Frio River near Derby, TX
River level and flood forecast · Frio County
Normal-0.8 ftas of Mon 3:30 PM
The river is 6.8 ft below flood stage (6 ft).
Flow: 0 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 17 ft |
| Moderate flood stage | 7 ft |
| Flood stage | 6 ft |
| Action stage | 6 ft |
| Record crest (July 4, 1932) | 29.45 ft |
What floods at each level
From the National Weather Service, highest first.
- 17 ftMajor 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.
- 14 ftSignificant 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.
- 10 ftLowland 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.
- 7 ftModerate lowland flooding closes Farm to Market 1581 near Derby.
- 6 ftMinor lowland flooding reaches the Farm to Market 1581 bridge floor.
Highest crests on record
- 29.45 ft — July 4, 1932
- 23.7 ft — June 2, 1935
- 22.02 ft — July 21, 2007
- 21.77 ft — June 24, 1997
- 20.51 ft — July 18, 2026
Recent crests: 20.51 ft (July 18, 2026) · 9.4 ft (October 18, 2018) · 9.09 ft (October 12, 2018) · 9.02 ft (September 24, 2018) · 9.95 ft (September 18, 2018)
Up and down the river, and nearby
- UpstreamFrio River below Dry Frio near Uvalde, TX
- DownstreamFrio River at Tilden, TX
- Nueces River at Cotulla, TX
- Nueces River near Asherton, TX
- San Miguel Creek near Tilden, TX
- Nueces River at FM 1025 Near Crystal City, TX
- Atascosa River at FM 476 near Pleasanton, TX
- Hondo Creek at SH 173 near Hondo, TX
- Seco Creek at Rowe Ranch near D'Hanis, TX
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (DBYT2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.