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1970 Map of Three Sisters

Name: 1970 Topographic Map of Three Sisters
Creator: U.S. Geological Survey
Published: 1973
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1973

About this map

The Continental Divide serves as the central spine of this 1970 survey, defining the high-altitude boundary between Flathead Co and Lewis and Clark Co. This primitive mountain landscape is preserved within the Bob Marshall Wilderness, where the drainage patterns of the Spotted Bear River and Sun River Game Preserve are intricately mapped. Notable peaks including Hahn Peak, Lick Mountain, and Lookout Mountain dominate the terrain, while the namesake Three Sisters and Three Sisters Creek anchor the southern portion of the sheet.

Local geography is defined by an extensive network of drainage basins, from the North Fork Lick Creek to the South Fork Red Shale Creek. Throughout the area, a series of high-mountain waters like Hart Lake and Sock Lake are connected by a system of labeled Pack Trails, illustrating the historical reliance on animal transport for navigating this high-country portion of the Lewis and Clark National Forest.