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Frio River at Concan

Highest listed crest 34.40 ftFlood stage 11.0 ft16 crests since 1923

The Frio River at Concan crested at major flood stage 13 times among the 16 crests the National Weather Service lists from 1923 to 2026. The highest, 34.40 ft on July 1, 1932, was major flooding, 23.40 feet above flood stage. 3 other gauges on the Frio River crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest
34.40 ft
July 1, 1932; 162,000 cubic feet per second
Flood stage
11.0 ft
Major flooding from 15.0 ft
Crests at major
13
41st of 370 gauges in Texas
Most recent flood crest
July 16, 2026
19.96 ft, major flooding
Location
Uvalde County
Texas

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Frio River at Concan
Action stage7.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)11.01Oct 16, 2018Minimal or no property damage, but possibly some public threat
Moderate flood stage12.02Oct 8, 2018Some inundation of structures and roads near the stream
Major flood stage15.013Jul 16, 2026Extensive inundation of structures and roads

Every listed crest

16 crests from 1923 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Frio River at Concan, 1923 to 2026 101520253035ft Flood stage 11.0 ftMajor 15.0 ft Sep 18, 1923: 28.80 ft, major floodingJul 1, 1932: 34.40 ft, major flooding; 162,000 cubic feet per secondJun 14, 1935: 29.40 ft, major flooding; 106,000 cubic feet per secondSep 16, 1936: 30.60 ft, major flooding; 119,000 cubic feet per secondJun 16, 1981: 19.82 ft, major flooding; 40,900 cubic feet per secondMay 29, 1987: 18.36 ft, major flooding; 35,800 cubic feet per secondSep 16, 1991: 22.40 ft, major flooding; 50,700 cubic feet per secondOct 28, 1996: 21.59 ft, major flooding; 47,500 cubic feet per secondJun 22, 1997: 24.40 ft, major flooding; 61,000 cubic feet per secondAug 22, 1998: 25.50 ft, major flooding; 67,680 cubic feet per secondJul 2, 2002: 31.20 ft, major floodingJun 26, 2007: 18.47 ft, major flooding; 36,255 cubic feet per secondMay 24, 2015: 13.52 ft, moderate flooding; 20,600 cubic feet per secondOct 8, 2018: 14.36 ft, moderate flooding; 22,976 cubic feet per secondOct 16, 2018: 11.56 ft, minor flooding; 14,614 cubic feet per secondJul 16, 2026: 19.96 ft, major flooding Highest, 34.40 ft, Jul 1, 1932 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Frio River at Concan 1920s: 1 1930s: 3 1940s: 0 1950s: 0 1960s: 0 1970s: 0 1980s: 2 1990s: 4 4 2000s: 2 2010s: 3 2020s: 1 1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Frio River at Concan
1Jul 1, 193234.40+23.40Major162,000
2Jul 2, 200231.20+20.20Major—
3Sep 16, 193630.60+19.60Major119,000
4Jun 14, 193529.40+18.40Major106,000
5Sep 18, 192328.80+17.80Major—
6Aug 22, 199825.50+14.50Major67,680
7Jun 22, 199724.40+13.40Major61,000
8Sep 16, 199122.40+11.40Major50,700
9Oct 28, 199621.59+10.59Major47,500
10Jul 16, 202619.96+8.96Major—
11Jun 16, 198119.82+8.82Major40,900
12Jun 26, 200718.47+7.47Major36,255
13May 29, 198718.36+7.36Major35,800
14Oct 8, 201814.36+3.36Moderate22,976
15May 24, 201513.52+2.52Moderate20,600
16Oct 16, 201811.56+0.56Minor14,614

The worst floods along the Frio River

For this gauge's highest crests, the other gauges on the Frio River that crested above flood stage within a week.

July 1, 1932: 34.40 ft here, major flooding

  • Dry Frio near UvaldeTX · Jul 1, 1932 · 30.00 ft · Major
  • DerbyTX · Jul 4, 1932 · 29.45 ft · Major · its highest
  • TildenTX · Jul 2, 1932 · 28.20 ft · Major

July 2, 2002: 31.20 ft here, major flooding

Gauges on the Frio River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Frio River
Concan this gaugeTX11.034.40 ft, Jul 1, 193213
Dry Frio near UvaldeTX12.035.00 ft, Jan 1, 18947
DerbyTX6.029.45 ft, Jul 4, 19327
TildenTX22.030.06 ft, Jul 10, 200210

Other gauges in Uvalde County

Flood gauges in Uvalde County
Reagan Wells near Uvalde 23N10.033.00 ft, Jan 1, 19806
Dry Frio near Uvalde12.035.00 ft, Jan 1, 18947
Laguna10.029.95 ft, Sep 24, 19558
Uvalde11.028.01 ft, Jul 17, 20267
Sabinal12.040.00 ft, Aug 24, 19196

Uvalde County: every hazard · River floods across the country · Texas

NOAA National Water Prediction Service, gauge CNCT2, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.