1985 Map of De Smet

Infrastructure here follows the rigid section lines of the plains, anchored by the Chicago and North Western rail line that connects grain-handling hubs like Lake Preston, Arlington, and Iroquois. The map captures the hydrological complexity of the area, from the headwaters of the West Fork Vermillion River to the numerous sloughs and seasonal lakes like Lake Whitewood and Dry Lake, which dictate the placement of roads and small settlements like Oldham and Ramona.