THE FALL RIVER COUNTY LAND BRIEF
Land in the
Semiarid Pierre Shale Plains setting.
Fall River County has 1,739.9 square miles of land in South Dakota. 3 mapped landscape regions meet across Fall River County: Semiarid Pierre Shale Plains, Black Hills Foothills, Black Hills Plateau.
Rolling semiarid plains are punctuated by buttes, badlands and river breaks. Much of the regional terrain developed on sandstone, siltstone and shale without the leveling influence of continental glaciers.
Regional context: Northwestern Great Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Fall River County intersects 3 mapped regional units. The largest mapped shares are:
- Semiarid Pierre Shale Plains83.6%
- Black Hills Foothills15%
- Black Hills Plateau1.4%
Middle Rockies in Fall River County
Forested mountain ranges rise above grassy or shrubby intermountain valleys. The Middle Rockies combine alpine high country, partly wooded foothills and valleys supplied by mountain streams.
Read the regional source ↗Finding your parcel within Fall River County
The atlas lists 12 cities, towns, townships, and Census communities associated with Fall River County, including Argentine, Provo, Angostura. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Fall River County by land and water
The Census records 9.28 square miles of water within Fall River County, or 0.5% of its total area. That share is close to Fall River County’s 0.5%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Fall River County has 138.2 times the land area of nearby Angostura CDP (12.6 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Custer County, Oglala Lakota County within South Dakota. A tract near one of these lines should be matched to the county identifier on its own records.