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2017 Map of Brennan Flat

Name: 2017 Topographic Map of Brennan Flat
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

The Cheyenne River winds through this Pennington County landscape, cutting a deep path through the high plateaus of western South Dakota. The topography is defined by prominent upland features including Brennan Flat in the north and a series of distinct tables to the south, such as Quinn Table, Seventyone Table, and Kube Table. These elevated landforms represent the characteristic erosion patterns of the region, where drainage systems like Bear Cr and Beaver Cr have carved out significant draws.

Rural infrastructure is primarily composed of section-line roads and specialized routes like Owanka Rd and Higgins Rd, facilitating access across the varied elevations. The map reveals a landscape largely shaped by its natural hydrology and geomorphology, with named features like Holcomb Flat and Anderson Draw indicating the longstanding local identification of specific grazing or transit areas within the river valley and its surrounding breaks.