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2020 Map of Black Coulee

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

USGS Topo · Published 2020

About this map

Black Coulee and its associated drainages define the character of this Rosebud County landscape, where water management is central to the local geography. The map reveals a series of critical catchments such as Hay Cr Reservoir, Corny Coulee Reservoir, and Black Coulee Reservoir designed to harness the seasonal flow of prairie creeks. These artificial water bodies, along with the Little Porcupine Cr, are the lifeblood of a region otherwise dominated by complex coulee systems and high ground features like the Schoolmarm Buttes.

The survey highlights the intricate network of prongs and coulees that feed into the larger water system, including North Prong Black Coulee, South Prong Black Coulee, and Wagon Box Coulee. This intricate drainage pattern suggests a landscape primarily shaped by cattle ranching and resource management, with Little Porcupine Creek Rd providing the primary transit route through the sprawling open country of the northern Rosebud territory.