Cheyenne River Indian Reservation (South Dakota)

The Cheyenne River Indian Reservation is located in Dewey and Ziebach Counties, in north central South Dakota.


 * Established -- 29 April 1868
 * Agency (BIA) -- Cheyenne River Agency in Eagle Butte, South Dakota
 * Principal tribes -- Blackfeet (Sihasapa), Miniconjou, Sans Arcs, and Two Kettle (Oohenonpa) Sioux
 * Population -- 2,023 (2000 census)

History
The Cheyenne River Reservation was established by Treaty of Apr. 29, 1868 (xv, 630), modified by executive orders of Jan. 11, Mar. 16, and May 20, 1875, and Nov. 28, 1876 and by additional agreements and executive orders.

In 1908, the reservation contained 2,547,209 acres.

Records
Many of the records of individual Indians living on the Cheyenne River Reservation were kept by the Cheyenne River Agency of the Bureau of Indian Affairs. Others are kept by the Tribal Office.