Cajon Creek
About midway through Cajon Pass, a small creek issues from a marshy, tree-lined headwater area and runs along the canyon floor—this is Cajon Creek. In wet periods it can carry a steady flow, but downstream the water quickly breaks into riffles, pools, and thin sheets that soak into cobbles and sand, disappearing into the alluvium. Historically, that surface water was a practical “first drink” after descending the Mojave rim: enough to refresh travelers and stock before the route opened out toward southern California.Cajon Creek is part of the broader mountain-front drainage that gathers runoff from the San Gabriel and San Bernardino Mountains and funnels it through the pass. Like most channels here, it can turn dangerous fast. Storm bursts and warm rains on snow can send sudden floods down the wash, even when nearby ground looks dry—so it is both a resource and a hazard in the same breath.
