The Viejas Reservation ( 32★1′01″N 116☄1′33″W / 32.85028°N 116.69250°W / 32.85028 -116.69250), also known as the Baron Long Reservation, is a federal Indian reservation located in San Diego County, California, in the Cuyamaca Mountains near Alpine. It is undeveloped but serves as an ecological preserve. The two tribes jointly control this reservation. The El Capitan Reservoir, forcibly purchased from the two tribes to provide water for San Diego, submerged what habitable land existed on the reservation. In 1875, the Viejas Band shared the Capitan Grande Reservation along with the Barona Group of Capitan Grande Band of Mission Indians, which consisted of lands in and around the present day El Capitan Reservoir. Reservations Location of Viejas Reservation The Viejas (Baron Long) Group of Capitan Grande Band of Mission Indians of the Viejas Reservation, also called the Viejas Band of Kumeyaay Indians, is a federally recognized tribe of Kumeyaay Indians.