San Gregorio C a San Gregorio CA
Current readings are unavailable. Current flood status cannot be determined. Official flood thresholds remain available below. Check the linked USGS and NWS sources for the latest information.
Gauge height
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Streamflow
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Minor flooding here begins at 17.7 ft, with major flooding at 25 ft.
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 15 ft | — |
| Minor flood | 17.7 ft | — |
| Moderate flood | 21 ft | — |
| Major flood | 25 ft | — |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Pescadero C near Pescadero CA | 5.5 mi | San Mateo County |
| Butano C near Pescadero CA | 6.4 mi | San Mateo County |
| Pilarcitos C a Half Moon Bay CA | 10.1 mi | San Mateo County |
| San Francisquito C a Stanford University CA | 12.7 mi | Santa Clara County |
| Pilarcitos C below Stone Dam near Hillsborough CA | 13.7 mi | San Mateo County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.