Is the Santa Ana River flooding?
The Santa Ana River is tracked by 2 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 Santa Ana River is running normal, rising toward flood stage, or already flooding. 0 of 2 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 Santa Ana River below Prado Dam CA. The highest level ever recorded there was 17.32 ft on 2 March 1938, carrying 100,000 cfs. Peak records there go back to 1938 (86 annual peaks).
| Gauge | Status | Stage | Flood stage | Updated |
|---|---|---|---|---|
| Santa Ana River near Mentone (River Only) CA | No current data | — | — | — |
| Santa Ana River below Prado Dam CA | No current data | — | — | — |
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.