Major Flood
48 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
39 ft
Minor Flood
35 ft
Action Stage
33 ft
What Floods at Each Level
60 ft
Downstream in Wilson county people cut off by numerous flooded Farm to Market roads. Numerous homes are flooded in Wilson county as well.
52 ft
Widespread major flooding damages crops and pastureland. Roads and bridges are flooded and dangerous. Oil field pump jacks and irrigation pumps are flooded and damaged. Many livestock can be cut off and drowned.
48 ft
Major flooding near Elmendorf to above Goliad State Park isolates livestock, damages crops and roads, floods oil field tank batteries, pump jacks, irrigation pumps, and any equipment in the flood plain. Flooding is widespread.
45 ft
Moderate lowland flooding inundates crop and pastureland below San Antonio to below Floresville. Roads and bridges in the flood plain are flooded. Pump jacks and oil field tank batteries flood.
43 ft
Moderate lowland flooding inundates and damages crop and pastureland below San Antonio to below Floresville. Numerous roads and bridges are flooded. Oil well pump jacks and irrigation pumps are flooded and damaged.
39 ft
Moderate lowland flooding damages crops and floods pastureland below San Antonio to below Floresville. Secondary roads and low bridges, irrigation pumps, oil field pump jacks and tank batteries flood. Livestock are cut off in low areas.
35 ft
Minor lowland flooding inundates crop and pastureland below San Antonio to below Floresville.
33 ft
Overbank conditions may cut off livestock in low 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 |
|---|---|---|
| Oct 18, 1998 | 64.2 ft | 75,000 cfs |
| Jul 5, 2002 | 63.16 ft | 66,000 cfs |
| Sep 26, 1946 | 61 ft | — |
About This Gauge
USGS Site
NWS LID
ELMT2
River
San Antonio River
County
Bexar, TX
Coordinates
29.2219°N, 98.3556°W
Get Flood Alerts for San Antonio 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 San Antonio River at Elmendorf?
The San Antonio River at Elmendorf gauge is maintained by USGS (site 08181800) 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 San Antonio River at Elmendorf?
The NWS-defined flood stage for San Antonio River at Elmendorf is 35 feet. Action stage begins at 33 feet. Moderate flooding starts at 39 feet, and major flooding at 48 feet.
How do I get alerts when San Antonio River rises?
Download StormCast free on Google Play, go to River Gauges, and add San Antonio River at Elmendorf 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 San Antonio River at Elmendorf gauge located?
The gauge is located in Bexar County, Texas at coordinates 29.2219°N, 98.3556°W. USGS site number: 08181800. 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.