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2024 Map of Eureka Basin

Name: 2024 Topographic Map of Eureka Basin
Creator: U.S. Geological Survey
Published: 2024
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2024

About this map

The high-elevation meadows and peaks of the Gravelly Range dominate this modern survey, which captures the complex hydrography of the Continental Divide's eastern slope. Located within the Beaverhead National Forest, the terrain is defined by the Eureka Basin and a network of critical headwaters. The map illustrates the divergence of flow between the Ruby River and the West Fork Madison River, documenting the vital water sources that sustain this landscape, including Lone Willow Spring and Twin Springs.

Primitive transportation routes like Eureka Basin Rd and Gravelly Range Rd traverse the slopes, providing access to remote drainage basins. The boundary between Madison and Beaverhead Counties cuts across the southern portion of the quadrangle, where the headwaters of Anderson Creek and Long Creek emerge. This map is an essential reference for understanding the modern hydrologic and topographic layout of Montana's high country.