River stage
Mason, Llano River
- River level
- 6.61 ft
- Status
- Below flood stage
- 7-day change
- -0.89 ft
- Recent high
- 22.38 ft
- Recent low
- 5.47 ft
Last reported 2026-10-13 | NWS MLRT2
- 30-day change
- +0.51 ft
- Average
- 7.11 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 46.00 ft
In brief
The Llano River at Mason, TX read 6.61 ft on Oct 13, 2026, 4.39 ft below action stage. That is 0.51 ft higher than 30 days earlier.
Source: National Weather Service gauge MLRT2
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 46.00 ft | 1935-06-14 |
| 2 | 37.00 ft | 1980-09-08 |
| 3 | 34.21 ft | 2018-10-16 |
| 4 | 32.00 ft | 2000-11-04 |
| 5 | 31.33 ft | 2008-06-13 |
| 6 | 29.91 ft | 2025-07-04 |
| 7 | 26.30 ft | 1973-10-13 |
| 8 | 25.22 ft | 1984-12-31 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 18.00 ft
Minor lowland flooding will occur. Secondary roads and low water crossings will become flooded.
- 24.00 ft
Moderate lowland flooding will occur. Secondary roads and low water crossings will be flooded and impassible.
- 28.00 ft
Major lowland flooding will occur. Roads and low water crossings will be flooded and impassible.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Llano River flooding at Mason?
No. The Llano River at Mason is at 6.61 ft, 4.39 ft below action stage.
What is the flood stage at Mason?
The National Weather Service sets action stage 11 ft, minor flooding 18 ft, moderate flooding 24 ft and major flooding 28 ft.
What is the highest the Llano River has been at Mason?
The highest crest on record is 46.0 ft, on 1935-06-14.
Is the Llano River high or low right now at Mason?
At 6.61 ft it is higher than 57% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge MLRT2); daily history from the U.S. Geological Survey (site 08150700). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.