Lagunitas Creek

Lagunitas Creek is a 24 miles (39 km)-long northward-flowing stream in Marin County, California. It is critically important to the largest spawning runs of endangered coho salmon (Oncorhynchus kisutch) in the Central California Coast Coho salmon Evolutionary Significant Unit (CCC ESU).

Lagunitas Creek
Arroyo de San Geronimo, Paper Mill Creek
Pair of endangered coho salmon in Lagunitas Creek.
Lagunitas Creek watershed (Interactive map)
EtymologySpanish
Native nameTokelalume (Coast Miwok)
Location
CountryUnited States
StateCalifornia
RegionMarin County
Physical characteristics
SourceMount Tamalpais
  coordinates37°56′51″N 122°35′50″W
MouthTomales Bay
  coordinates
38°4′48″N 122°49′37″W
  elevation
0 ft (0 m)
Length20 mi (32 km)
Basin size103 sq mi (270 km2)
Basin features
Tributaries 
  leftOlema Creek
  rightDevils Gulch, San Geronimo Creek, Nicasio Creek

The stream's headwaters begin on the northern slopes of Mount Tamalpais in the Coast Range and terminate in southeast Tomales Bay, 1.5 miles (2.4 km) northwest of Point Reyes Station, California. Lagunitas Creek feeds several reservoirs on Mt. Tamalpais that supply a major portion of the county's drinking water.

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