the Colville Confederated Tribes commemorated the 125th anniversary of the signing of the Executive Order that created the reservation. Communities Coulee Dam (part, population 915) Disautel Elmer City Inchelium Keller Nespelem Nespelem Community (Agency area) North Omak Okanogan (a small part, population 2) Omak (part, population 742) Twin Lakes Government The Confederated Tribes and the Colville Indian Reservation are governed by the Colville Business Council. From its administrative headquarters located at the Bureau of Indian Affairs (BIA) Agency at Nespelem, the Colville Business Council oversees a diverse, multi-million-dollar administration that employs from 800 to 1,200 individuals in permanent, part-time, and seasonal positions. Members of the Colville Business Council are elected to a renewable two-year term of office. Four council members are elected from each legislative district noted above, except for the lesser-populated Keller District, which elects two. Each year, half of the Business Council seats in each district are up for election. Elections are held mid-June, with votes cast in person at polling sites at a predesignated location (usually the local community center) or by absentee ballot. Legislative districts The tribe is governed by a Chairman and the Colville Business Council, the latter consisting of members elected from tribal legislative districts. These are as follows. Omak District: The largest district by population, this consists of the northwestern portion of the reservation: the Okanogan Valley and the eastern portion of the city of Omak. The Okanogan River is the western border of the reservation and delimits the reservation portion of Omak. Nespelem District: This is the west-central portion of the reservation, including the Nespelem Valley and part of the city of Coulee Dam. The Reservation Headquarters is located in the district on the Bureau of Indian Affairs Agency campus near the town of Nespelem. In Coulee Dam, the Columbia River also serves as a reservation border within the town limits. Keller District: This is the east-central region of the reservation, namely the San Poil Valley to the mouth of the Columbia River, along a tributary, the San Poil River, and the edge of the man-made Lake Roosevelt. Inchelium District: This is the north-east part of the reservation. Economy Colville Tribal Federal Corporation (CTFC) has responsibility for managing economic development. It manages 13 enterprises that "include gaming, recreation and tourism, retail, construction and wood products." CTFC is an economic leader in northeastern Washington. "The corporation employs over 800 people" and generates more