Lewis and Clark's Columbia River
Lewis & Clark's Columbia River - "200 Years Later"
"Signal Hill, Oregon"
Includes ... Signal Hill ...
Image, 2011, Oregon Trail, Signal Hill, Oregon, click to enlarge
Click image to enlarge
Oregon Trail below Signal Hill, east of The Dalles, Oregon. Information via volunteer guide, Horsethief Lake Park (Columbia Hills State Park), Washington. Image taken October 15, 2011.

Signal Hill ...
Signal Hill is located on the Oregon side of the Columbia River approximately between River Miles (RM) 193 and RM 195. The ridge trends in a SSW to NNE direction. Downstream of Signal Hill is the mouth of Fifteenmile Creek, The Dalles Dam, and the Oregon community of The Dalles. Upstream is Kaser Ridge, Fairbanks Gap and Fulton Ridge. Across the Columbia River on the Washington side is located Spearfish Lake and Horsethief Butte. Before the building of The Dalles Dam, Fivemile Rapids, also known as the "Long Narrows", was located at the base of Signal Hill.

Early Signal Hill ...
According to "Oregon Geographic Names" (McArthur and McArthur, 2003):

"Signal Hill is the rounded bluff one mile east of and overlooking the east abutment of The Dalles Dam. It was first named in 1956 in the USCE Foundation Report on The Dalles Dam. Since that time, it has been the site of numerous radio and other electronic installations that make the name even more significant."

The U.S. Board of Geographic Names made "Signal Hill" official in 1965.

"Signal Hill, Wasco County, The Dalles, Oregon ... Dome-shaped hill 1-1/2 miles in diameter rising to altitude of about 900 feet on the left side of the Columbia River 3 miles northeast of The Dalles." (GNIS database, November 27, 1964)

"Signal Hill, Oregon, Wasco County ... hill with an elevation of about 960 feet, just south of the Columbia River about 5 miles east-northeast of The Dalles. Oregon Boaard, The Dalles 1:62; proposed name for an unnamed feature; name is reported to be used on Army Engineer's plans for Dalles Dam; name is appropriate because of the electrical and electronic equipment on the hill; name approved by the Oregon Board, 6/20/64." (GNIS database, July 13, 1965)

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

  • McArthur, L.A., and McArthur, L.L., 2003, Oregon Geographic Names, Oregon Historical Society, Portland;
  • U.S. Geological Survey's Geographic Names Information System (GNIS) database, 2015;

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