oregon. (to come) Image taken _____.

Threemile and Sixmile Canyons ...
Threemile and Sixmile Canyons are located in Morrow County, Oregon, and lie at Columbia River Miles (RM) 255.5 and RM 259 respectively. Downstream is Willow Creek (RM 252.5) and upstream is the historic town of Castle Rock. Further upstream is the Oregon community of Boardman. On the Washington side of the Columbia lies Alder Creek. Both Threemile Canyon and Sixmile Canyon were named because of their distances from the mouth of Willow Creek.

From the Journals of Lewis and Clark ...

Clark, ...

Columbia PlateauReturn to

*River Miles [RM] are approximate, in statute miles, and were determined from USGS topo maps, obtained from NOAA nautical charts, or obtained from the U.S. Army Corps of Engineers website, 2003


All Lewis and Clark quotations from Gary Moulton editions of the Lewis and Clark Journals, University of Nebraska Press, all attempts have been made to type the quotations exactly as in the Moulton editions, however typing errors introduced by this web author cannot be ruled out; location interpretation from variety of sources, including this website author.
September 2015