2015 Map of Artichoke Butte NW

About this map

The Missouri River corridor serves as the primary geographic focus for this section of South Dakota, where the expansive waters of Lake Oahe dominate the river valley. This 2015 survey illustrates the complex, indented shoreline created by the reservoir's inundation of former prairie drainages. These smaller western tributaries, including Pascal Cr, Parker Cr, and Bull Cr, carve deep finger-like inlets into the high ground of Dewey County. On the eastern shore, the map traces the intersection of three county jurisdictions where Potter County and Sully County meet along the river's edge. The terrain is characterized by the stark contrast between the wide, flooded river basin and the high, dissected plateaus that surround it, with Alberts Cr further defining the southern breaks of the Dewey County side.