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1973 Map of Heggs Lake

Name: 1973 Topographic Map of Heggs Lake
Creator: U.S. Geological Survey
Published: 1976
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1976

About this map

The prairie pothole landscape of Clark County is defined by its abundant wetlands and critical wildlife habitat, as seen in this 1970s survey. Large bodies of water like Heggs Lake and Carson Lake anchor a network of smaller marshes and depressions, including Pepper Slough and Lake Todd. These features were highly protected at the time of this mapping, with significant acreage dedicated to the National Waterfowl Production Area, Swan Lake State Public Shooting Area, and the Paehn State Public Shooting Area.

Settlement is concentrated around the town of Bradley, situated at a rail junction where the Chicago and North Western crossed the Chicago Milwaukee St Paul and Pacific line. The surrounding townships of Cottonwood, Blaine, Thorp, and Maydell show a regular grid of section lines and farmsteads typical of the eastern South Dakota plains, while scattered Gravel Pits indicate local resource extraction.