Cowlitz River at Castle Rock, WA
Is Cowlitz River at Castle Rock, WA flooding right now?
Cowlitz River at Castle Rock, WA measured 33.66 ft on 2026-09-11 01:30:00 UTC. That observation was 14.3 ft below its 48 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
33.66 ft
Streamflow
3,960 cfs
Minor flooding here begins at 48 ft, with major flooding at 57 ft. The highest crest on record was 55.76 ft on Thu, Feb 8, 1996.
Flood forecast
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 46 ft | 12.3 ft below |
| Minor flood | 48 ft | 14.3 ft below |
| Moderate flood | 54 ft | 20.3 ft below |
| Major flood | 57 ft | 23.3 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 55.76 ft | 1996-02-08 |
| 55.16 ft | 1995-11-30 |
| 54.7 ft | 2009-01-08 |
| 52.95 ft | 1980-05-18 |
| 52.45 ft | 2015-12-09 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Toutle River at Tower Road near Silver Lake, WA | 5.4 mi | Cowlitz County |
| South Fork Toutle River at Toutle, WA | 10.9 mi | Cowlitz County |
| South Fork Chehalis River near Wildwood, WA | 14.2 mi | Lewis County |
| North Fork Toutle River at Kid Valley, WA | 15.0 mi | Cowlitz County |
| Nf Toutle River below Srs near Kid Valley, WA | 17.3 mi | Cowlitz 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.