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Floyd River near Struble

Highest listed crest 18.47 ftFlood stage 14.0 ft64 crests since 1956

The Floyd River near Struble crested at major flood stage 1 time among the 64 crests the National Weather Service lists from 1956 to 2025. The highest, 18.47 ft on June 22, 2024, was major flooding, 4.47 feet above flood stage. 5 other gauges on the Floyd River crested above flood stage within a week of it, 4 at their own highest listed crest.

The gauge

Highest listed crest
18.47 ft
June 22, 2024
Flood stage
14.0 ft
Major flooding from 18.0 ft
Crests at major
1
93rd of 203 gauges in Iowa
Most recent flood crest
July 30, 2025
14.10 ft, minor flooding
Location
Sioux County
Near Le Mars (9.8 mi)

Flood stages

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

Flood categories, Floyd River near Struble
Action stage12.09Feb 17, 2011The level at which the NWS or its partners begin to take action
Flood stage (minor)14.016Jul 30, 2025Minimal or no property damage, but possibly some public threat
Moderate flood stage15.012Mar 14, 2019Some inundation of structures and roads near the stream
Major flood stage18.01Jun 22, 2024Extensive inundation of structures and roads

Every listed crest

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

Listed crests at the Floyd River near Struble, 1956 to 2025 05101520ft Flood stage 14.0 ftMajor 18.0 ft Jul 12, 1956: 9.22 ft, below flood stage; 463 cubic feet per secondJul 4, 1957: 11.32 ft, below flood stage; 840 cubic feet per secondApr 6, 1958: 7.34 ft, below flood stage; 218 cubic feet per secondMay 31, 1959: 10.27 ft, below flood stage; 646 cubic feet per secondMar 29, 1960: 14.72 ft, minor flooding; 3,880 cubic feet per secondAug 22, 1961: 8.55 ft, below flood stage; 501 cubic feet per secondMar 28, 1962: 15.63 ft, moderate flooding; 8,060 cubic feet per secondJul 30, 1963: 9.03 ft, below flood stage; 700 cubic feet per secondSep 8, 1964: 7.14 ft, below flood stageApr 1, 1965: 14.49 ft, minor flooding; 2,800 cubic feet per secondFeb 9, 1966: 15.27 ft, moderate flooding; 4,120 cubic feet per secondJun 12, 1967: 11.42 ft, below flood stage; 1,350 cubic feet per secondJul 20, 1968: 12.14 ft, action stage; 1,580 cubic feet per secondApr 4, 1969: 14.90 ft, minor flooding; 4,380 cubic feet per secondMay 28, 1970: 14.61 ft, minor flooding; 3,450 cubic feet per secondFeb 19, 1971: 15.50 ft, moderate flooding; 7,500 cubic feet per secondJun 8, 1972: 14.06 ft, minor flooding; 2,860 cubic feet per secondMar 3, 1973: 14.30 ft, minor flooding; 3,100 cubic feet per secondJun 24, 1974: 15.03 ft, moderate flooding; 4,870 cubic feet per secondJun 4, 1975: 13.58 ft, action stage; 2,430 cubic feet per secondMay 21, 1976: 14.38 ft, minor flooding; 3,180 cubic feet per secondMay 27, 1977: 7.73 ft, below flood stage; 273 cubic feet per secondJul 6, 1978: 