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2017 Map of O'Hanlon Coulee

Name: 2017 Topographic Map of O'Hanlon Coulee
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

The Missouri River carves a deep valley through this Chouteau County landscape, creating a dramatic corridor of river bars and steep coulees. Prominent riparian features such as Evans Bend, Shonkin Bar, and Baker Bar dominate the northern section, while the Teton River converges from the northwest near the striking Crocon du Nez landmark. The upland areas are defined by the high, flat Rowe Bench and the expansive Frenchmans Ridge to the south.

Rural infrastructure is mapped through a network of named tracks that follow the natural topography, including the historic Stagecoach Trl and O'Hanlon Coulee Rd. This region's character is shaped by its drainage patterns, with numerous erosion features like Early Coulee, Smith Coulee, and Boyle Coulee cutting toward the Missouri from the surrounding plains, illustrating the complex hydrology of the Montana prairie.