Search
Menu

Explore

Hazards

Analysis

Rankings

Reference

Yellow River near Ion

Highest listed crest 17.11 ftFlood stage 13.0 ft14 crests since 1941

The Yellow River near Ion crested at major flood stage 1 time among the 14 crests the National Weather Service lists from 1941 to 2016. The highest, 17.11 ft on February 10, 2009, was major flooding, 4.11 feet above flood stage.

The gauge

Highest listed crest
17.11 ft
February 10, 2009; 14,850 cubic feet per second
Flood stage
13.0 ft
Major flooding from 17.0 ft
Crests at major
1
93rd of 203 gauges in Iowa
Most recent flood crest
September 23, 2016
13.71 ft, minor 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, Yellow River near Ion
Action stage10.04Mar 23, 2010The level at which the NWS or its partners begin to take action
Flood stage (minor)13.07Sep 23, 2016Minimal or no property damage, but possibly some public threat
Moderate flood stage15.02Jun 9, 2008Some inundation of structures and roads near the stream
Major flood stage17.01Feb 10, 2009Extensive inundation of structures and roads

Every listed crest

14 crests from 1941 to 2016. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Yellow River near Ion, 1941 to 2016 1012141618ft Flood stage 13.0 ftMajor 17.0 ft May 29, 1941: 15.20 ft, moderate flooding; 21,200 cubic feet per secondJun 16, 1944: 13.50 ft, minor flooding; 12,200 cubic feet per secondJan 1, 1945: 13.10 ft, minor flooding; 11,600 cubic feet per secondJun 5, 1946: 13.00 ft, minor flooding; 13,000 cubic feet per secondMar 19, 1948: 12.50 ft, action stage; 13,000 cubic feet per secondMar 26, 1950: 12.80 ft, action stage; 15,700 cubic feet per secondApr 7, 1951: 10.34 ft, action stage; 10,500 cubic feet per secondAug 20, 2007: 14.64 ft, minor flooding; 8,690 cubic feet per secondApr 26, 2008: 14.97 ft, minor flooding; 10,040 cubic feet per secondJun 9, 2008: 16.03 ft, moderate flooding; 12,300 cubic feet per secondFeb 10, 2009: 17.11 ft, major flooding; 14,850 cubic feet per secondMar 23, 2010: 10.91 ft, action stage; 3,670 cubic feet per secondAug 25, 2016: 14.01 ft, minor flooding; 8,940 cubic feet per secondSep 23, 2016: 13.71 ft, minor flooding; 8,183 cubic feet per second Highest, 17.11 ft, Feb 10, 2009 1950196019701980199020002010

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Yellow River near Ion 1940s: 4 4 1950s: 0 1960s: 0 1970s: 0 1980s: 0 1990s: 0 2000s: 4 2010s: 2 1940s1950s1960s1970s1980s1990s2000s2010s
  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, Yellow River near Ion
1Feb 10, 200917.11+4.11Major14,850
2Jun 9, 200816.03+3.03Moderate12,300
3May 29, 194115.20+2.20Moderate21,200
4Apr 26, 200814.97+1.97Minor10,040
5Aug 20, 200714.64+1.64Minor8,690
6Aug 25, 201614.01+1.01Minor8,940
7Sep 23, 201613.71+0.71Minor8,183
8Jun 16, 194413.50+0.50Minor12,200
9Jan 1, 194513.10+0.10Minor11,600
10Jun 5, 194613.000.00Minor13,000
11Mar 26, 195012.80−0.20Action15,700
12Mar 19, 194812.50−0.50Action13,000
13Mar 23, 201010.91−2.09Action3,670
14Apr 7, 195110.34−2.66Action10,500

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
Dorchester10.015.05 ft, Jul 2, 20267

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

NOAA National Water Prediction Service, gauge YRII4, 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.