Is the San Mateo Creek flooding?
The San Mateo Creek is tracked by 4 USGS streamgauges in California. This page compares each gauge’s live water level against its official National Weather Service flood stage, refreshed every 15 minutes, so you can tell whether the San Mateo Creek is running normal, rising toward flood stage, or already flooding. 0 of 4 gauges have both a usable water-level reading and a published minor flood stage. Gauges without a published flood stage show water level and flow only. For nearby rivers, see all California river levels.
River facts
The longest-running gauge on this river is San Mateo C near San Clemente CA. The highest level ever recorded there was 12.83 ft on 23 February 1998, carrying 12,500 cfs. Peak records there go back to 1953 (47 annual peaks).
| Gauge | Status | Stage | Flood stage | Updated |
|---|---|---|---|---|
| San Mateo C near San Clemente CA | No current data | — | — | — |
| San Mateo C above Junction Box a Dam1 near Hillsborough | No flood stage defined | 0.11 ft | — | |
| San Mateo C below Junction Box a Dam1 near Hillsborough | No flood stage defined | 0.30 ft | — | |
| San Mateo C below Lo Crystal Sp Reservoir near San Mateo CA | No flood stage defined | 4.13 ft | — |
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.