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2020 Map of Carter Mountain

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

USGS Topo · Published 2020

About this map

Highwood Mountains topography dominates this section of Chouteau County, where the high peaks of Carter Mtn rise above a landscape defined by deep drainage patterns and volcanic geology. The area is characterized by a series of coulees, including Todd Coulee, Broker Coulee, and Elmer Coulee, which channel seasonal runoff into major local waterways like Shonkin Cr and Keaster Cr. These landforms reflect the complex erosion of the mountain front, creating isolated pockets of arable land and natural crossings such as the Shonkin Creek Bridge.

Local history is anchored by the Upper Shonkin Cem, a vital genealogical landmark located near the base of the mountains. Much of the southern portion of the map is protected within the Lewis & Clark National Forest, preserving the original character of the Montana range. Rural access routes like W Shonkin Rd and the uniquely named Outhouse Dot Trl trace the contours of the foothills, connecting the high country to the broader agricultural plains.