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Waterloo Creek near Dorchester

Highest listed crest 15.05 ftFlood stage 10.0 ft31 crests since 1974

The Waterloo Creek near Dorchester crested at major flood stage 7 times among the 31 crests the National Weather Service lists from 1974 to 2026. The highest, 15.05 ft on July 2, 2026, was major flooding, 5.05 feet above flood stage.

The gauge

Highest listed crest
15.05 ft
July 2, 2026
Flood stage
10.0 ft
Major flooding from 12.0 ft
Crests at major
7
35th of 203 gauges in Iowa
Most recent flood crest
July 2, 2026
15.05 ft, major flooding
Location
Allamakee County
Iowa

Flood stages

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

Flood categories, Waterloo Creek near Dorchester
Action stage8.011Mar 9, 2006The level at which the NWS or its partners begin to take action
Flood stage (minor)10.08Apr 4, 2026Minimal or no property damage, but possibly some public threat
Moderate flood stage11.05Mar 14, 2019Some inundation of structures and roads near the stream
Major flood stage12.07Jul 2, 2026Extensive inundation of structures and roads

Every listed crest

31 crests from 1974 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Waterloo Creek near Dorchester, 1974 to 2026 810121416ft Flood stage 10.0 ftMajor 12.0 ft Jun 9, 1974: 10.85 ft, minor flooding; 2,500 cubic feet per secondApr 18, 1976: 9.34 ft, action stage; 1,150 cubic feet per secondJul 1, 1978: 14.80 ft, major flooding; 9,380 cubic feet per secondAug 17, 1980: 9.90 ft, action stage; 1,600 cubic feet per secondMar 13, 1982: 9.02 ft, action stage; 1,000 cubic feet per secondFeb 23, 1985: 9.08 ft, action stage; 1,050 cubic feet per secondSep 17, 1986: 10.32 ft, minor flooding; 1,900 cubic feet per secondOct 14, 1986: 10.15 ft, minor flooding; 1,800 cubic feet per secondMar 12, 1989: 9.55 ft, action stageJun 29, 1990: 9.12 ft, action stage; 1,020 cubic feet per secondApr 21, 1992: 10.13 ft, minor flooding; 1,730 cubic feet per secondJul 18, 1993: 10.00 ft, minor flooding; 1,630 cubic feet per secondFeb 19, 1994: 9.52 ft, action stage; 1,270 cubic feet per secondApr 11, 1995: 9.09 ft, action stage; 1,000 cubic feet per secondJun 28, 1998: 12.22 ft, major flooding; 4,160 cubic feet per secondAug 2, 2000: 9.57 ft, action stage; 1,300 cubic feet per secondJun 15, 2001: 9.13 ft, action stage; 1,020 cubic feet per secondMar 5, 2004: 11.04 ft, moderate flooding; 2,620 cubic feet per secondJun 26, 2005: 11.41 ft, moderate flooding; 3,050 cubic feet per secondMar 9, 2006: 9.15 ft, action stage; 1,030 cubic feet per secondAug 19, 2007: 11.50 ft, moderate flooding; 3,160 cubic feet per secondJun 8, 2008: 14.57 ft, major flooding; 8,800 cubic feet per secondJun 23, 2010: 12.08 ft, major flooding; 3,950 cubic feet per secondJun 19, 2011: 10.95 ft, minor flooding; 2,520 cubic feet per secondJun 19, 2012: 10.36 ft, minor flooding; 1,940 cubic feet per secondJun 23, 2013: 14.93 ft, major flooding; 9,720 cubic feet per secondMar 28, 2014: 11.33 ft, moderate floodingAug 24, 2016: 14.91 ft, major flooding; 9,630 cubic feet per secondMar 14, 2019: 11.89 ft, moderate floodingApr 4, 2026: 10.34 ft, minor floodingJul 2, 2026: 15.05 ft, major flooding Highest, 15.05 ft, Jul 2, 2026 19801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Waterloo Creek near Dorchester 1970s: 2 1980s: 2 1990s: 3 2000s: 4 2010s: 7 7 2020s: 2 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, Waterloo Creek near Dorchester
1Jul 2, 202615.05+5.05Major—
2Jun 23, 201314.93+4.93Major9,720
3Aug 24, 201614.91+4.91Major9,630
4Jul 1, 197814.80+4.80Major9,380
5Jun 8, 200814.57+4.57Major8,800
6Jun 28, 199812.22+2.22Major4,160
7Jun 23, 201012.08+2.08Major3,950
8Mar 14, 201911.89+1.89Moderate—
9Aug 19, 200711.50+1.50Moderate3,160
10Jun 26, 200511.41+1.41Moderate3,050
11Mar 28, 201411.33+1.33Moderate—
12Mar 5, 200411.04+1.04Moderate2,620
13Jun 19, 201110.95+0.95Minor2,520
14Jun 9, 197410.85+0.85Minor2,500
15Jun 19, 201210.36+0.36Minor1,940
16Apr 4, 202610.34+0.34Minor—
17Sep 17, 198610.32+0.32Minor1,900
18Oct 14, 198610.15+0.15Minor1,800
19Apr 21, 199210.13+0.13Minor1,730
20Jul 18, 199310.000.00Minor1,630
21Aug 17, 19809.90−0.10Action1,600
22Aug 2, 20009.57−0.43Action1,300
23Mar 12, 19899.55−0.45Action—
24Feb 19, 19949.52−0.48Action1,270
25Apr 18, 19769.34−0.66Action1,150
26Mar 9, 20069.15−0.85Action1,030
27Jun 15, 20019.13−0.87Action1,020
28Jun 29, 19909.12−0.88Action1,020
29Apr 11, 19959.09−0.91Action1,000
30Feb 23, 19859.08−0.92Action1,050
31Mar 13, 19829.02−0.98Action1,000

Other gauges in Allamakee County

Flood gauges in Allamakee County
Lansing - Pool 917.022.50 ft, Apr 24, 19651
Dorchester14.024.30 ft, Aug 25, 20169
Ion13.017.11 ft, Feb 10, 20091

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

NOAA National Water Prediction Service, gauge DWCI4, 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.