Major Flood
40.4 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: PTVC1). 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
39 ft
Minor Flood
37.7 ft
Action Stage
33.7 ft
What Floods at Each Level
40.4 ft
Major Flood Stage. Water reaches bridge deck height.
39.3 ft
Water reaches bottom of bridge and soffit.
39.1 ft
Stony Point Road at Petaluma Blvd. flooded.
39 ft
Moderate Flood Stage. Water is above bankfull over north side of levy (pumpkin patch).
38.9 ft
Water starts flowing across Stony Point Road south of Leisure Lake and begins flowing towards Highway 101 around/into the intersection of Petaluma Boulevard North and Stony Point Road. Water begins flowing across Rainsville Road but passable as an emergency exit for Leisure Lake (City of Petaluma Policies and Procedures).
38.7 ft
Stony Point Road south of Leisure Lake flooded and should be closed.
37.4 ft
Minor Flood Stage. NWS issues a Flash Flood Warning if not already issued. Waters reach edge of Stony Point Road south-bound lane.
34.7 ft
City of Petaluma Manager notified. City of Petaluma evaluates need to open Emergency Operations Center.
33.7 ft
Action Stage. NWS and City of Petaluma monitoring gage readings closely. City of Petaluma Fire Chief, Watch Commander, and Water Resources and Conservation Director notified.
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 | 37.13 ft | — |
| Feb 19, 1998 | 37.03 ft | — |
| Feb 7, 1998 | 35.83 ft | — |
About This Gauge
NWS LID
PTVC1
River
Willow Brook
County
Sonoma, CA
Coordinates
38.2744°N, 122.6769°W
Get Flood Alerts for Willow Brook
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 Willow Brook at Stony Point Road?
The Willow Brook at Stony Point 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 Willow Brook at Stony Point Road?
The NWS-defined flood stage for Willow Brook at Stony Point Road is 37.7 feet. Action stage begins at 33.7 feet. Moderate flooding starts at 39 feet, and major flooding at 40.4 feet.
How do I get alerts when Willow Brook rises?
Download StormCast free on Google Play, go to River Gauges, and add Willow Brook at Stony Point 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 Willow Brook at Stony Point Road gauge located?
The gauge is located in Sonoma County, California at coordinates 38.2744°N, 122.6769°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Willow Brook
More Resources
Source & Notes
Data provided by: City of Petaluma