San Lorenzo River

San Lorenzo River
Rio de San Lorenzo
The San Lorenzo River southeast of downtown Santa Cruz.
1954 Map of Waddell Creek, Scott Creek and San Lorenzo River
Location
CountryUnited States
StateCalifornia
CountySanta Cruz County
CitiesBoulder Creek, Brookdale, Ben Lomond, Felton, Santa Cruz
Physical characteristics
SourceSanta Cruz Mountains
  locationCastle Rock Ridge
  coordinates37°15′15″N 122°07′10″W / 37.25417°N 122.11944°W / 37.25417; -122.11944
  elevation2,670 ft (810 m)
MouthMonterey Bay
  location
Santa Cruz, California
  coordinates
36°57′51″N 122°00′45″W / 36.96417°N 122.01250°W / 36.96417; -122.01250
  elevation
0 ft (0 m)
Length29.3 mi (47.2 km)
Basin size138 sq mi (360 km2)
Discharge 
  locationSanta Cruz
  average122.4 cu ft/s (3.47 m3/s)
Basin features
Tributaries 
  leftCraig Springs Creek, Kings Creek, Two Bar Creek, Bear Creek, Spring Creek Gulch, Love Creek, Newell Creek, Zayante Creek, Eagle Creek, Powder Mill Creek, Branciforte Creek
  rightTin Can Creek, Spring Creek, Boulder Creek, Malosky Creek, Clear Creek, Alba Creek, Hubbard Gulch, Manson Creek, Fall Creek, Bull Creek, Shingle Mill Creek, Gold Gulch Creek

The San Lorenzo River (Spanish: Río de San Lorenzo) is a 29.3-mile-long (47.2 km) river in the U.S. state of California. The name San Lorenzo derives from the Spanish language for "Saint Lawrence" due to its reported sighting on that saint's feast day by Spanish explorers. Its headwaters originate in Castle Rock State Park in the Santa Cruz Mountains and flow south by southeast through the San Lorenzo Valley before passing through Santa Cruz and emptying into Monterey Bay and the Pacific Ocean.