You’re right, that was a lot of rain

National Weather Service Meteorologist Dalton Behringer said Redwood City and SFO received roughly 150% of the normal rainfall levels seen at this point in the “water year,” which begins in October. While there could be some light drizzle on Thursday, the rest of the week will be dry.

“It’s going to be dry and chilly. At least through the next week there is really no rain in sight,” Behringer said.

Unsurprisingly, water surface levels at the Lower Crystal Springs Reservoir inched higher since Dec. 21, 2025, going from about 280 feet to 282.7 as of Tuesday.

Most Peninsula cities experienced some minor, localized flooding, an improvement from a couple years ago when a New Year’s Eve storm caused severe damage throughout several parts of the county.

In response, San Mateo passed a ballot initiative that imposes a monthly fee for property owners to go toward improving stormwater infrastructure, which Public Works Director Matt Fabry said has helped prevent severe flooding since.

“It’s been making a difference,” he said.

Fabry added the city had three minor incidents of sanitary sewer spills during the recent storms, where some rainfall gets into the sewer system, but overall it did not lead to major flooding or damage.

“Our storm drains are meant to accommodate a 10-year storm event, so even though it was a lot of rain, it came in relatively manageable amounts,” he said.

Half Moon Bay and other coastal areas experienced some minor flooding, though City Manager Matt Chidester said via email that the biggest issues were related to fallen trees due to high winds and subsequent power outages.