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2012 Map of Sourdough Flats

Name: 2012 Topographic Map of Sourdough Flats
Creator: U.S. Geological Survey
Published: 2012
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2012

About this map

Sourdough Flats and Windy Flats characterize this high-plains landscape in Butte County, where the meandering course of the Belle Fourche River creates a complex drainage network. The river's path is fed by numerous tributaries, including Middle Cr, Crow Cr, and Grummit Canyon Cr. The geography reflects a sparsely populated ranching environment, anchored by local sites such as the Fuller Ranch and the distinctive geological depression of Big Canyon in the south.

Local transport is defined by a grid of rural routes like Rehorst Rd and Mona Rd that navigate the high plateaus and creek bottoms. The interplay between the flat tablelands and the deeply carved watercourses like Hay Cr demonstrates the typical erosional patterns of the western South Dakota prairie. This map offers a clear view of the rural infrastructure and natural hydrology before further modern development altered these traditional grazing lands.