Senijextee Indians were located on both sides of the Columbia River from Kettle Falls to the Canadian boundary, the valley of Kettle River, Kootenay River from its mouth to the first falls, and the region of the Arrow Lakes, B. C. The Lake Indians on the American side were placed on Colville Reservation.
Senijextee Indians. A Salish tribe formerly residing on both sides of Columbia River from Kettle falls to the Canadian boundary; they also occupied the valley of Kettle River; Kootenay River form its mouth to the first falls, and the region of the Arrow Lakes, British Columbia. In 1909 those in the United States numbered 342 on the Colville Reservation, Washington.