In addition, many small parcels of off-reservation trust land are located in Stanley, Haakon, and Meade counties.

However, in the early 20th century, land south of the Grand River was ceded to the Standing Rock Reservation.

A small number of White River Utes were resettled on the reservation in 1906 and 1907, being allocated four townships totaling 92,160 acres.

In 1890, the United States became very concerned about Chief Sitting Bull who they feared was going to lead an exodus off the Reservation.

A force of 39 Indian policemen and four volunteers were sent to chief Sitting Bull's residence near the Grand River on December 16, 1890, to arrest him.

Initially, Sitting Bull cooperated but became angry once led out of his residence and noticed around 50 of his soldiers were there to support him.

During some point while outside of chief Sitting Bull's residence, a battle commenced in which the legendary leader was killed.

[citation needed] Beginning in 1948, the US government dammed the Missouri River for electrical power and flood control.

The Sacred Calf Pipe bundle in red represents Wakan Tanka – The Great Mystery.

The members include representatives from four of the traditional seven bands of the Lakota, also known as Teton Sioux: the Minnecoujou, Two Kettle (Oohenunpa), Sans Arc (Itazipco) and Blackfoot (Sihásapa).

[1] Many of the 13 small communities on the Cheyenne River Reservation do not have water systems, making it difficult for people to live in sanitary conditions.

In recent years, water systems have been constructed that tap the Missouri Main Stem reservoirs, such as Lake Oahe, which forms the eastern edge of the Reservation.

Indian Country Today reports than one in five girls on the Cheyenne River Reservation has contemplated suicide and more than one in ten has attempted it.

As of February 26, 2010, tribal representatives turned attention to raising awareness about the reservation's damaged water infrastructure.

[9][10][11] The communities of Iron Lightning, Thunder Butte, Bullhead, Little Eagle, and Wakpala date back to the original 1889 reservation boundaries.

Nearly all communities on the Cheyenne River Reservation, including in the land area settled by white homesteaders after 1908, have a majority population of Native Americans.