The Fort Peck Reservation is home to two separate Indian nations, each composed of numerous bands and divisions.  The Souix divisions of Sisseton/Wahpeton, the Yantonais, and the Teton Hunkpapa are all represented. The Assiniboine bands of Canoe Paddler and Red Bottom are represented.  The reservation is located in the extreme northeast corner of Montana, on the north side of the Missouri River near Poplar, Montana.  The reservation is 110 miles long and 40 miles wide.