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Beaver Creek (Llano River Basin) near Mason

Highest listed crest 24.00 ftFlood stage 17.0 ft9 crests since 1965

The Beaver Creek (Llano River Basin) near Mason crested above flood stage 5 times among the 9 crests the National Weather Service lists from 1965 to 2026. The highest, 24.00 ft on August 3, 1978, was moderate flooding, 7.00 feet above flood stage.

The gauge

Highest listed crest
24.00 ft
August 3, 1978; 66,900 cubic feet per second
Flood stage
17.0 ft
Major flooding from 25.0 ft
Crests at major
0
5 above flood stage
Most recent flood crest
July 16, 2026
17.52 ft, minor flooding
Location
Mason County
Texas

Flood stages

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

Flood categories, Beaver Creek (Llano River Basin) near Mason
Action stage14.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)17.04Jul 16, 2026Minimal or no property damage, but possibly some public threat
Moderate flood stage20.01Aug 3, 1978Some inundation of structures and roads near the stream
Major flood stage25.00—Extensive inundation of structures and roads

Every listed crest

9 crests from 1965 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Beaver Creek (Llano River Basin) near Mason, 1965 to 2026 10152025ft Flood stage 17.0 ftMajor 25.0 ft May 16, 1965: 13.58 ft, below flood stage; 23,200 cubic feet per secondOct 5, 1970: 12.50 ft, below flood stage; 20,100 cubic feet per secondAug 3, 1978: 24.00 ft, moderate flooding; 66,900 cubic feet per secondMay 3, 1990: 11.06 ft, below flood stage; 16,500 cubic feet per secondOct 28, 1996: 19.60 ft, minor floodingOct 8, 1997: 19.45 ft, minor flooding; 45,900 cubic feet per secondNov 15, 2001: 11.16 ft, below flood stage; 16,800 cubic feet per secondOct 16, 2018: 17.59 ft, minor flooding; 38,900 cubic feet per secondJul 16, 2026: 17.52 ft, minor flooding; 27,000 cubic feet per second Highest, 24.00 ft, Aug 3, 1978 197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Beaver Creek (Llano River Basin) near Mason 1960s: 0 1970s: 1 1980s: 0 1990s: 2 2 2000s: 0 2010s: 1 2020s: 1 1960s1970s1980s1990s2000s2010s2020s
  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, Beaver Creek (Llano River Basin) near Mason
1Aug 3, 197824.00+7.00Moderate66,900
2Oct 28, 199619.60+2.60Minor—
3Oct 8, 199719.45+2.45Minor45,900
4Oct 16, 201817.59+0.59Minor38,900
5Jul 16, 202617.52+0.52Minor27,000
6May 16, 196513.58−3.42Below flood stage23,200
7Oct 5, 197012.50−4.50Below flood stage20,100
8Nov 15, 200111.16−5.84Below flood stage16,800
9May 3, 199011.06−5.94Below flood stage16,500

Other gauges in Mason County

Flood gauges in Mason County
Mason18.037.00 ft, Sep 8, 19805

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

NOAA National Water Prediction Service, gauge MBCT2, 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.