Major Flood
32.5 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: GRRW1). Live data may be limited. View on NWS AHPS →
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
30.5 ft
Minor Flood
28.5 ft
Action Stage
27.5 ft
What Floods at Each Level
32.5 ft
expect major flooding of lowland areas and roads in the vicinity of Hwy 4 and Rosburg. Numerous road closures are likely, including Covered Bridge Road where the river gage is located, Satterlund Road upstream of the gage, and the following downstream of the gage: Altoona Piller Rock Road, including bridge approaches, Loop Road, and Barr Road. Some homes and buildings in low areas near the river are threatened with flooding above this level.
30.5 ft
expect widespread lowland flooding and numerous flooded roads near Rosburg and Hwy 4. These include Covered Bridge Road near the gage and the roadway approaches to the Altoona Bridge downstream of the gage.
28.5 ft
expect some flooding of roads along and near the Grays River, especially downstream of the gage, including roadway approaches to the Altoona Bridge over the Grays, and portions of Covered Bridge Road, Barr-Durrah Road, and Loop Road near Rosburg and Hwy 4.
27.5 ft
there may be some water in low areas and on some secondary roads in the vicinity of Hwy 4 and Rosburg.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Dec 9, 2025 | 33.36 ft | 20,798 cfs |
| Dec 3, 2007 | 33.15 ft | 20,200 cfs |
| Jan 7, 2009 | 32.8 ft | 19,000 cfs |
About This Gauge
NWS LID
GRRW1
River
Grays River
County
Wahkiakum, WA
Coordinates
46.3550°N, 123.5817°W
Get Flood Alerts for Grays River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Grays River at Covered Bridge near Rosburg?
The Grays River at Covered Bridge near Rosburg gauge is maintained by USGS and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Grays River at Covered Bridge near Rosburg?
The NWS-defined flood stage for Grays River at Covered Bridge near Rosburg is 28.5 feet. Action stage begins at 27.5 feet. Moderate flooding starts at 30.5 feet, and major flooding at 32.5 feet.
How do I get alerts when Grays River rises?
Download StormCast free on Google Play, go to River Gauges, and add Grays River at Covered Bridge near Rosburg to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Grays River at Covered Bridge near Rosburg gauge located?
The gauge is located in Wahkiakum County, Washington at coordinates 46.3550°N, 123.5817°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
- The reference level, or vertical datum, for this gage has been updated to NAVD88. That means the stage heights will now be reported from that reference level which will give the water level as height above mean sea level. All flood stages have been changed accordingly.