Guadalupe River (CA) above Almaden Expressway
California — Water Level & Flood Stage
Located in Santa Clara County, California on the Guadalupe River (CA). Live water level data from USGS, updated every 15 minutes.
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: GUDC1). Live data may be limited. View on NWS AHPS →
Flood Stages
Major Flood
12 ft
6,407 cfs
Moderate Flood
11 ft
5,509 cfs
Minor Flood
10.5 ft
5,060 cfs
Action Stage
9 ft
3,762 cfs
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
12 ft
Major Flood Stage. Flooding continues to spill near Alam Avenue, flowing northward and crossing east under Willow Street and Alma Avenue viaducts, continuing to flow north. Overbanking occurs at Atlanta Avenue just upstream of CA87. The Willow Glen Neighborhood bounded by Willow Street and Minnesota Avenue see overland flooding. Overbanking occurs in various locations between Alma Avenue and Willow Glen Way. Potential flooding on Ross and Canoas Creeks due to high backwater caused by Guadalupe River.
11.73 ft
Historical High Water - January 1995
11 ft
Moderate Flood Stage. River continues to overtop upstream of Alma Avenue Bridge into the Elks Lodge, spilling north along Lelong Street. Alma Avenue/CA87 viaduct is flooded. Creek overbanks west near Minnesota Avenue downstream of Alma Avenue. Properties south of the old UPRR alignment in the Northern Cross Neighborhood also at risk.
10.5 ft
Minor Flood Stage. River begins to overtop upstream of Alma Avenue Bridge into the Elks Lodge, spilling north , as well as near the RxR on the east bank.
9 ft
Action Stage: Additional flow from Canoas Creek watershed or increased reservoir spills may bring river to flood stage.
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 |
|---|---|---|
| Jan 9, 1995 | 11.73 ft | 8,470 cfs |
| Jan 9, 1995 | 11.73 ft | 8,470 cfs |
| Feb 2, 1998 | 10.5 ft | 6,780 cfs |
| Feb 2, 1998 | 10.5 ft | 6,780 cfs |
| Mar 10, 1995 | 9.64 ft | 5,590 cfs |
About This Gauge
NWS LID
GUDC1
River
Guadalupe River (CA)
County
Santa Clara, CA
Coordinates
37.2808°N, 121.8802°W
Get Flood Alerts for Guadalupe River (CA)
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 Guadalupe River (CA) above Almaden Expressway?
The Guadalupe River (CA) above Almaden Expressway 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 Guadalupe River (CA) above Almaden Expressway?
The NWS-defined flood stage for Guadalupe River (CA) above Almaden Expressway is 10.5 feet. Action stage begins at 9 feet. Moderate flooding starts at 11 feet, and major flooding at 12 feet.
How do I get alerts when Guadalupe River (CA) rises?
Download StormCast free on Google Play, go to River Gauges, and add Guadalupe River (CA) above Almaden Expressway to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Guadalupe River (CA) above Almaden Expressway gauge located?
The gauge is located in Santa Clara County, California at coordinates 37.2808°N, 121.8802°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: Valley Water