Rivers in Texas
Llano River near Mason
Below flood stage
5.95ftStage
Observed Sun, Sep 20, 1:15 PM CDT
- Flood stage
- 18.00 ft
- Record crest
- 46.00 ft1935
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 28.00 ft |
| Moderate flood | 24.00 ft |
| Minor flood | 18.00 ft |
| Action | 11.00 ft |
- 28.00 ftMajor lowland flooding will occur. Roads and low water crossings will be flooded and impassible.
- 24.00 ftModerate lowland flooding will occur. Secondary roads and low water crossings will be flooded and impassible.
- 18.00 ftMinor lowland flooding will occur. Secondary roads and low water crossings will become flooded.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 9% |
| Moderate flooding | 6% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
25 crests on NOAA’s list since 1935.
| # | Date | Stage |
|---|---|---|
| 1 | June 14, 1935 | 46.00 ft |
| 2 | September 8, 1980 | 37.00 ft |
| 3 | October 16, 2018 | 34.21 ft |
| 4 | November 4, 2000 | 32.00 ft |
| 5 | June 13, 2008 | 31.33 ft |
| 6 | July 4, 2025 | 29.91 ft |
| 7 | July 18, 2026 | 26.97 ft |
| 8 | October 13, 1973 | 26.30 ft |
| 9 | December 31, 1984 | 25.22 ft |
| 10 | October 13, 1981 | 25.06 ft |
| 11 | July 24, 2024 | 24.08 ft |
| 12 | October 8, 2018 | 22.68 ft |
| 13 | November 17, 2004 | 21.59 ft |
| 14 | August 3, 1978 | 21.35 ft |
| 15 | July 14, 2025 | 20.29 ft |
| 16 | October 5, 1969 | 18.53 ft |
| 17 | July 12, 1988 | 18.40 ft |
| 18 | November 15, 2001 | 17.74 ft |
| 19 | May 3, 1990 | 17.49 ft |
| 20 | April 16, 1977 | 16.64 ft |
| 21 | August 24, 1998 | 16.38 ft |
| 22 | September 18, 1990 | 14.78 ft |
| 23 | October 9, 2018 | 14.53 ft |
| 24 | September 17, 1991 | 10.13 ft |
| 25 | June 13, 2008 | 0.61 ft |
Most recent crests
- July 18, 2026: 26.97 ft
- July 14, 2025: 20.29 ft
- July 4, 2025: 29.91 ft
- July 24, 2024: 24.08 ft
- October 16, 2018: 34.21 ft
- October 9, 2018: 14.53 ft
- October 8, 2018: 22.68 ft
- June 13, 2008: 31.33 ft
- June 13, 2008: 0.61 ft
- November 17, 2004: 21.59 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the West Gulf River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. 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.