Ut-In Sélica is the Order of the Arrow lodge for the Mt. Diablo Silverado Council.
Order of the Arrow was founded in 1915, to honor Scouts and Scouters who represent the best of the Scouting program. OA was recognized as Scouting's National Honor Society in 1998. Ut-In Sélica serves Mt. Diablo Silverado Council.
The mission of the Order of the Arrow is to fulfill its purpose as an integral part of the Boy Scouts of America through positive youth leadership under the guidance of selected capable adults.