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2020 Map of Harmon Butte

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

USGS Topo · Published 2020

About this map

Harmon Butte rises above an intricate network of drainages that define the landscape where Fallon Co meets Carter Co in eastern Montana. This area is characterized by a dense system of seasonal and perennial waterways, including the winding O'Fallon Cr and Lame Jones Cr, which cut through the high plains. The transport infrastructure is sparse, relying on a grid of rural routes such as Willard Rd W and Ismay Rd S to navigate the undulating terrain.

A significant hydrological divide is visible in the southern portion of the map, where Milk Cr, Spring Cr, and the S Fork Milk Cr converge. These water sources have historically dictated the placement of ranching operations and primitive roadways in this corner of the state. The mapping reveals a transition from the higher elevations near Harmon Butte to the lower basins fed by Lone Tree Cr, providing a clear record of the watershed patterns that sustain this rural prairie environment.