Lewis and Clark's Columbia River
Lewis & Clark's Columbia River - "200 Years Later"
"Greenleaf Creek and Greenleaf Slough, Washington"
Includes ... Greenleaf Creek ... Greenleaf Slough ... Greenleaf Lake ...
Image, 2014, Greenleaf Slough, North Bonneville, Washington click to enlarge
Click image to enlarge 		Greenleaf Slough, North Bonneville, Washington. Image taken March 21, 2014.


Greenleaf Creek and Greenleaf Slough ...
Greenleaf Creek heads on the north and east flanks of Table Mountain, west of Greenleaf Peak and the Red Bluffs, and flows south across Greenleaf Basin. It becomes Greenleaf Slough (also known as Greenleaf Lake) near North Bonneville, at approximately Columbia River Mile (RM) 144. Greenleaf Slough then flows southwest where it merges with and becomes Hamilton Creek. Greenleaf Slough was at one time was the channel separating Hamilton Island and the Washington mainland. Hamilton Creek enters the Columbia River at approximately Columbia River Mile (RM) 143.

Lewis and Clark and Greenleaf Slough ...
Lewis and Clark passed by Hamilton Island on October 31, 1805, calling Hamilton Island "Strawberry Island". They make mention of a dry brook and narrow channel forming the Island, part of the Greenleaf Creek/Greenleaf Slough/Hamilton Creek system.

"... a Brook falls into the narrow Chanel which forms the Strawberry Island, which at this time has no running water, but has every appearance of dischargeing emence torrents ..." [Clark, October 31, 1805]

Greenleaf Creek/Greenleaf Slough/Hamilton Creek ...
Today Greenleaf Creek flows into Greenleaf Slough which then flows southwest where it merges with and becomes Hamilton Creek. All three of those names have appeared on maps as names for this drainage system which once made Hamilton Island an "island".

An 1860 cadastral survey (tax survey) map for T2N R7E show's the "Hamilton Creek" name on today's the Greenleaf Slough and lower Hamilton Creek, forming the north/northwestern channel separating Hamilton Island from the Washington mainland.


Views ...

Image, 2014, Hamilton Creek, North Bonneville, Washington click to enlarge
Click image to enlarge 		Greenleaf Creek where it joins Hamilton Creek. Looking upstream from Evergreen Drive Bridge, North Bonneville, Washington. Image taken March 21, 2014.
Image, 2019, Greenleaf Slough, North Bonneville, Washington click to enlarge
Click image to enlarge 		Greenleaf Slough, North Bonneville, Washington. Image taken July 29, 2019.
Image, 2015, North Bonneville, Washington, click to enlarge
Click image to enlarge 		Greenleaf Slough, North Bonneville, Washington. Image taken October 22, 2015.


From the Journals of Lewis and Clark ...

Clark, October 31, 1805 ...



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*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

Sources:
  • U.S. Bureau of Land Management's General Land Office (GLO) Records database, 2014;


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.
/Regions/Places/greenleaf_slough.html
June 2014