Guadalupe River at Gonzales
Texas — Water Level & Flood Stage
Located in Gonzales County, Texas on the Guadalupe River. Live water level data from USGS gauge 08173900, 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
43 ft
Moderate Flood
37 ft
Minor Flood
31 ft
Action Stage
17 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
48 ft
Flow passes through the windows of the old power plant. Nearly all of the city park is under several feet of water. The flood plain northwest of town below the Guadalupe-San Marcos Rivers confluence is several miles wide. Lowest homes along miles of Tinsley Creek are flooded as the Guadalupe River backs into it.
45 ft
Flow reaches the floor of the old power plant and to the slab of the electric plant. Water is several feet deep in the baseball and concession buildings in the city park. Flooding is several miles wide in the flood plain just northwest of Gonzales. Flow approaches lower homes in the Tinsley Creek flood plain in Gonzales as the Guadalupe River backs up. Any flow down Tinsley Creek over the backflow can flood homes.
43 ft
Major flooding closes Highways 183, 97 and Farm to Market 108. Runoff down Tinsley Creek in Gonzales added to the Guadalupe River backwater can flood lowest homes near the creek. Secondary roads and streets near the river are flooded and dangerous to motorists.
40 ft
Moderate lowland flooding inundates a large area of pastureland northwest of Gonzales between the Guadalupe and San Marcos Rivers. Flood waters approach the city park storage garage while much of the park in Gonzales is flooded with lowest areas up to 9 feet. Many secondary roads in the flood plain are flooded and closed including CR 197.
37 ft
Moderate lowland flooding inundates pasture and cropland between the Guadalupe/San Marcos river confluence and Gonzales. Secondary roads, low bridges and much of the city park and facilities near the river in Gonzales are flooded.
34 ft
Pastureland northwest of Gonzales between the Guadalupe and San Marcos Rivers is flooded. Lowest areas of the city park flood.
31 ft
Minor lowland flooding begins to enter the Gonzales City Park.
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 | 50.44 ft | 340,000 cfs |
| Oct 18, 1998 | 50.44 ft | 340,000 cfs |
| May 28, 1929 | 50.43 ft | — |
| May 28, 1929 | 50.43 ft | — |
| Nov 23, 2004 | 44.38 ft | 101,000 cfs |
About This Gauge
USGS Site
NWS LID
GNLT2
River
Guadalupe River
County
Gonzales, TX
Coordinates
29.4843°N, 97.4475°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 Gonzales?
The Guadalupe River at Gonzales gauge is maintained by USGS (site 08173900) 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 Gonzales?
The NWS-defined flood stage for Guadalupe River at Gonzales is 31 feet. Action stage begins at 17 feet. Moderate flooding starts at 37 feet, and major flooding at 43 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 Gonzales 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 Gonzales gauge located?
The gauge is located in Gonzales County, Texas at coordinates 29.4843°N, 97.4475°W. USGS site number: 08173900. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: USGS 08173900, 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.