Unified Interior Regions

South Dakota

Surface water and groundwater provide important water supplies in South Dakota. Major rivers include the Big Sioux, James, Cheyenne, and Missouri Rivers. Key aquifers include the Dakota, Madison, Minnelusa, and Big Sioux aquifers. The Dakota Water Science Center has many studies that focus on these resources as well various other national and international studies. 

Link to Science Center

States L2 Landing Page Tabs

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Image: Streamgage 06404998, Grace Coolidge Creek, SD
May 25, 2001

Streamgage 06404998, Grace Coolidge Creek, SD

Streamgage on Grace Coolidge Creek near Game Lodge near Custer, SD, 06404998.

Image: Limestone Plateau West of Custer, SD
May 25, 2001

Limestone Plateau West of Custer, SD

The Limestone Plateau along the South Dakota-Wyoming border west of Custer, SD. Numerous headwater springs occur along the eastern edge of the Limestone Plateau. Large outcrops of the Madison Limestone and Minnelusa Formation form the plateau.

Image: Precambrian Rocks in the Black Hills, SD
May 24, 2001

Precambrian Rocks in the Black Hills, SD

Precambrian rocks in the Black Hills of South Dakota. Precambrian rocks form the central crystalline core of the Black Hills. Fracturing and weathering in Precambrian rocks affect the availability of water in this unit.

Image: Bear Butte Creek, South Dakota
May 24, 2001

Bear Butte Creek, South Dakota

Bear Butte Creek in northern Black Hills near Deadwood, SD.

Image: Beaver Creek at Mallo Camp near Four Corners, WY
May 24, 2001

Beaver Creek at Mallo Camp near Four Corners, WY

Beaver Creek at Mallo Camp near Four Corners, WY.

Image: Sand Creek at Ranch A near Beulah, WY
May 24, 2001

Sand Creek at Ranch A near Beulah, WY

Sand Creek at Ranch A near Beulah, Wyoming.

Image: Spearfish Creek, SD
May 24, 2001

Spearfish Creek, SD

Spearfish Creek in the northern Black Hills of South Dakota.

Image: Spring above Rhoads Fork, SD
May 24, 2001

Spring above Rhoads Fork, SD

Headwater springflow is common in the Limestone Pateau area in the Black Hills of western South Dakota. Most headwater springs in the Black Hills, like this one contributing to Rhoads Fork, generally occur near the base of the Madison Limestone along the eastern edge of the Limestone Plateau area.

Image: Mt. Coolidge Area, Custer State Park, SD, 2001
May 24, 2001

Mt. Coolidge Area, Custer State Park, SD, 2001

Photograph taken in 2001 of Mt. Coolidge area in Black Hills of western South Dakota. The area was burned by the Galena Fire in 1988, which burned approximately 17,000 acres in Custer State Park.

Image: Bear Butte Creek, South Dakota
May 24, 2001

Bear Butte Creek, South Dakota

Bear Butte Creek in northern Black Hills near Deadwood, SD.

Image: Deadwood Formation in Deadwood, SD
May 24, 2001

Deadwood Formation in Deadwood, SD

Towering cliff of the Deadwood Formation in Deadwood, SD. The Deadwood Formation consists mostly of sandstone and shale.

Image: Grace Coolidge Creek, SD
May 24, 2001

Grace Coolidge Creek, SD

Grace Collidge Creek above loss zone in southern Black Hills of South Dakota.