Elk Point serves as the focal point of this Union County landscape, situated near the confluence where the Big Sioux River joins the Missouri River. The area's geography is defined by the shifting alluvial plains of these major waterways, with Brule Creek and the meandering path of the Government Slough highlighting the complex drainage patterns of the Missouri bottomlands. The town's grid is anchored by Saint Joseph Cemetery and the local transit hub at MJ Aviation Airport II, illustrating a modern rural settlement pattern that relies on a dense network of sectional roads like 475th Ave and 323rd St. Significant infrastructure, including the diagonal path of Burbank Rd and S Dakota Hwy 11, shows how regional transportation adapted to the natural curves of the riverbanks and sloughs.
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1898 · Elk Point
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
1958 · Sioux City
USGS Topo · 1:250,000
1959 · Sioux City
USGS Topo · 1:250,000
1963 · Elk Point
USGS Topo · 1:24,000
1963 · Elk Point NE
USGS Topo · 1:24,000
1963 · Jefferson
USGS Topo · 1:24,000
1964 · Burbank
USGS Topo · 1:24,000