
Alsea sits at the confluence of the North Fork Alsea River and the main stem of the Alsea River, serving as a central hub for this corner of Benton County. The landscape is defined by the steep timbered rises of the Coast Range, including landmarks like Old Blue Mountain, Doe Mountain, and Maddsens Knob. This 2011 survey documents a community tied deeply to its waterways and forest access, with the Alsea River Hatchery located upstream and the Alsea Post Office and Alsea Cemetery marking the town's social and historical core.
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1921 · Corvallis
USGS Topo · 1:62,500
1922 · Monroe
USGS Topo · 1:62,500
1939 · Marys Peak
USGS Topo · 1:62,500
1939 · Monroe
USGS Topo · 1:62,500
1942 · Marys Peak
USGS Topo · 1:62,500
1942 · Alsea
USGS Topo · 1:62,500
1942 · Monroe
USGS Topo · 1:62,500
1942 · Corvallis
USGS Topo · 1:62,500
1953 · Salem
USGS Topo · 1:250,000
1954 · Salem
USGS Topo · 1:250,000