Major Flood
31.7 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: PCRC1). 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
27 ft
Minor Flood
24.9 ft
Action Stage
24.9 ft
What Floods at Each Level
32.2 ft
1986 flood levels (high water marks) reached.
31.7 ft
Major Flood Stage. Water reaches height of Corona Road bridge deck.
28.6 ft
Petalume Blvd. north bound curb lanes flooded. City will close Petaluma Blvd. at Corona Road.
28.2 ft
Industrial Road flooded and should be closed.
27.7 ft
Storm drain system begins to backwater onto Industrial Avenue near Corona Road.
27 ft
Moderate Flood Stage. NWS issues a Flash Flood Warning if not already issued.
26.7 ft
City of Petaluma City Manager notified.
25.2 ft
City of Petaluma notifies Fire Chief, Watch Commander, and Water Resources and Conservation Director. City evaluates need to open Emergency Operations Center.
24.9 ft
Minor Flood Stage. Water begins to cross New Path to rain gage and begins inundating parking lot behind commercial buildings. NWS will issue an urban/small stream advisory if not already issued.
22.7 ft
Action Stage. NWS and City of Petaluma begins to monitoring situation closely.
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 |
|---|---|---|
| Feb 2, 1998 | 27.98 ft | — |
| Feb 7, 1998 | 25.49 ft | — |
| Jan 25, 1997 | 25.2 ft | — |
About This Gauge
NWS LID
PCRC1
River
Petaluma River
County
Sonoma, CA
Coordinates
38.2617°N, 122.6606°W
Get Flood Alerts for Petaluma 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 Petaluma River at Corona Road?
The Petaluma River at Corona Road 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 Petaluma River at Corona Road?
The NWS-defined flood stage for Petaluma River at Corona Road is 24.9 feet. Action stage begins at 24.9 feet. Moderate flooding starts at 27 feet, and major flooding at 31.7 feet.
How do I get alerts when Petaluma River rises?
Download StormCast free on Google Play, go to River Gauges, and add Petaluma River at Corona Road 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 Petaluma River at Corona Road gauge located?
The gauge is located in Sonoma County, California at coordinates 38.2617°N, 122.6606°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Petaluma River
More Resources
Source & Notes
Data provided by: City of Petaluma