Major Flood
121 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: MADT2). 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
116 ft
Minor Flood
112 ft
Action Stage
110 ft
What Floods at Each Level
104 ft
Major flooding inside the levees - all irrigation pumps, livestock, and equipment should be removed from inside the Rio Grande river levees below Anzalduas Dam to below Retamal Dam
99 ft
Moderate lowland flooding will cover much of the Rio Grande river flood plain inside the levees - irrigation pumps and equipment should be removed immediately from banks below Anzalduas Dam to below Retamal Dam
95 ft
Minor lowland flooding will exceed the Rio Grande river banks in low sections inside the levees - livestock and pumps should be removed from the lowest flood prone areas
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 |
|---|---|---|
| Jul 19, 2010 | 111.44 ft | 38,290 cfs |
| Oct 14, 1971 | 108.27 ft | 41,700 cfs |
| Sep 22, 1971 | 107.97 ft | 41,300 cfs |
About This Gauge
NWS LID
MADT2
River
Rio Grande
County
Hidalgo, TX
Coordinates
26.1306°N, 98.3361°W
Get Flood Alerts for Rio Grande
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 Rio Grande at Anzalduas Reservior?
The Rio Grande at Anzalduas Reservior 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 Rio Grande at Anzalduas Reservior?
The NWS-defined flood stage for Rio Grande at Anzalduas Reservior is 112 feet. Action stage begins at 110 feet. Moderate flooding starts at 116 feet, and major flooding at 121 feet.
How do I get alerts when Rio Grande rises?
Download StormCast free on Google Play, go to River Gauges, and add Rio Grande at Anzalduas Reservior 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 Rio Grande at Anzalduas Reservior gauge located?
The gauge is located in Hidalgo County, Texas at coordinates 26.1306°N, 98.3361°W. Data is provided by the U.S. Geological Survey and the National Weather Service.