San Timoteo Canyon is a river valley canyon northeast of The Redlands, in the far northwestern foothills of the San Jacinto Mountains in the Inland Empire region of Southern California.GeographyThe canyon runs from its southern inflow mouth in Beaumont in Riverside County, in a northwest alignment, to its northern outflow mouth west of Redlands and east of Loma Linda in San Bernardino County.San Timoteo Creek formed the canyon, and flows northwest through it to its confluence with the Santa Ana River, being a tributary of it. The creek drains the Banning Valley west of the San Gorgonio Pass water divide, and the watersheds of the San Bernardino and San Jacinto Mountains that feed into it.HistoryThe canyon was part of the winter homeland of the Serrano people for thousands of years. There were hot springs in the area.The San Bernardino de Sena Estancia was established in 1819 as a ranch outpost Mission San Gabriel Arcángel, for the grazing of cattle by the Mission Indians. The original buildings grew to include a chapel, tile kiln, lime kiln, and a grist mill.
