Rivers in Texas
Guadalupe River at Gonzales
Below flood stage
11.24ftStage
Observed Wed, Sep 23, 7:45 AM CDT
- Flood stage
- 31.00 ft
- Forecast crest
- 11.30 ftWed, Sep 23, 10:00 AM CDT
- Record crest
- 50.44 ft1998
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 43.00 ft |
| Moderate flood | 37.00 ft |
| Minor flood | 31.00 ft |
| Action | 17.00 ft |
- 48.00 ftFlow 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.
- 45.00 ftFlow 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.
- 43.00 ftMajor 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.
- 40.00 ftModerate 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.
- 37.00 ftModerate 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.
- 34.00 ftPastureland northwest of Gonzales between the Guadalupe and San Marcos Rivers is flooded. Lowest areas of the city park flood.
- 31.00 ftMinor lowland flooding begins to enter the Gonzales City Park.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 16% |
| Moderate flooding | 14% |
| Major flooding | 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
39 crests on NOAA’s list since 1913.
| # | Date | Stage |
|---|---|---|
| 1 | October 19, 1998 | 50.44 ft |
| 2 | May 29, 1929 | 50.43 ft |
| 3 | November 23, 2004 | 44.38 ft |
| 4 | July 7, 2002 | 42.64 ft |
| 5 | August 28, 2017 | 42.50 ft |
| 6 | May 25, 2015 | 42.13 ft |
| 7 | November 1, 2015 | 41.97 ft |
| 8 | October 16, 2021 | 40.93 ft |
| 9 | March 13, 2007 | 40.53 ft |
| 10 | July 22, 2007 | 40.25 ft |
| 11 | January 26, 2012 | 39.76 ft |
| 12 | November 17, 2001 | 39.19 ft |
| 13 | June 24, 1997 | 38.80 ft |
| 14 | July 1, 1936 | 38.20 ft |
| 15 | December 4, 1913 | 38.10 ft |
| 16 | June 11, 2010 | 37.74 ft |
| 17 | April 22, 1926 | 36.40 ft |
| 18 | July 7, 1942 | 35.10 ft |
| 19 | December 22, 1991 | 35.01 ft |
| 20 | June 5, 1987 | 34.70 ft |
| 21 | May 8, 1972 | 34.60 ft |
| 22 | October 30, 1960 | 34.50 ft |
| 23 | September 12, 1952 | 34.30 ft |
| 24 | October 18, 1919 | 34.10 ft |
| 25 | June 15, 1981 | 33.47 ft |
Most recent crests
- October 16, 2021: 40.93 ft
- May 3, 2020: 18.71 ft
- March 30, 2018: 32.25 ft
- August 28, 2017: 42.50 ft
- June 2, 2016: 30.58 ft
- November 1, 2015: 41.97 ft
- May 25, 2015: 42.13 ft
- May 19, 2015: 32.86 ft
- November 1, 2013: 28.94 ft
- January 26, 2012: 39.76 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the West Gulf River Forecast Center. Forecasts are issued routinely year-round. 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.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.