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2020 Map of Seventynine Coulee

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

USGS Topo · Published 2020

About this map

Seventynine Coulee and its intricate network of drainages define this stretch of Garfield County, Montana. The landscape is characterized by a series of north-to-south trending coulees, including Sherman Coulee, Bratten Coulee, and Barker Coulee, which cut through the high plains. High ground is marked by features like Blue Ridge in the northeast and Finley Butte further south, providing significant relief in an area primarily shaped by water erosion.

Hydrological features such as Finley Spring and Herron Spring indicate critical water sources in this semi-arid region, often serving as historic hubs for livestock and wildlife. To the southeast, the terrain descends toward Lodgepole Cr, which is fed by the North Kirby Coulee and South Kirby Coulee. This 2020 map documents the modern topographical state of a classic Big Sky ranching landscape, where the naming of coulees and springs often reflects the early homesteaders and families who settled these sections.