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1974 Map of Thompson Lake

Name: 1974 Topographic Map of Thompson Lake
Creator: U.S. Geological Survey
Published: 1977
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1977

About this map

The Lostwood National Wildlife Refuge dominates this section of Burke County, where a dense concentration of prairie potholes and sloughs creates a complex, aquatic landscape. This 1974 survey documents a terrain defined by glacial activity, featuring numerous named water bodies like Iverson Lake, Ward Lake, and the expansive Thompson Lake. The presence of the Lostwood Wilderness area highlights the preservation of this unique ecosystem, characterized by natural depressions such as Swensens Slough and Melbys Slough.

Human activity is sparse but notable through landmarks like the Little Butte Cem and several technical installations including a Radio Tower and Lookout Tower. The map also identifies local boundaries such as Clayton, Ward, and Dimond. The drainage patterns are clearly visible through features like Iverson Slough and Teal Slough, while a Gravel Pit near the northern boundary provides evidence of local resource extraction in this prairie environment.