Linda Orengo, 69, surveys flood damage to her home in the Santa Cruz County town of Felton, Calif., where the San Lorenzo River, swelled by torrential rains, reached major flood stage before dawn on Monday, Jan.

Source: https://sentinelcolorado.com/news/nation-world/nation/california-deluge-forces-mass-evacuations-boy-swept-away/

Particular areas of concern are the San Lorenzo River in Santa Cruz County and the Salinas River in Monterey County, the North Bay, Merced County, parts of San Mateo County and Mendocino County.

Source: https://www.sandiegouniontribune.com/news/california/story/2023-01-14/la-me-flood-fears-nor-cal-storms

Roads and homes were flooded by the nearby San Lorenzo River.

Source: https://abc7news.com/bay-area-storm-felton-flooding-san-lorenzo-river-atmospheric/12935008/