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San Gabriel River at Georgetown South Fork

Highest listed crest 41.00 ftFlood stage 9.0 ft17 crests since 1956

The San Gabriel River at Georgetown South Fork crested at major flood stage 4 times among the 17 crests the National Weather Service lists from 1956 to 2025. The highest, 41.00 ft on April 24, 1956, was major flooding, 32.00 feet above flood stage.

The gauge

Highest listed crest
41.00 ft
April 24, 1956
Flood stage
9.0 ft
Major flooding from 26.0 ft
Crests at major
4
157th of 370 gauges in Texas
Most recent flood crest
July 5, 2025
37.36 ft, major flooding
Location
Williamson County
Near Georgetown (3.0 mi), Round Rock (7.1 mi), Hutto (10.6 mi)

Flood stages

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

Flood categories, San Gabriel River at Georgetown South Fork
Action stage7.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)9.04May 8, 2019Minimal or no property damage, but possibly some public threat
Moderate flood stage13.08Oct 16, 2018Some inundation of structures and roads near the stream
Major flood stage26.04Jul 5, 2025Extensive inundation of structures and roads

Every listed crest

17 crests from 1956 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the San Gabriel River at Georgetown South Fork, 1956 to 2025 01020304050ft Flood stage 9.0 ftMajor 26.0 ft Apr 24, 1956: 41.00 ft, major floodingSep 3, 1981: 24.60 ft, moderate flooding; 33,400 cubic feet per secondFeb 3, 1986: 19.94 ft, moderate floodingJun 9, 1997: 12.28 ft, minor flooding; 9,150 cubic feet per secondOct 17, 1998: 16.65 ft, moderate flooding; 17,500 cubic feet per secondNov 15, 2001: 27.06 ft, major floodingNov 17, 2004: 15.53 ft, moderate flooding; 13,251 cubic feet per secondJun 27, 2007: 31.65 ft, major flooding; 93,783 cubic feet per secondSep 8, 2010: 21.98 ft, moderate flooding; 24,500 cubic feet per secondMar 20, 2012: 10.06 ft, minor flooding; 4,690 cubic feet per secondMay 24, 2015: 17.12 ft, moderate flooding; 14,700 cubic feet per secondOct 31, 2015: 11.28 ft, minor flooding; 3,060 cubic feet per secondSep 22, 2018: 23.93 ft, moderate flooding; 29,300 cubic feet per secondOct 16, 2018: 16.88 ft, moderate flooding; 14,200 cubic feet per secondMay 8, 2019: 9.29 ft, minor flooding; 3,927 cubic feet per secondMay 7, 2025: 6.78 ft, below flood stage; 1,839 cubic feet per secondJul 5, 2025: 37.36 ft, major flooding Highest, 41.00 ft, Apr 24, 1956 1960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, San Gabriel River at Georgetown South Fork 1950s: 1 1960s: 0 1970s: 0 1980s: 2 1990s: 2 2000s: 3 2010s: 7 7 2020s: 1 1950s1960s1970s1980s1990s2000s2010s2020s
  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, San Gabriel River at Georgetown South Fork
1Apr 24, 195641.00+32.00Major—
2Jul 5, 202537.36+28.36Major—
3Jun 27, 200731.65+22.65Major93,783
4Nov 15, 200127.06+18.06Major—
5Sep 3, 198124.60+15.60Moderate33,400
6Sep 22, 201823.93+14.93Moderate29,300
7Sep 8, 201021.98+12.98Moderate24,500
8Feb 3, 198619.94+10.94Moderate—
9May 24, 201517.12+8.12Moderate14,700
10Oct 16, 201816.88+7.88Moderate14,200
11Oct 17, 199816.65+7.65Moderate17,500
12Nov 17, 200415.53+6.53Moderate13,251
13Jun 9, 199712.28+3.28Minor9,150
14Oct 31, 201511.28+2.28Minor3,060
15Mar 20, 201210.06+1.06Minor4,690
16May 8, 20199.29+0.29Minor3,927
17May 7, 20256.78−2.22Below flood stage1,839

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

NOAA National Water Prediction Service, gauge GETT2, 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.