The Big Sioux River carves a winding path along the state boundary between Iowa and South Dakota, serving as the central geographic feature of this 2015 survey. The town of Chatsworth is positioned near the eastern bank, while the small settlement of Big Springs lies to the west, surrounded by a complex network of section-line roads and rolling drainage basins. This area is characterized by numerous small waterways, including Sixmile Cr, Indian Cr, and the several branches of Union Creek, which define the local topography.
47 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
This is the sole edition of this map. No revisions or reprints were ever made.
1897 · Canton
USGS Topo · 1:125,000
1898 · Elk Point
USGS Topo · 1:125,000
1900 · Canton
USGS Topo · 1:125,000
1901 · Elk Point
USGS Topo · 1:125,000
1907 · Elk Point
USGS Topo · 1:125,000
1955 · Sioux City
USGS Topo · 1:250,000
1955 · Sioux Falls
USGS Topo · 1:250,000
1958 · Sioux City
USGS Topo · 1:250,000
1958 · Sioux Falls
USGS Topo · 1:250,000
1959 · Sioux City
USGS Topo · 1:250,000