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near Gunlock

Highest listed crest 14.20 ftFlood stage 5.8 ft18 crests since 1974

The near Gunlock crested at major flood stage 3 times among the 18 crests the National Weather Service lists from 1974 to 2007. The highest, 14.20 ft on August 1, 2007, was major flooding, 8.40 feet above flood stage.

The gauge

Highest listed crest
14.20 ft
August 1, 2007; 8,840 cubic feet per second
Flood stage
5.8 ft
Major flooding from 6.5 ft
Crests at major
3
5th of 40 gauges in Utah
Most recent flood crest
August 1, 2007
14.20 ft, major flooding
Location
Washington County
Near Ivins (8.9 mi)

Flood stages

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

Flood categories, near Gunlock
Action stage4.94Feb 24, 1998The level at which the NWS or its partners begin to take action
Flood stage (minor)5.80—Minimal or no property damage, but possibly some public threat
Moderate flood stage6.21Sep 9, 2004Some inundation of structures and roads near the stream
Major flood stage6.53Aug 1, 2007Extensive inundation of structures and roads

Every listed crest

18 crests from 1974 to 2007. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the near Gunlock, 1974 to 2007 05101520ft Flood stage 5.8 ftMajor 6.5 ft Aug 15, 1974: 4.07 ft, below flood stage; 1,360 cubic feet per secondFeb 14, 1980: 5.74 ft, action stage; 2,810 cubic feet per secondMar 3, 1983: 5.71 ft, action stage; 1,560 cubic feet per secondAug 15, 1990: 3.80 ft, below flood stage; 174 cubic feet per secondSep 7, 1991: 4.74 ft, below flood stage; 370 cubic feet per secondFeb 13, 1992: 4.50 ft, below flood stage; 496 cubic feet per secondJan 18, 1993: 5.58 ft, action stage; 959 cubic feet per secondFeb 18, 1994: 3.60 ft, below flood stage; 134 cubic feet per secondNov 1, 1995: 2.24 ft, below flood stage; 59 cubic feet per secondSep 3, 1997: 7.47 ft, major flooding; 2,030 cubic feet per secondFeb 24, 1998: 5.33 ft, action stage; 889 cubic feet per secondAug 7, 1999: 3.79 ft, below flood stage; 118 cubic feet per secondOct 30, 2000: 4.02 ft, below flood stage; 200 cubic feet per secondSep 8, 2002: 3.93 ft, below flood stage; 154 cubic feet per secondMay 17, 2003: 3.71 ft, below flood stage; 65 cubic feet per secondSep 9, 2004: 6.37 ft, moderate flooding; 1,520 cubic feet per secondJan 10, 2005: 10.20 ft, major flooding; 5,200 cubic feet per secondAug 1, 2007: 14.20 ft, major flooding; 8,840 cubic feet per second Highest, 14.20 ft, Aug 1, 2007 198019902000

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, near Gunlock 1970s: 0 1980s: 0 1990s: 1 2000s: 3 3 1970s1980s1990s2000s
  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, near Gunlock
1Aug 1, 200714.20+8.40Major8,840
2Jan 10, 200510.20+4.40Major5,200
3Sep 3, 19977.47+1.67Major2,030
4Sep 9, 20046.37+0.57Moderate1,520
5Feb 14, 19805.74−0.06Action2,810
6Mar 3, 19835.71−0.09Action1,560
7Jan 18, 19935.58−0.22Action959
8Feb 24, 19985.33−0.47Action889
9Sep 7, 19914.74−1.06Below flood stage370
10Feb 13, 19924.50−1.30Below flood stage496
11Aug 15, 19744.07−1.73Below flood stage1,360
12Oct 30, 20004.02−1.78Below flood stage200
13Sep 8, 20023.93−1.87Below flood stage154
14Aug 15, 19903.80−2.00Below flood stage174
15Aug 7, 19993.79−2.01Below flood stage118
16May 17, 20033.71−2.09Below flood stage65
17Feb 18, 19943.60−2.20Below flood stage134
18Nov 1, 19952.24−3.56Below flood stage59

Other gauges in Washington County

Flood gauges in Washington County
St. George13.915.00 ft, Jan 12, 20051
Bloomington16.030.00 ft, Jan 1, 19899
Virgin18.919.60 ft, Dec 22, 20100

Washington County: every hazard · River floods across the country · Utah

NOAA National Water Prediction Service, gauge SCGU1, 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.