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San Lorenzo Creek is a 10.7-mile-long (17.2 km) year-round natural stream flowing through Hayward, California, into San Francisco Bay at the Hayward Regional Shoreline.
Contents
Map of San Lorenzo Creek, California, USA
WatershedEdit
The creek begins in Castro Valley, and is the main tributary within the San Lorenzo Watershed, including the formerly independent Sulpher Creek, which had most of its flow diverted into San Lorenzo Creek in the 1960s to reduce the risk of flooding in downtown Hayward. Only in large flow events does some of the creek flow follow its old course into the Bay. The creek runs through the town of San Lorenzo and empties into San Francisco Bay. A portion of the San Francisco Bay Trail runs along the mouth of the creek. The Cull Canyon and Don Castro reservoirs, both located within regional parks, feed into the creek.
HistoryEdit
The creek was previously known to Spanish colonists as Arroyo de San Salvador de Horta, and Arroyo de la Harina, from records dating to 1772. The current name for the creek, Arroyo de San Lorenzo, dates to at least 1812, and was recorded as such in land grants from 1841 and 1842.
El Camino Viejo now Mission Boulevard, passed through what is now San Lorenzo, California crossing San Lorenzo Creek where Mission Boulevard crosses it now.