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Middle Fork Popo Agie River at Sinks Canyon

Highest listed crest 7.69 ftFlood stage 6.5 ft58 crests since 1960

The Middle Fork Popo Agie River at Sinks Canyon crested above flood stage 7 times among the 58 crests the National Weather Service lists from 1960 to 2025. The highest, 7.69 ft on June 16, 1963, was moderate flooding, 1.19 feet above flood stage.

The gauge

Highest listed crest
7.69 ft
June 16, 1963; 4,180 cubic feet per second
Flood stage
6.5 ft
Major flooding from 8.0 ft
Crests at major
0
7 above flood stage
Most recent flood crest
June 12, 2022
6.55 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, Middle Fork Popo Agie River at Sinks Canyon
Action stage5.519Jun 7, 2024The level at which the NWS or its partners begin to take action
Flood stage (minor)6.55Jun 12, 2022Minimal or no property damage, but possibly some public threat
Moderate flood stage7.52Jun 7, 2010Some inundation of structures and roads near the stream
Major flood stage8.00—Extensive inundation of structures and roads

Every listed crest

58 crests from 1960 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Middle Fork Popo Agie River at Sinks Canyon, 1960 to 2025 45678ft Flood stage 6.5 ftMajor 8.0 ft Jun 4, 1960: 4.16 ft, below flood stage; 622 cubic feet per secondMay 30, 1961: 4.68 ft, below flood stage; 1,010 cubic feet per secondJun 21, 1962: 4.98 ft, below flood stage; 958 cubic feet per secondJun 16, 1963: 7.69 ft, moderate flooding; 4,180 cubic feet per secondJun 7, 1964: 5.45 ft, below flood stage; 1,320 cubic feet per secondJun 10, 1965: 6.40 ft, action stage; 2,250 cubic feet per secondMay 29, 1966: 4.26 ft, below flood stage; 470 cubic feet per secondJun 23, 1967: 6.10 ft, action stage; 1,900 cubic feet per secondJun 6, 1968: 5.53 ft, action stage; 1,330 cubic feet per secondJun 8, 1969: 5.76 ft, action stage; 1,540 cubic feet per secondJun 10, 1970: 4.93 ft, below flood stage; 871 cubic feet per secondJun 5, 1971: 6.48 ft, action stage; 2,350 cubic feet per secondJun 7, 1972: 5.67 ft, action stage; 1,450 cubic feet per secondJun 11, 1973: 5.55 ft, action stage; 1,340 cubic feet per secondMay 29, 1974: 5.51 ft, action stage; 1,310 cubic feet per secondJul 4, 1975: 5.21 ft, below flood stage; 1,070 cubic feet per secondJun 4, 1976: 4.82 ft, below flood stage; 794 cubic feet per secondJun 3, 1977: 4.33 ft, below flood stage; 505 cubic feet per secondJun 16, 1978: 5.64 ft, action stage; 1,430 cubic feet per secondMay 29, 1979: 5.18 ft, below flood stage; 1,040 cubic feet per secondJun 12, 1980: 5.48 ft, below flood stage; 1,270 cubic feet per secondMay 27, 1992: 4.12 ft, below flood stage; 408 cubic feet per secondMay 27, 1993: 5.03 ft, below flood stage; 941 cubic feet per secondMay 28, 1994: 4.58 ft, below flood stage; 708 cubic feet per secondJun 15, 1995: 6.55 ft, minor flooding; 2,400 cubic feet per secondJun 11, 1996: 5.56 ft, action stage; 1,350 cubic feet per secondJun 9, 1997: 5.81 ft, action stage; 1,590 cubic feet per secondJun 26, 1998: 5.42 ft, below flood stage; 1,240 cubic feet per secondJun 21, 1999: 5.94 ft, action stage; 1,720 cubic feet per secondMay 29, 2000: 5.04 ft, below flood stage; 950 cubic feet per secondMay 16, 2001: 5.25 ft, below flood stage; 1,160 cubic feet per secondJun 7, 2002: 4.71 ft, below flood stage; 1,150 cubic feet per secondMay 29, 2003: 5.10 ft, below flood stage; 1,760 cubic feet per secondJun 27, 2004: 5.21 ft, below flood stage; 1,980 cubic feet per secondJun 21, 2005: 5.51 ft, action stage; 1,570 cubic feet per secondMay 23, 2006: 4.68 ft, below flood stage; 775 cubic feet per secondMay 15, 2007: 4.49 ft, below flood stage; 648 cubic feet per secondJun 19, 2008: 5.21 ft, below flood stage; 1,230 cubic feet per secondJun 21, 2009: 5.28 ft, below flood stage; 1,884 cubic feet per secondJun 7, 2010: 7.50 ft, moderate flooding; 3,895 cubic feet per secondJun 26, 2010: 5.21 ft, below flood stage; 1,341 cubic feet per secondJul 1, 2011: 5.91 ft, action stage; 1,991 cubic feet per secondJun 4, 2012: 4.10 ft, below flood stage; 663 cubic feet per secondJun 11, 2013: 4.21 ft, below flood stage; 755 cubic feet per secondMay 28, 2014: 4.88 ft, below flood stage; 1,157 cubic feet per secondJun 3, 2015: 5.09 ft, below flood stage; 1,519 cubic feet per secondJun 10, 2016: 6.14 ft, action stage; 2,916 cubic feet per secondJun 17, 2017: 6.94 ft, minor flooding; 4,210 cubic feet per secondJun 22, 2017: 6.85 ft, minor flooding; 3,925 cubic feet per secondJun 1, 2018: 5.20 ft, below flood stage; 1,345 cubic feet per secondJun 18, 2018: 5.39 ft, below flood stage; 1,540 cubic feet per secondJun 8, 2019: 6.58 ft, minor flooding; 3,775 cubic feet per secondJun 7, 2020: 5.75 ft, action stage; 2,240 cubic feet per secondJun 6, 2021: 5.66 ft, action stage; 1,950 cubic feet per secondJun 12, 2022: 6.55 ft, minor flooding; 3,550 cubic feet per secondJun 21, 2023: 5.77 ft, action stage; 2,350 cubic feet per secondJun 7, 2024: 5.90 ft, action stage; 2,550 cubic feet per secondJun 1, 2025: 5.20 ft, below flood stage; 1,620 cubic feet per second Highest, 7.69 ft, Jun 16, 1963 1960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Middle Fork Popo Agie River at Sinks Canyon 1960s: 1 1970s: 0 1980s: 0 1990s: 1 2000s: 0 2010s: 4 4 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

