Is the Chehalis River flooding?
The Chehalis River is tracked by 9 USGS streamgauges in Washington. 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 Chehalis River is running normal, rising toward flood stage, or already flooding. 2 of 9 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 Washington river levels.
River facts
The longest-running gauge on this river is Chehalis River near Grand Mound, WA. The highest level ever recorded there was 145.21 ft on 8 January 2022, carrying 51,300 cfs. Peak records there go back to 1929 (97 annual peaks).
| Gauge | Status | Stage | Flood stage | Updated |
|---|---|---|---|---|
| Chehalis River near Doty, WA | No flooding | 306.36 ft | 318 ft | |
| Chehalis River at Porter, WA | No flooding | 30.71 ft | 48 ft | |
| Chehalis River above Mahaffey Creek near Pe Ell, WA | No current data | — | — | — |
| Chehalis River near Grand Mound, WA | No current data | — | 141 ft | — |
| Chehalis River near Satsop, WA | No current data | — | — | — |
| Chehalis River near Adna, WA | No flood stage defined | 193.18 ft | — | |
| Chehalis River at Wwtp at Chehalis, WA | No flood stage defined | 152.18 ft | — | |
| Chehalis River near Rochester, WA | No flood stage defined | 103.98 ft | — | |
| Chehalis River near Montesano, WA | No flood stage defined | 4.87 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.