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2017 Map of Three Brothers

Name: 2017 Topographic Map of Three Brothers
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 serves as the backbone of this high-altitude landscape, where the waters of Helena National Forest and Deerlodge National Forest part ways. This 2017 survey centers on the transition between Powell Co, Lewis And Clark Co, and Jefferson Co, a region defined by its complex drainage systems and storied mining geography. In the northeast, the settlement of Rimini sits near the headwaters of Tenmile Cr, a vital water source evidenced by structures like Travis Reservoir and Scott Reservoir.

Evidence of the area's prospecting history is found in the many named gulches and peaks, including Booth Gulch, Flume Gulch, and Luttrell Peak. The southern portion of the map is dominated by the namesake Three Brothers and Old Baldy Mtn, while the unusually named Sure Thing Swamps occupies a high basin. The intricate network of forest roads, such as Telegraph RD and Basin Creek RD, follows the natural contours established by the early timber and mineral interests of the Montana mountains.