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1930 Map of Mt. Jefferson

Name: 1930 Topographic Map of Mt. Jefferson
Creator: U.S. Geological Survey
Published: 1948
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1948

About this map

Mt Jefferson dominates the high Cascades on this 1927 survey, serving as the convergence point for the boundaries of Marion, Jefferson, and Linn counties. The landscape is defined by its glacial and volcanic features, from the sharp peak of Lionshead to the sprawling Jefferson Park and the cinder cones of the south. This era shows the high-country wilderness before modern infrastructure, where travel was primarily via routes like the Oregon Skyline Trail.

To the east, the Warm Springs Indian Reservation spans a vast drainage basin feeding the Metolius River. The map meticulously details the complex hydrology of the region, including the headwaters of the Clackamas River and the Collawash River, alongside numerous alpine basins such as Marion Lake and Olallie Meadow. This record captures the intricate system of meadows and mountain passes that supported early forestry and recreation within the Mount Hood National Forest and Deschutes National Forest.