Major Flood
28 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
26 ft
Minor Flood
25 ft
Action Stage
16 ft
What Floods at Each Level
48.7 ft
Flood of record - Septemeber 24, 1967 - remnants of Hurricane Beulah (138,000 cfs).
43.5 ft
Massive life threatening flooding occurs, and severely damages residential areas below Bluntzer to Calallen. Major flooding of the flood plain below Lake Corpus Christi to below Bluntzer, floods roads and bridges near the river. Livestock are cut off and potentially drowned. Just below the dam, water is over the Highway 359 bridge around the right end.
29.34 ft
Major lowland flooding occurs, causing widespread evacuations downstream above Calallen. The west bank residents below Bluntzer may be cut off for several weeks.
28 ft
Major lowland flooding occurs, causing widespread evacuations downstream above Calallen. The west bank residents below Bluntzer may be cut off for 4 to 6 weeks.
27 ft
Flow moves into a secondary channel, 700 feet left of main channel, resulting in two channels. These channels merge at 43.5 feet.
26 ft
Moderate lowland flooding occurs. Many homes downstream between Bluntzer and Calallan become flooded, with residents possibly cut off for weeks.
25 ft
Minor lowland flooding occurs. Flow escapes secondary banks of the main channel. There is widespread flooding of the flood plain downstream, between Bluntzer and Calallen, cutting off many homes and residential areas for days and possibly weeks.
20 ft
Overbank conditions continue. Residents downstream near Bluntzer may become isolated.
17 ft
Many homes in flood prone areas downstream above Calallen are cut off and surrounded by water.
16 ft
The river reaches bankfull stage. Short peak releases will flood homes near Calallen.
13 ft
Sustained flow will isolate homes downstream near Calallen.
12 ft
Flow cuts off the lowest homes downstream above Calallen.
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 |
|---|---|---|
| Sep 23, 1967 | 48.7 ft | 138,000 cfs |
| Sep 19, 1919 | 41 ft | 59,000 cfs |
| Sep 15, 2002 | 39.03 ft | 56,120 cfs |
About This Gauge
USGS Site
NWS LID
MTBT2
River
Nueces River
County
San Patricio, TX
Coordinates
28.0381°N, 97.8600°W
Get Flood Alerts for Nueces River
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 Nueces River at Mathis?
The Nueces River at Mathis gauge is maintained by USGS (site 08211000) 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 Nueces River at Mathis?
The NWS-defined flood stage for Nueces River at Mathis is 25 feet. Action stage begins at 16 feet. Moderate flooding starts at 26 feet, and major flooding at 28 feet.
How do I get alerts when Nueces River rises?
Download StormCast free on Google Play, go to River Gauges, and add Nueces River at Mathis 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 Nueces River at Mathis gauge located?
The gauge is located in San Patricio County, Texas at coordinates 28.0381°N, 97.8600°W. USGS site number: 08211000. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.