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Sweetwater River near Sweetwater Station

Highest listed crest 12.40 ftFlood stage 7.0 ft28 crests since 1974

The Sweetwater River near Sweetwater Station crested at major flood stage 3 times among the 28 crests the National Weather Service lists from 1974 to 2021. The highest, 12.40 ft on April 24, 1980, was major flooding, 5.40 feet above flood stage.

The gauge

Highest listed crest
12.40 ft
April 24, 1980; 5,750 cubic feet per second
Flood stage
7.0 ft
Major flooding from 9.0 ft
Crests at major
3
1st of 73 gauges in Wyoming
Most recent flood crest
June 8, 2017
7.38 ft, minor flooding
Location
Fremont County
Wyoming

Flood stages

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

Flood categories, Sweetwater River near Sweetwater Station
Action stage6.03May 9, 2016The level at which the NWS or its partners begin to take action
Flood stage (minor)7.03Jun 8, 2017Minimal or no property damage, but possibly some public threat
Moderate flood stage8.01Jun 3, 1986Some inundation of structures and roads near the stream
Major flood stage9.03Apr 25, 1983Extensive inundation of structures and roads

Every listed crest

28 crests from 1974 to 2021. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Sweetwater River near Sweetwater Station, 1974 to 2021 2468101214ft Flood stage 7.0 ftMajor 9.0 ft Apr 27, 1974: 9.78 ft, major flooding; 2,950 cubic feet per secondMay 21, 1975: 5.95 ft, below flood stage; 980 cubic feet per secondMay 24, 1976: 5.80 ft, below flood stage; 922 cubic feet per secondApr 9, 1977: 6.31 ft, action stage; 1,090 cubic feet per secondJun 12, 1978: 5.85 ft, below flood stage; 950 cubic feet per secondMay 31, 1979: 5.73 ft, below flood stage; 908 cubic feet per secondApr 24, 1980: 12.40 ft, major flooding; 5,750 cubic feet per secondJun 8, 1981: 3.81 ft, below flood stage; 490 cubic feet per secondMay 5, 1982: 5.53 ft, below flood stage; 882 cubic feet per secondApr 25, 1983: 11.54 ft, major flooding; 4,550 cubic feet per secondMay 15, 1984: 7.93 ft, minor flooding; 1,740 cubic feet per secondApr 17, 1985: 4.76 ft, below flood stage; 689 cubic feet per secondJun 3, 1986: 8.25 ft, moderate flooding; 1,900 cubic feet per secondApr 18, 1987: 6.13 ft, action stage; 1,040 cubic feet per secondApr 8, 1988: 4.62 ft, below flood stage; 650 cubic feet per secondApr 10, 1989: 3.87 ft, below flood stage; 504 cubic feet per secondJun 13, 1990: 3.93 ft, below flood stage; 516 cubic feet per secondJun 5, 1991: 5.90 ft, below flood stage; 975 cubic feet per secondApr 5, 1992: 2.71 ft, below flood stage; 231 cubic feet per secondMay 25, 2015: 4.77 ft, below flood stage; 602 cubic feet per secondMay 9, 2016: 6.97 ft, action stage; 1,400 cubic feet per secondJun 7, 2016: 5.13 ft, below flood stage; 691 cubic feet per secondMay 15, 2017: 7.36 ft, minor flooding; 1,550 cubic feet per secondJun 8, 2017: 7.38 ft, minor flooding; 1,580 cubic feet per secondMay 29, 2018: 4.35 ft, below flood stage; 600 cubic feet per secondJun 10, 2019: 4.71 ft, below flood stage; 695 cubic feet per secondJun 9, 2020: 3.65 ft, below flood stage; 415 cubic feet per secondJun 4, 2021: 3.32 ft, below flood stage; 326 cubic feet per second Highest, 12.40 ft, Apr 24, 1980 19801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Sweetwater River near Sweetwater Station 1970s: 1 1980s: 4 4 1990s: 0 2000s: 0 2010s: 2 2020s: 0 1970s1980s1990s2000s2010s2020s
  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, Sweetwater River near Sweetwater Station
1Apr 24, 198012.40+5.40Major5,750
2Apr 25, 198311.54+4.54Major4,550
3Apr 27, 19749.78+2.78Major2,950
4Jun 3, 19868.25+1.25Moderate1,900
5May 15, 19847.93+0.93Minor1,740
6Jun 8, 20177.38+0.38Minor1,580
7May 15, 20177.36+0.36Minor1,550
8May 9, 20166.97−0.03Action1,400
9Apr 9, 19776.31−0.69Action1,090
10Apr 18, 19876.13−0.87Action1,040
11May 21, 19755.95−1.05Below flood stage980
12Jun 5, 19915.90−1.10Below flood stage975
13Jun 12, 19785.85−1.15Below flood stage950
14May 24, 19765.80−1.20Below flood stage922
15May 31, 19795.73−1.27Below flood stage908
16May 5, 19825.53−1.47Below flood stage882
17Jun 7, 20165.13−1.87Below flood stage691
18May 25, 20154.77−2.23Below flood stage602
19Apr 17, 19854.76−2.24Below flood stage689
20Jun 10, 20194.71−2.29Below flood stage695
21Apr 8, 19884.62−2.38Below flood stage650
22May 29, 20184.35−2.65Below flood stage600
23Jun 13, 19903.93−3.07Below flood stage516
24Apr 10, 19893.87−3.13Below flood stage504
25Jun 8, 19813.81−3.19Below flood stage490
26Jun 9, 20203.65−3.35Below flood stage415
27Jun 4, 20213.32−3.68Below flood stage326
28Apr 5, 19922.71−4.29Below flood stage231

Other gauges in Fremont County

Flood gauges in Fremont County
Lander5.56.42 ft, Jun 11, 19650
Fort Washakie4.55.11 ft, Jun 18, 20170
Riverton8.011.91 ft, Jun 9, 20101
Sinks Canyon6.57.69 ft, Jun 16, 19630
Fort Washakie6.07.19 ft, Jun 17, 19990
Gallinger Ranch5.05.93 ft, Jun 17, 20170
Boysen Reservoir near Shoshoni8.59.31 ft, Jun 14, 19910
Red Creek9.59.97 ft, Jun 9, 19970
Riverton9.012.06 ft, Jun 10, 20171
Below Diversion Dam at Highway 26 Bridge6.07.45 ft, Jun 1, 20200
Crowheart10.011.23 ft, Jun 19, 19992
Dubois5.05.80 ft, Jun 18, 20180
Kinnear9.09.92 ft, Jul 1, 20110

Fremont County: every hazard · River floods across the country · Wyoming

NOAA National Water Prediction Service, gauge SWSW4, 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.