Major Flood
61.7 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: PFSC1). 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
61.2 ft
Minor Flood
60.7 ft
Action Stage
58.7 ft
What Floods at Each Level
62.8 ft
Record stage for this site (2005 floods).
62.5 ft
Water reaches the gazebo floor.
62 ft
Critical threshold at which 2 downstream locations may flood in 2 to 4 hours.
61.7 ft
Major Flood Stage. NWS will issue a Flash Flood Warning if not already issued. At this level, water levels are high in the Petaluma River Basin and adjacent areas. Other creeks in the area are likely flooding.
61.2 ft
Moderate Flood Stage. City of Petalum will evaluate the need to activate the Emergency Operations Center. NWS may issue an Urban/Small Stream Advisory for this level of flooding.
60.7 ft
Minor Flood Stage. Water is above bankfull and minor flooding begins. City of Petaluma Fire Chief, Watch Commander, and Water Resources anc Conservation Director notified. NWS will likely issue an Urban/Small Stream Advisory.
58.7 ft
Action Stage. Situation is being monitored closely by NWS and City of Petaluma.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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About This Gauge
NWS LID
PFSC1
River
Willow Brook
County
Sonoma, CA
Coordinates
38.2944°N, 122.6631°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 Penngrove Park?
The Willow Brook at Penngrove Park 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 Penngrove Park?
The NWS-defined flood stage for Willow Brook at Penngrove Park is 60.7 feet. Action stage begins at 58.7 feet. Moderate flooding starts at 61.2 feet, and major flooding at 61.7 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 Penngrove Park 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 Penngrove Park gauge located?
The gauge is located in Sonoma County, California at coordinates 38.2944°N, 122.6631°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Willow Brook
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Source & Notes
Data provided by: City of Petaluma