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2017 Map of Thunderbolt Creek

Name: 2017 Topographic Map of Thunderbolt Creek
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

The Continental Divide defines the high-altitude boundary of this Montana landscape, where the Helena National Forest and Deerlodge National Forest converge. This 2017 survey reveals a complex drainage system flowing away from the crest, including the headwaters of Thunderbolt Creek and several named mountain lakes like Cottonwood Lake and Cliff Lake. The terrain is marked by prominent summits such as Thunderbolt Mountain and Electric Peak, situated along the border of Powell and Jefferson counties.

A network of mountain access routes including Red Rock Road and Boulder River Road navigate the valleys, connecting remote high-country features. Local history is etched into the landscape through numerous named geographic features such as Berkin Flat, Boyle Gulch, and Alta Gulch. The southern portion of the map is anchored by the Boulder River, which serves as a primary drainage for the surrounding gulches and peaks of this protected forest interior.