On April 18, 1879, the United States set aside the Columbia Reservation for Chief Moses and his tribe. The tribe agreed to cede their Columbia Basin territory, which was then opened for homesteading. The new reservation was bordered on the east by the Okanogan River (the western boundary of the Colville Indian Reservation), on the south by the Columbia River, on the west by the Chelan River, Lake Chelan and the crest of the Cascade Mountains, and on the north by the international boundary with Canada. This was some distance away from the tribe's original range (which was south of the Columbia), and the terrain was very different.