Major Flood
7.45 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: ARTC1). 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
5.7 ft
Minor Flood
4.2 ft
Action Stage
3.9 ft
What Floods at Each Level
7.45 ft
Widespread flooding below Alamo Street and most of central Simi Valley
5.7 ft
Flooding below Los Angeles Avenue and expanding flooding along Sequoia Avenue
4.2 ft
Flooding along Sequoia Avenue
3.9 ft
Increased river patorls along Arroyo Tapo
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
ARTC1
River
Arroyo Tapo
County
Ventura, CA
Coordinates
34.2972°N, 118.7210°W
Get Flood Alerts for Arroyo Tapo
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 Arroyo Tapo at Walnut?
The Arroyo Tapo at Walnut 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 Arroyo Tapo at Walnut?
The NWS-defined flood stage for Arroyo Tapo at Walnut is 4.2 feet. Action stage begins at 3.9 feet. Moderate flooding starts at 5.7 feet, and major flooding at 7.45 feet.
How do I get alerts when Arroyo Tapo rises?
Download StormCast free on Google Play, go to River Gauges, and add Arroyo Tapo at Walnut 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 Arroyo Tapo at Walnut gauge located?
The gauge is located in Ventura County, California at coordinates 34.2972°N, 118.7210°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: Ventura County Watershed Protection District