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Thompson River (IA/MO) near Trenton

Highest listed crest 34.38 ftFlood stage 27.0 ft16 crests since 2007

The Thompson River (IA/MO) near Trenton crested at major flood stage 1 time among the 16 crests the National Weather Service lists from 2007 to 2026. The highest, 34.38 ft on May 29, 2019, was major flooding, 7.38 feet above flood stage.

The gauge

Highest listed crest
34.38 ft
May 29, 2019
Flood stage
27.0 ft
Major flooding from 34.0 ft
Crests at major
1
94th of 173 gauges in Missouri
Most recent flood crest
June 11, 2026
29.71 ft, minor flooding
Location
Grundy County
Missouri

Flood stages

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

Flood categories, Thompson River (IA/MO) near Trenton
Action stage24.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)27.09Jun 11, 2026Minimal or no property damage, but possibly some public threat
Moderate flood stage31.06Sep 10, 2014Some inundation of structures and roads near the stream
Major flood stage34.01May 29, 2019Extensive inundation of structures and roads

Every listed crest

16 crests from 2007 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Thompson River (IA/MO) near Trenton, 2007 to 2026 262830323436ft Flood stage 27.0 ftMajor 34.0 ft May 7, 2007: 30.81 ft, minor flooding; 48,728 cubic feet per secondJun 25, 2008: 31.52 ft, moderate floodingJul 25, 2008: 32.46 ft, moderate floodingSep 13, 2008: 31.44 ft, moderate floodingJun 6, 2010: 32.33 ft, moderate floodingApr 19, 2013: 31.52 ft, moderate floodingJun 5, 2014: 30.53 ft, minor floodingSep 10, 2014: 32.84 ft, moderate floodingOct 9, 2018: 29.79 ft, minor floodingMay 29, 2019: 34.38 ft, major floodingJun 23, 2019: 27.94 ft, minor floodingJun 25, 2021: 27.40 ft, minor floodingAug 5, 2023: 29.37 ft, minor floodingMay 2, 2024: 28.40 ft, minor floodingMay 17, 2026: 29.70 ft, minor floodingJun 11, 2026: 29.71 ft, minor flooding Highest, 34.38 ft, May 29, 2019 2010201520202025

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Thompson River (IA/MO) near Trenton 2000s: 4 2010s: 7 7 2020s: 5 2000s2010s2020s
  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, Thompson River (IA/MO) near Trenton
1May 29, 201934.38+7.38Major—
2Sep 10, 201432.84+5.84Moderate—
3Jul 25, 200832.46+5.46Moderate—
4Jun 6, 201032.33+5.33Moderate—
5Jun 25, 200831.52+4.52Moderate—
6Apr 19, 201331.52+4.52Moderate—
7Sep 13, 200831.44+4.44Moderate—
8May 7, 200730.81+3.81Minor48,728
9Jun 5, 201430.53+3.53Minor—
10Oct 9, 201829.79+2.79Minor—
11Jun 11, 202629.71+2.71Minor—
12May 17, 202629.70+2.70Minor—
13Aug 5, 202329.37+2.37Minor—
14May 2, 202428.40+1.40Minor—
15Jun 23, 201927.94+0.94Minor—
16Jun 25, 202127.40+0.40Minor—

Grundy County: every hazard · River floods across the country · Missouri

NOAA National Water Prediction Service, gauge TTZM7, 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.