2017 Map of Clear Lake NE

About this map

Coteau des Prairies defines the high-altitude topography of this eastern South Dakota landscape, where the plateau surface is etched by glacial drainages. This 2017 survey reveals the distinct drainage patterns of Crow Timber Cr and Mud Cr as they cut through the upland prairie toward the border of Grant and Deuel counties. The map reflects the enduring grid of section lines and gravel roads, such as 165th St and 172nd St, which have partitioned the agricultural land since the initial township surveys. Permanent water bodies like Lake Alice and Lone Tree Lake appear as localized depressions in the glacial till, serving as important landmarks for local landowners and researchers tracing the hydrographic history of Altamont Township.