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1968 Map of Arrastra Mountain

Name: 1968 Topographic Map of Arrastra Mountain
Creator: U.S. Geological Survey
Published: 1971
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1971

About this map

Arrastra Mountain dominates the central landscape of this 1968 survey, where the boundaries of the Helena National Forest and Lolo National Forest converge. This high-country terrain is defined by a dense network of drainages and seasonal watercourses, including the headwaters of Arrastra Creek, Mineral Creek, and Rock Creek. Evidence of early resource extraction and land use is visible in features like the Prospect and a Gravel Pit, alongside several primitive routes designated as Pack Trail and Jeep Trail.

Remote basins such as Porcupine Basin and high parks like Alpine Park suggest a landscape utilized for summer grazing and wilderness access. The presence of Reservoir Lake at the foot of the mountain indicates water management in this high-altitude environment. Geographers and local historians can trace the intricate topography of the Continental Divide area, marked by the dividing line between Powell Co and Lewis And Clark Co that follows the high ridges.