The major tributaries of the Slough are Tecolotito Creek, Carneros Creek, and Atascadero Creek. Tecolotito Creek's highest flows are during winter storms; during the summer flows are intermittent. Carneros Creek's major flows are of the flash flood type, with intermittent flows in the summer months. Atascadero Creek is a stream that generally has perennial freshwater flow that is augmented by seepage and landscape watering. Highest flows are during winter storms. Other flow sources are runoff from the north-facing bluffs of UC Santa Barbara campus and More Mesa.