14.42 ft, minor flooding; 3,220 cubic feet per secondMar 22, 1979: 15.39 ft, moderate flooding; 6,880 cubic feet per secondMay 30, 1980: 13.40 ft, action stage; 2,390 cubic feet per secondJun 14, 1981: 11.10 ft, below flood stage; 1,310 cubic feet per secondFeb 23, 1982: 14.63 ft, minor flooding; 2,830 cubic feet per secondJun 20, 1983: 15.86 ft, moderate flooding; 7,590 cubic feet per secondJun 20, 1984: 14.37 ft, minor flooding; 4,610 cubic feet per secondApr 22, 1985: 14.29 ft, minor flooding; 4,450 cubic feet per secondMar 18, 1986: 13.89 ft, action stage; 3,780 cubic feet per secondMar 24, 1987: 7.27 ft, below flood stage; 422 cubic feet per secondAug 22, 1988: 13.52 ft, action stage; 3,240 cubic feet per secondMar 9, 1989: 9.87 ft, below flood stageJun 17, 1990: 14.57 ft, minor flooding; 3,490 cubic feet per secondFeb 7, 1991: 5.86 ft, below flood stageJul 10, 1992: 9.99 ft, below flood stage; 1,060 cubic feet per secondMar 26, 1993: 14.23 ft, minor flooding; 3,470 cubic feet per secondMar 4, 1994: 15.86 ft, moderate flooding; 8,920 cubic feet per secondMar 31, 1996: 9.03 ft, below flood stage; 796 cubic feet per secondMar 12, 1997: 13.88 ft, action stage; 3,110 cubic feet per secondJul 6, 1998: 9.96 ft, below flood stage; 1,060 cubic feet per secondJul 21, 1999: 13.25 ft, action stage; 2,620 cubic feet per secondMay 18, 2000: 12.39 ft, action stage; 2,060 cubic feet per secondAug 4, 2001: 11.10 ft, below flood stage; 1,450 cubic feet per secondJul 9, 2003: 9.98 ft, below flood stage; 1,060 cubic feet per secondMay 23, 2004: 10.71 ft, below flood stage; 1,300 cubic feet per secondJun 17, 2006: 6.81 ft, below flood stage; 382 cubic feet per secondMar 13, 2007: 14.79 ft, minor flooding; 4,410 cubic feet per secondMar 13, 2008: 9.12 ft, below flood stage; 817 cubic feet per secondFeb 10, 2009: 15.16 ft, moderate flooding; 5,400 cubic feet per secondJul 30, 2010: 15.86 ft, moderate flooding; 8,920 cubic feet per secondFeb 17, 2011: 12.55 ft, action stage; 2,150 cubic feet per secondMay 27, 2013: 15.77 ft, moderate flooding; 8,280 cubic feet per secondJun 16, 2014: 14.11 ft, minor flooding; 3,330 cubic feet per secondFeb 21, 2016: 9.88 ft, below flood stage; 1,030 cubic feet per secondFeb 12, 2017: 9.66 ft, below flood stage; 966 cubic feet per secondSep 21, 2018: 16.24 ft, moderate floodingMar 14, 2019: 16.41 ft, moderate floodingOct 2, 2019: 9.16 ft, below flood stage; 656 cubic feet per secondApr 1, 2020: 6.14 ft, below flood stageAug 6, 2023: 10.66 ft, below flood stageJun 22, 2024: 18.47 ft, major floodingJul 30, 2025: 14.10 ft, minor flooding Highest, 18.47 ft, Jun 22, 2024 1960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Floyd River near Struble 1950s: 0 1960s: 5 1970s: 8 8 1980s: 4 1990s: 3 2000s: 2 2010s: 5 2020s: 2 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

The 50 highest of 64 listed crests.

