Is the Old River flooding?
The Old 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 Old 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.
| Gauge | Status | Stage | Flood stage | Updated |
|---|---|---|---|---|
| Old River near Delta Mendota Canal CA | No current data | — | — | — |
| Old River near Byron CA | No flood stage defined | 4.85 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.