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2020 Map of Marcum Mountain

Name: 2020 Topographic Map of Marcum Mountain
Creator: U.S. Geological Survey
Published: 2020
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2020

About this map

Blackfoot River hydrology and the high-altitude terrain of the Garnet Range define this portion of Powell County. The landscape is a mix of protected conservation lands and agricultural infrastructure, notably the Powell County Waterfowl Production Area and the Helena National Forest. Irrigation systems like the N Helmville Canal cut across the lower elevations, supporting the ranching traditions of Kleinschmidt Flat.

Evidence of the area's rural development is seen in the network of named local routes such as Arrastra Creek Rd and Nevada Ogden Rd, which provide access to interior peaks like Marcum Mtn and Trapper Mtn. The small settlement of McDonald sits along the river corridor, while numerous waterways including Wasson Cr and Nevada Creek drain the surrounding slopes toward the valley floor, creating a complex drainage pattern critical to both the waterfowl habitat and local ranching.