River stage
Derby, Frio River
- River level
- -0.82 ft
- Status
- Below flood stage
- 7-day change
- +0.00 ft
- Recent high
- 20.25 ft
- Recent low
- -0.89 ft
Last reported 2026-10-13 | NWS DBYT2
- 30-day change
- +0.00 ft
- Average
- 0.59 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 29.45 ft
In brief
The Frio River at Derby, TX read -0.82 ft on Oct 13, 2026, 6.82 ft below action stage. That is unchanged from 30 days earlier.
Source: National Weather Service gauge DBYT2
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 29.45 ft | 1932-07-04 |
| 2 | 23.70 ft | 1935-06-02 |
| 3 | 22.02 ft | 2007-07-21 |
| 4 | 21.77 ft | 1997-06-24 |
| 5 | 20.51 ft | 2026-07-18 |
| 6 | 19.87 ft | 2002-07-07 |
| 7 | 17.29 ft | 1987-05-31 |
| 8 | 13.66 ft | 2015-05-26 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 6.00 ft
Minor lowland flooding reaches the Farm to Market 1581 bridge floor.
- 7.00 ft
Moderate lowland flooding closes Farm to Market 1581 near Derby.
- 10.00 ft
Lowland flooding below Concan to Choke Canyon Reservoir floods oil well pump jacks, irrigation pumps and any equipment in the lower flood plain near and above Derby.
- 14.00 ft
Significant crop and pastureland flooding below Uvalde to Choke Canyon Reservoir floods oil well pump jacks, irrigation pumps and any equipment in the flood plain. Numerous secondary roads and low bridges are flooded. Livestock are cut off and potentially drowned in low areas of the flood plain.
- 17.00 ft
Major flooding reaches lowest homes and businesses downstream in Tilden. Hundreds of livestock are trapped and potentially drowned in low areas of the flood plain near Derby to Choke Canyon Reservoir. Major flooding of crop and pasture land near the river inundates oil well pump jacks and irrigation pumps.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Frio River flooding at Derby?
No. The Frio River at Derby is at -0.82 ft, 6.82 ft below action stage.
What is the flood stage at Derby?
The National Weather Service sets action stage 6 ft, minor flooding 6 ft, moderate flooding 7 ft and major flooding 17 ft.
What is the highest the Frio River has been at Derby?
The highest crest on record is 29.45 ft, on 1932-07-04.
Is the Frio River high or low right now at Derby?
At -0.82 ft it is higher than 2% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge DBYT2); daily history from the U.S. Geological Survey (site 08205500). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.