2017 Map of Jefferson

About this map

Jefferson and North Sioux City anchor this tri-state border region where South Dakota, Iowa, and Nebraska meet along the complex bends of the Missouri River. The landscape is defined by its riparian history, with oxbow remnants like McCook Lake, Mud Lake, and Lake Goodenough marking the ancient migrations of the river channel. This 2017 survey captures the interface between modern transportation corridors and the agricultural tradition of Union County. Near the town of Jefferson, local history is preserved at Saint Peter's Cem, while further west, the Civil Bend Cem sits near the county road network. The Big Sioux River serves as a prominent natural boundary to the east, weaving through the terrain where Plymouth and Union counties meet at the South Dakota and Iowa state line.