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2021 Map of Hickman Lake

Name: 2021 Topographic Map of Hickman Lake
Creator: U.S. Geological Survey
Published: 2021
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2021

About this map

The Coteau des Prairies plateau dominates this section of Marshall County, defining a landscape of rolling glacial uplands and numerous small prairie potholes. This 2021 topographic record reveals a strictly rectilinear section-line road network, where local routes like 113th St and 424th Ave form a perfect grid across the undulating terrain. The drainage patterns and small depressions shown between 118th St and 121st St are characteristic of this unique geographic feature, which rises distinctly above the surrounding plains.

While largely rural and focused on agriculture, the map identifies critical local infrastructure including Co Hwy 12, Co Hwy 20, and Co Hwy 14. These corridors provide the primary east-west connectivity through the township lines of t126n r58w and t125n r57w. For the researcher, the map preserves the exact placement of section boundaries and local access roads that have defined land ownership in this part of South Dakota for generations.