2015 Map of Oldham SW

About this map

Coteau des Prairies defines the rolling, water-dotted character of this Miner County landscape. The terrain is defined by a dense network of glacial wetlands and depressions, ranging from the prominent Silver Lake and Otter Lake to smaller features like The Horseshoe. The drainage pattern is led by the East Fork Vermillion River in the northeast and the Little Vermillion River cutting through the southern sections. This 2015 survey illustrates a rural South Dakota township structured by a rigid section-line road grid, including 437th Ave and 230th St. While primarily agricultural, the abundance of named water bodies such as McCart Slough and Wombacker Slough suggests a landscape where local hydrology dictated the placement of farms and transit routes over generations.