OneShoreline

Creek Conditions

OneShoreline Early Warning · San Mateo County
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San Mateo County

‹ All creeks
Rainfall (inches)
Tide (measured)
– ft
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About this page

Creek water levels (stage) measured by OneShoreline's creek gauges, with each gauge's flood thresholds: Flood Monitoring (yellow), Flood Watch (orange) and Flood Warning (red). These are levels on OneShoreline's gauges, not National Weather Service alerts. Use the buttons at the top to switch creeks.

Rainfall at the creek's rain gauges and the Bay tide nearby. Creeks near the Bay rise and fall with the tide, so a rise can come from rain, a high tide, or both.

Measured above the tide table means storms, wind or runoff are pushing the Bay higher than the tide alone. Upcoming high tides will likely run higher too.

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Disclaimer

Data sources

OneShoreline Early Warning System (OneRain) for creek stage and rainfall · USGS stream gauges for some of the "more creeks" · NOAA Tides & Currents stations 9414750 (Alameda) and 9414523 (Redwood City) for tides · National Weather Service for alerts. The tide table does not include storm surge. This page refreshes automatically.

OneShoreline
Operated by OneShoreline, the San Mateo County Flood and Sea Level Rise Resiliency District · oneshoreline.org