Tehama Lodge #485 has been an active lodge from the very beginning. It hosted the 1952 Area 12-C Conference at Camp Lassen, even before its first charter was issued (December 30). Tehama was the name of ta Copenhan Indian Tribe: the name given to the extinct volcano that once existed where Mount Lassen has since risen. The Lodge totem was Mount Lassen, a currently existing, dormant volcano.
Since 1952, Tehama has hosted 2 major inter-Lodge activities. The 1970 Area 12-C Conference, at Bristow Hood Scout Reservation, and the fourth annual Section W3B Conclave, in 1976 at Camp Lassen.
Tehama Lodge is divided into three Chapters: Maidu, Wintun, and Yana (The three local Indian Tribes). The Lodge newsletter was named "Brave Talk." The Lodge was chartered by the Mount Lassen Area Council, which served Butte, Glenn, Shasta, Tehama, and Trinity Counties.