Tags: Ethnic Group.
The Spirit Lake Tribe (In Santee Dakota: Mni Wakan Oyate formerly Devils Lake Sioux) is a Sisseton Wahpeton tribe. Its reservation is located in east-central North Dakota on the southern shores of Devils Lake. Established in 1867 in a treaty between Sisseton Wahpeton Bands and the United States government the reservation at 47°54′38″N 98°53′01″W consists of 1283.777 km² (495.669 sq mi) of land area primarily in Benson County and Eddy County.