2017 Map of Ideal NW

About this map

The White River carves a winding path through this portion of the South Dakota plains, defining the boundary between Lyman and Tripp counties. This 2017 survey reveals a landscape largely shaped by its hydrology and section-line roads, where the river's meandering course creates distinctive topographical features such as Gunny Sack Bottom. The drainage network is further defined by several tributaries, including Mill Iron Cr in the northwest and Dog Ear Cr in the southwest, illustrating the natural erosion patterns of the northern Great Plains. Human presence is marked by a grid of rural routes such as 252nd St and 259th St, while the inclusion of the historic Wagon Rd in the northeast quadrant provides a connection to earlier overland transportation routes that once traversed this river valley.