Lagunitas Creek
| Lagunitas Creek Arroyo de San Geronimo, Paper Mill Creek | |
|---|---|
Pair of endangered coho salmon in Lagunitas Creek | |
Lagunitas Creek watershed (Interactive map) | |
| Etymology | Spanish |
| Native name | Tokelalume (Coast Miwok) |
| Location | |
| Country | United States |
| State | California |
| Region | Marin County |
| Physical characteristics | |
| Source | Mount Tamalpais |
| • coordinates | 37°56′51″N 122°35′50″W / 37.94750°N 122.59722°W |
| Mouth | Tomales Bay |
• coordinates | 38°4′48″N 122°49′37″W / 38.08000°N 122.82694°W |
• elevation | 0 ft (0 m) |
| Length | 20 mi (32 km) |
| Basin size | 103 sq mi (270 km2) |
| Basin features | |
| Tributaries | |
| • left | Olema Creek |
| • right | Devils Gulch, San Geronimo Creek, Nicasio Creek |
Lagunitas Creek is a 24-mile-long (39 km) 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).
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.