
Olallie Butte dominates the skyline in this high-elevation landscape along the border of Marion and Jefferson counties. The area serves as a primary hydrologic hub, where the headwaters of the Clackamas River originate among a dense cluster of alpine basins. The map reveals an intricate network of water bodies, including Olallie Lake, Monon Lake, and the Gifford Lakes, many of which are linked by the Pacific Crest National Scenic Trail. This wilderness corridor, shared between the Mount Hood National Forest and Willamette National Forest, is defined by its volcanic geology. Notable peaks and landforms such as Twin Peaks, Potato Butte, and Rock Cone provide clear landmarks for researchers tracing the geography of the Oregon Cascades. The survey also captures the transition from open spaces like Olallie Meadow to the steep, timbered drainages of Squirrel Creek.
102 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1927 · Mt. Jefferson
USGS Topo · 1:125,000
1930 · Mt. Jefferson
USGS Topo · 1:125,000
1955 · Bend
USGS Topo · 1:250,000
1957 · Bend
USGS Topo · 1:250,000
1958 · Bend
USGS Topo · 1:250,000
1961 · Whitewater River
USGS Topo · 1:62,500
1961 · Fort Butte
USGS Topo · 1:62,500
1961 · Mt. Jefferson
USGS Topo · 1:62,500
1961 · Breitenbush Hot Springs
USGS Topo · 1:62,500
1983 · Madras
USGS Topo · 1:100,000