Highest listed crests, Floyd River near Struble
1Jun 22, 202418.47+4.47Major—
2Mar 14, 201916.41+2.41Moderate—
3Sep 21, 201816.24+2.24Moderate—
4Jun 20, 198315.86+1.86Moderate7,590
5Mar 4, 199415.86+1.86Moderate8,920
6Jul 30, 201015.86+1.86Moderate8,920
7May 27, 201315.77+1.77Moderate8,280
8Mar 28, 196215.63+1.63Moderate8,060
9Feb 19, 197115.50+1.50Moderate7,500
10Mar 22, 197915.39+1.39Moderate6,880
11Feb 9, 196615.27+1.27Moderate4,120
12Feb 10, 200915.16+1.16Moderate5,400
13Jun 24, 197415.03+1.03Moderate4,870
14Apr 4, 196914.90+0.90Minor4,380
15Mar 13, 200714.79+0.79Minor4,410
16Mar 29, 196014.72+0.72Minor3,880
17Feb 23, 198214.63+0.63Minor2,830
18May 28, 197014.61+0.61Minor3,450
19Jun 17, 199014.57+0.57Minor3,490
20Apr 1, 196514.49+0.49Minor2,800
21Jul 6, 197814.42+0.42Minor3,220
22May 21, 197614.38+0.38Minor3,180
23Jun 20, 198414.37+0.37Minor4,610
24Mar 3, 197314.30+0.30Minor3,100
25Apr 22, 198514.29+0.29Minor4,450
26Mar 26, 199314.23+0.23Minor3,470
27Jun 16, 201414.11+0.11Minor3,330
28Jul 30, 202514.10+0.10Minor—
29Jun 8, 197214.06+0.06Minor2,860
30Mar 18, 198613.89−0.11Action3,780
31Mar 12, 199713.88−0.12Action3,110
32Jun 4, 197513.58−0.42Action2,430
33Aug 22, 198813.52−0.48Action3,240
34May 30, 198013.40−0.60Action2,390
35Jul 21, 199913.25−0.75Action2,620
36Feb 17, 201112.55−1.45Action2,150
37May 18, 200012.39−1.61Action2,060
38Jul 20, 196812.14−1.86Action1,580
39Jun 12, 196711.42−2.58Below flood stage1,350
40Jul 4, 195711.32−2.68Below flood stage840
41Jun 14, 198111.10−2.90Below flood stage1,310
42Aug 4, 200111.10−2.90Below flood stage1,450
43May 23, 200410.71−3.29Below flood stage1,300
44Aug 6, 202310.66−3.34Below flood stage—
45May 31, 195910.27−3.73Below flood stage646
46Jul 10, 19929.99−4.01Below flood stage1,060
47Jul 9, 20039.98−4.02Below flood stage1,060
48Jul 6, 19989.96−4.04Below flood stage1,060
49Feb 21, 20169.88−4.12Below flood stage1,030
50Mar 9, 19899.87−4.13Below flood stage—

The worst floods along the Floyd River

For this gauge's highest crests, the other gauges on the Floyd River that crested above flood stage within a week.

June 22, 2024: 18.47 ft here, major flooding

  • Le MarsIA · Jun 23, 2024 · 27.97 ft · Major · its highest
  • AltonIA · Jun 22, 2024 · 26.81 ft · Major · its highest
  • MerrillIA · Jun 23, 2024 · 20.19 ft · Major · its highest
  • JamesIA · Jun 23, 2024 · 32.39 ft · Moderate · its highest
  • SheldonIA · Jun 22, 2024 · 17.62 ft · Moderate

March 14, 2019: 16.41 ft here, moderate flooding

  • MerrillIA · Mar 15, 2019 · 17.60 ft · Major
  • JamesIA · Mar 15, 2019 · 31.48 ft · Moderate
  • Le MarsIA · Mar 14, 2019 · 25.84 ft · Moderate
  • AltonIA · Mar 14, 2019 · 20.87 ft · Moderate
  • SheldonIA · Mar 14, 2019 · 13.70 ft · Minor

September 21, 2018: 16.24 ft here, moderate flooding

  • Le MarsIA · Sep 21, 2018 · 26.40 ft · Major
  • MerrillIA · Sep 21, 2018 · 17.00 ft · Major
  • AltonIA · Sep 20, 2018 · 21.96 ft · Moderate
  • JamesIA · Sep 22, 2018 · 27.70 ft · Minor

Gauges on the Floyd River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Floyd River
AltonIA12.026.81 ft, Jun 22, 20241
JamesIA26.032.39 ft, Jun 23, 20240
Le MarsIA20.027.97 ft, Jun 23, 20243
MerrillIA12.020.19 ft, Jun 23, 202413
SheldonIA12.019.96 ft, Jun 7, 19531
Struble this gaugeIA14.018.47 ft, Jun 22, 20241

Other gauges in Sioux County

Flood gauges in Sioux County
Perkins16.023.06 ft, Jun 22, 20241
Alton12.026.81 ft, Jun 22, 20241
Rock Valley16.027.70 ft, Jun 22, 20246

Sioux County: every hazard · River floods across the country · Iowa

NOAA National Water Prediction Service, gauge STUI4, 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.