Laguna Creek (San Mateo County)
| Laguna Creek | |
| Lake Creek Cañada Raimundo Creek |
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| River | |
 Laguna Creek has perennial pools as shown here looking upstream from South Bridge at Filoli, mid-August 2012.
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| Country |  United States |
|---|---|
| State | California |
| Region | San Francisco Peninsula |
| County | San Mateo County |
| Tributaries | |
| - left | South Fork Laguna Creek, West Fork Laguna Creek, Fault Creek, Spring Creek, Adobe Gulch |
| - right | Hetch Hetchy Aqueduct |
| Landmark | Crystal Springs Reservoir |
| Source | |
| - location | Edgewood County Park |
| - elevation | 630 ft (192 m) |
| - coordinates | 37°27′48″N 122°17′10″W / 37.46333°N 122.28611°W |
| Mouth | Confluence with Upper Crystal Springs Reservoir (but historically with San Mateo Creek) |
| - elevation | 285 ft (87 m) |
| - coordinates | 37°28′57″N 122°19′19″W / 37.48250°N 122.32194°WCoordinates: 37°28′57″N 122°19′19″W / 37.48250°N 122.32194°W |
Laguna Creek (Spanish for: Lake Creek) is a perennial stream that flows northwesterly for 2.6-mile (4.2 km) along the San Andreas Fault from Woodside in San Mateo County, California and, after crossing the Phleger Estate and Filoli, enters Upper Crystal Springs Reservoir, where it is a historic tributary to San Mateo Creek. San Mateo Creek then carries its waters over Crystal Springs Dam northeast to San Francisco Bay.
After discovering San Francisco Bay from Sweeney Ridge on November 4, 1769, the Portolà expedition descended on what Portolà called the Cañada de San Francisco, now known as San Andreas Creek, to its confluence with San Mateo Creek. Just downstream from here was Laguna Creek's confluence with San Mateo Creek. Crossing San Mateo Creek just above its canyon, Portola's party proceeded south along Laguna Creek and camped on a lake which Portolà called Laguna Grande, now covered by Upper Crystal Springs Reservoir. The campsite is marked by California Historical Marker No. 94, "Portola Expedition Camp", located at Crystal Springs Dam, on Skyline Boulevard, 0.1 mi south of Crystal Springs Road. Then Portola continued south and descended from the foothills along San Francisquito Creek to established his base camp at El Palo Alto, in modern day Palo Alto, California. The Laguna Creek and Laguna Grande place names are shown on the 1856 plat maps/diseños of Rancho de las Pulgas and Rancho Cañada de Raymundo and Easton's 1868 map of San Mateo County.
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Wikipedia