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1986 Map of Ingals Dam

Name: 1986 Topographic Map of Ingals Dam
Creator: U.S. Geological Survey
Published: 1986
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1986

About this map

McDonald Creek and Bull Springs Creek define the drainage of this central Montana landscape during the mid-1980s. The map captures a transition in water management and land use, featuring the namesake Ingals Dam alongside an Abandoned Ditch and a Gaging Station. These features illustrate the vital role of irrigation and water control in the arid plains of Petroleum County.

Evidence of rural activity is scattered across the terrain, from a isolated Corral and Tanks to a small Cem and a Gravel Pit. The rugged topography is etched with numerous coulees, including Jackson Coulee and Risey Coulee, which channel seasonal runoff toward larger watercourses. This survey provides a clear look at the sparsely populated ranching country as it appeared before modern developments, preserving the locations of family-held land markers and remote infrastructure.