Guadalupe River at Seguin
Texas — Water Level & Flood Stage
Located in Guadalupe County, Texas on the Guadalupe River. Live water level data from USGS gauge 08169740, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
26 ft
Moderate Flood
22 ft
Minor Flood
19 ft
Action Stage
17 ft
2,208 cfs
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
32 ft
Several homes in low areas of the flood plain in Seguin are destroyed. Several structures are washed downstream. Nearly all of Treasure Island at Lake McQueeny is under water with homes severely flooded and damaged. Livestock in the flood plain above Seguin to below Cuero are cut off and potentially drowned.
29 ft
Widespread disastrous flooding destroys lowest homes in the flood plain and damages many more. Numerous roads and bridges are severely flooded and dangerous.
26 ft
Major flooding damages several homes in the Glen Cove Subdivision and downstream. Numerous roads, streets and bridges are extremely dangerous. Livestock should be moved from the flood plain immediately.
22 ft
Moderate lowland flooding threatens homes in the Glen Cove Subdivdision in Seguin. Roads and low bridges near the river are flooded and dangerous. Runoff down Walnut Branch northwest of downtown Seguin threatens lowest homes and apartments.
19 ft
Minor lowland flooding is in low areas of the flood plain approaching but not reaching lowest homes in Seguin. Runoff down Walnut Branch northwest of downtown Seguin is a threat to lowest homes and apartments. Flood waters have reached the lowest row of RV lots at the River Shade RV Park near the HWY 123 bridge.
17 ft
Water starts to threaten RV lots closest to the river at the River Shafe RV Park near the HWY 123 bridge.
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 17, 1998 | 36.8 ft | — |
| Oct 17, 1998 | 36.8 ft | — |
| Jun 15, 1935 | 35.5 ft | — |
| Jun 15, 1935 | 35.5 ft | — |
| Sep 10, 1952 | 33.9 ft | — |
Flood Inundation Map
NOAA has mapped what areas flood at different water levels for this gauge. View the interactive flood inundation map →
About This Gauge
USGS Site
NWS LID
SEGT2
River
Guadalupe River
County
Guadalupe, TX
Coordinates
29.5519°N, 97.9697°W
Get Flood Alerts for Guadalupe 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 Guadalupe River at Seguin?
The Guadalupe River at Seguin gauge is maintained by USGS (site 08169740) 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 at Seguin?
The NWS-defined flood stage for Guadalupe River at Seguin is 19 feet. Action stage begins at 17 feet. Moderate flooding starts at 22 feet, and major flooding at 26 feet.
How do I get alerts when Guadalupe River rises?
Download StormCast free on Google Play, go to River Gauges, and add Guadalupe River at Seguin 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 at Seguin gauge located?
The gauge is located in Guadalupe County, Texas at coordinates 29.5519°N, 97.9697°W. USGS site number: 08169740. 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, Observations courtesy of U.S. Army Corps of Engineers
- 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.