Minor Flood
12.66 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: AECC1). 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.
Action Stage
10.66 ft
What Floods at Each Level
12.66 ft
Minor Flood Stage - Flooding is expected. Stage may begin to overtop the top of bank elevation along channel.
10.66 ft
Monitor Stage - Water in channel is at or has exceeded the minimum freeboard elevation and may soon overtop its banks.
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
AECC1
River
Arroyo Las Positas
County
Alameda, CA
Coordinates
37.6952°N, 121.8451°W
Get Flood Alerts for Arroyo Las Positas
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 Las Positas above El Charro Rd?
The Arroyo Las Positas above El Charro Rd 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 Las Positas above El Charro Rd?
The NWS-defined flood stage for Arroyo Las Positas above El Charro Rd is 12.66 feet. Action stage begins at 10.66 feet. Moderate flooding starts at N/A feet, and major flooding at N/A feet.
How do I get alerts when Arroyo Las Positas rises?
Download StormCast free on Google Play, go to River Gauges, and add Arroyo Las Positas above El Charro Rd 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 Las Positas above El Charro Rd gauge located?
The gauge is located in Alameda County, California at coordinates 37.6952°N, 121.8451°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
On This River
Downstream: Arroyo Mocho - Pleasanton
More Resources
Source & Notes
Data provided by: Zone 7 Water Agency