San Gregorio Creek
| San Gregorio Creek | |
| Arroyo de San Gregorio, Arroyo Rodrigues | |
| stream | |
 San Gregorio State Beach
|
|
| Country | United States |
|---|---|
| State | California |
| Region | Santa Mateo County |
| Tributaries | |
| - left | Alpine Creek |
| - right | La Honda Creek, Harrington Creek, Bogess Creek, El Corte de Madera Creek, Clear Creek, Coyote Creek |
| Source | Confluence of La Honda Creek and Alpine Creek in the Santa Cruz Mountains |
| Source confluence | |
| - location | La Honda, California, San Mateo County, United States of America |
| - elevation | 320 ft (98 m) |
| - coordinates | 37°19′45″N 122°16′58″W / 37.32917°N 122.28278°W |
| Mouth | Pacific Ocean |
| - location | San Gregorio, California |
| - elevation | 0 ft (0 m) |
| - coordinates | 37°19′15″N 122°24′12″W / 37.32083°N 122.40333°WCoordinates: 37°19′15″N 122°24′12″W / 37.32083°N 122.40333°W |
San Gregorio Creek (Spanish for: ) is a river in San Mateo County, California. Its tributaries originate on the western ridges of the Santa Cruz Mountains whence it courses southwest through steep forested canyons. The San Gregorio Creek mainstem begins at the confluence of Alpine and La Honda Creeks, whence it flows 12 miles (19 km) through rolling grasslands and pasturelands until it meets the Pacific Ocean at San Gregorio State Beach. It traverses the small unincorporated communities of La Honda, San Gregorio, Redwood Terrace and Sky Londa.
San Gregorio Creek is historically significant as the campsite for Spanish explorer Gaspar de Portolà's expedition from October 24–27, 1769, when he overshot his goal (Monterey Bay) and went on to Pacifica where he ascended Sweeney Ridge and discovered San Francisco Bay. The site is registered as California Historical Landmark 26. The creek was called Arroyo de San Gregorio in Spanish times and later, Arroyo Rodrigues in the 1850s.
The San Gregorio watershed is located approximately 11 miles (18 km) south of Half Moon Bay and covers approximately 61 square miles (160 km2). It is the second largest drainage in coastal San Mateo County, with approximately 45 miles (72 km) of "blue line" (perennial) streams. The mainstem of San Gregorio Creek begins at the confluence of Alpine Creek and La Honda Creek in La Honda, and flows 11.8 miles (19.0 km) to its mouth at San Gregorio State Beach in San Gregorio.
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Wikipedia