2015 Map of Onida SW

About this map

Warnes Slough sits in the northwestern corner of this prairie landscape, a natural wetland feature amid a meticulously surveyed grid of township and section lines. The map captures the boundary between Sully Co and Hughes Co, following the east-west line of 196th St. This area of central South Dakota is defined by a rigorous network of section-line roads, such as 297th Ave and 191st St, which partition the terrain for agriculture. The absence of concentrated town centers highlights the rural character of the region, where the primary landmarks are the natural depressions and the geometric regularity of the road system established under the Public Land Survey System.