San Andreas Lake near Millbrae, CA
River level and flood forecast · San Mateo County
No current reading446.8 ftas of Tue 3:45 PM
The National Weather Service has no current reading for this gauge, so its flood status isn't known right now.
River camera
Watch the time-lapse
Camera by the U.S. Geological Survey. Most take a picture every hour, some every few minutes; many stop at night.
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 4 PM. Forecasts change as rain falls and as upstream water arrives.
Up and down the river, and nearby
- San Mateo Creek above Junction Box, CA
- San Mateo Creek below Junction Box, CA
- Pilarcitos Lake, CA
- Pilarcitos Creek below Pilarcitos Lake Spillway, CA
- Pilarcitos Creek above Stone Dam, CA
- Pilarcitos Creek below Stone Dam NR Hillsborough, CA
- San Mateo Creek below Lower Crystal Springs Reservoir NR San Mateo, CA
- Lower Crystal Springs Reservoir at Dam, CA
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (XSAC1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.