Activated: March 16, 1942; Deactivated:June 17, 1942. Seattle Filter Center.
October 22, 1963: "The flames, running through clumps of brush and scattered trees, as well as cheat grass, moved over Chelan Butte, seven miles south of Chelan. It burned under a timber fire lookout tower atop the butte, but the Forest Service lookout, Elmer Dorsett, remained at his post." (The Oregon Statesman)
1995: Moved to the Columbia Breaks Fire Interpretive Center.
National Geodetic Survey
DESCRIBED BY US GEOLOGICAL SURVEY 1940 (ANS) STATION IS A U.S. GEOLOGICAL SURVEY TRIANGULATION STATION AND IS LOCATED IN CHELAN COUNTY, ON THE HIGHEST PART OF CHELAN BUTTE. IT IS 'IN THE FORKS OF LAKE CHELAN AND THE COLUMBIA RIVER, 3 MILES SW OF THE TOWN OF CHELAN. NO UNDERGROUND MARK WAS SET.
THE STATION IS A BRASS PLUG, SET IN THE TOP OF A BOULDER ABOUT 3 BY 7 FEET IN SIZE, THE TOP OF WHICH PROJECTS ABOUT 1 FOOT. THE STATION IS CENTERED DIRECTLY BENEATH THE CHELAN BUTTE LOOKOUT.