Description
Flows generally southeast 11.2 km (7 mi) to the San Andreas Rift where it is dammed to form lower Crystal Springs Reservoir, from the dam it flows generally northeast 8 km (5 mi) through San Mateo where it is partly intermittent and altered, to San Francisco Bay about 1.1 km (0.7 mi) west of the mouth of Seal Slough. (US-T121)