*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
- McArthur, L.A., and McArthur, L.L., 2003, Oregon Geographic Names, Oregon Historical Society Press, Portland;
- Tolan, T.L., Beeson, M.H., and Vogt, B.F., 1984, Exploring the Neogene History of the Columbia River: Discussion and Geologic Field Trip Guide to the Columbia River Gorge, Oregon Geology, vol.46, no.8, August 1984, and vol.46, no.9, September 1984, Published by the Oregon Department of Geology and Mineral Industries;
- U.S. Geological Survey Geographic Names Information System (GNIS) database, 2009;
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.