The 50 highest of 58 listed crests.

Highest listed crests, Middle Fork Popo Agie River at Sinks Canyon
1Jun 16, 19637.69+1.19Moderate4,180
2Jun 7, 20107.50+1.00Moderate3,895
3Jun 17, 20176.94+0.44Minor4,210
4Jun 22, 20176.85+0.35Minor3,925
5Jun 8, 20196.58+0.08Minor3,775
6Jun 15, 19956.55+0.05Minor2,400
7Jun 12, 20226.55+0.05Minor3,550
8Jun 5, 19716.48−0.02Action2,350
9Jun 10, 19656.40−0.10Action2,250
10Jun 10, 20166.14−0.36Action2,916
11Jun 23, 19676.10−0.40Action1,900
12Jun 21, 19995.94−0.56Action1,720
13Jul 1, 20115.91−0.59Action1,991
14Jun 7, 20245.90−0.60Action2,550
15Jun 9, 19975.81−0.69Action1,590
16Jun 21, 20235.77−0.73Action2,350
17Jun 8, 19695.76−0.74Action1,540
18Jun 7, 20205.75−0.75Action2,240
19Jun 7, 19725.67−0.83Action1,450
20Jun 6, 20215.66−0.84Action1,950
21Jun 16, 19785.64−0.86Action1,430
22Jun 11, 19965.56−0.94Action1,350
23Jun 11, 19735.55−0.95Action1,340
24Jun 6, 19685.53−0.97Action1,330
25May 29, 19745.51−0.99Action1,310
26Jun 21, 20055.51−0.99Action1,570
27Jun 12, 19805.48−1.02Below flood stage1,270
28Jun 7, 19645.45−1.05Below flood stage1,320
29Jun 26, 19985.42−1.08Below flood stage1,240
30Jun 18, 20185.39−1.11Below flood stage1,540
31Jun 21, 20095.28−1.22Below flood stage1,884
32May 16, 20015.25−1.25Below flood stage1,160
33Jul 4, 19755.21−1.29Below flood stage1,070
34Jun 27, 20045.21−1.29Below flood stage1,980
35Jun 19, 20085.21−1.29Below flood stage1,230
36Jun 26, 20105.21−1.29Below flood stage1,341
37Jun 1, 20185.20−1.30Below flood stage1,345
38Jun 1, 20255.20−1.30Below flood stage1,620
39May 29, 19795.18−1.32Below flood stage1,040
40May 29, 20035.10−1.40Below flood stage1,760
41Jun 3, 20155.09−1.41Below flood stage1,519
42May 29, 20005.04−1.46Below flood stage950
43May 27, 19935.03−1.47Below flood stage941
44Jun 21, 19624.98−1.52Below flood stage958
45Jun 10, 19704.93−1.57Below flood stage871
46May 28, 20144.88−1.62Below flood stage1,157
47Jun 4, 19764.82−1.68Below flood stage794
48Jun 7, 20024.71−1.79Below flood stage1,150
49May 30, 19614.68−1.82Below flood stage1,010
50May 23, 20064.68−1.82Below flood stage775

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
Fort Washakie6.07.19 ft, Jun 17, 19990
Gallinger Ranch5.05.93 ft, Jun 17, 20170
Sweetwater Station7.012.40 ft, Apr 24, 19803
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 LANW4, 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.