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Steelhead in San Mateo Creek spawn primarily in the winter, when heavy storm runoff from the Santa Ana and Santa Margarita Mountains raises the creek's flow enough to breach the sandbar at San Onofre State Park. In the few weeks or months following when there is still a substantial flow in the creek, the steelhead spawn and then the adults ...
Declared federally endangered in 1997, [3] the geographic range of the DPS when first listed extended from the Santa Maria River south to Malibu Creek. In 2002 steelhead were discovered in San Mateo Creek on the county line of Orange and San Diego counties.
Early survey of San Mateo Creek in 1856. After discovering San Francisco Bay from Sweeney Ridge on November 4, 1769, the Portolà expedition descended what Portolà called the Cañada de San Francisco, now San Andreas Creek (or possibly San Mateo Creek). "Laguna Grande" is where the party camped (now covered by the Upper Crystal Springs Reservoir).
Construction of the 1868 dam would have trapped salmonids such as coho salmon (Oncorhynchus kisutch) and coastal rainbow trout (Oncorhynchus mykiss irideus) as both stream resident and steelhead life forms, both known to have been historically present in the San Mateo Creek watershed. San Mateo Creek once hosted coho salmon as evidenced by ...
Steelhead smolt spend the first two years of their lives in freshwater, requiring perennial streams, or at least pools, to survive. [10] The anomalously low gradient of the channel of West Union Creek is related to its course along the San Andreas Fault and creates high quality steelhead habitat, as do the numerous seeps and springs along the ...
Stagecoach between San Mateo and Pescadero, c. 1890 Old Town, Pescadero, California. The town of Pescadero is located on the Rancho Pescadero Mexican land grant; former Mission Santa Cruz pasture given to Juan José Gonzalez in 1833. Alexander Moore (1823–1902), an American pioneer, built his home in Pescadero Valley in 1853. [9]
The US military has significantly increased its surveillance of Mexican drug cartels over the past two weeks, with sophisticated spy planes flying at least 18 missions over the southwestern US and ...
These species include—coho salmon (endangered), [1] steelhead (threatened), [2] Tidewater Goby, San Francisco Garter Snake, and California Red-legged frog. There is another Weeks Creek in the Pescadero Creek watershed of western San Mateo County, [3] which is known for a large landslide/ [4