Loading map...

2015 Map of Sourdough Flats

Name: 2015 Topographic Map of Sourdough Flats
Creator: U.S. Geological Survey
Published: 2015
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2015

About this map

Belle Fourche anchors the southeast corner of this Butte County landscape, where the Belle Fourche River meets a network of drainage systems including Hay Cr and Middle Cr. The terrain is defined by high plateau features like Sourdough Flats and Windy Flats, while the erosive action of seasonal water has carved out the significant Big Canyon to the south.

Rural infrastructure is well-defined by long-standing ranch roads and crossings, such as Dobesh Ranch Rd and Crow Creek Xing. These routes trace the high ground and creek bottoms, providing a clear view of how the land has been partitioned and utilized for grazing and transit in this part of South Dakota. The map also captures the path of Benonite Rd, reflecting the local industrial presence of bentonite mining and transport through the western flats.