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Maquoketa River at Manchester Hwy 20

Highest listed crest 24.48 ftFlood stage 14.0 ft25 crests since 2001

The Maquoketa River at Manchester Hwy 20 crested at major flood stage 6 times among the 25 crests the National Weather Service lists from 2001 to 2019. The highest, 24.48 ft on July 24, 2010, was major flooding, 10.48 feet above flood stage. 1 other gauge on the Maquoketa River crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest
24.48 ft
July 24, 2010; 26,600 cubic feet per second
Flood stage
14.0 ft
Major flooding from 20.0 ft
Crests at major
6
41st of 203 gauges in Iowa
Most recent flood crest
March 14, 2019
17.57 ft, moderate flooding
Location
Delaware County
Iowa

Flood stages

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

Flood categories, Maquoketa River at Manchester Hwy 20
Action stage12.01Apr 4, 2007The level at which the NWS or its partners begin to take action
Flood stage (minor)14.03Jun 20, 2014Minimal or no property damage, but possibly some public threat
Moderate flood stage17.04Mar 14, 2019Some inundation of structures and roads near the stream
Major flood stage20.06Sep 23, 2016Extensive inundation of structures and roads

Every listed crest

25 crests from 2001 to 2019. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Maquoketa River at Manchester Hwy 20, 2001 to 2019 510152025ft Flood stage 14.0 ftMajor 20.0 ft Mar 23, 2001: 9.54 ft, below flood stage; 1,960 cubic feet per secondOct 21, 2001: 8.31 ft, below flood stage; 1,440 cubic feet per secondJun 4, 2002: 18.35 ft, moderate flooding; 10,800 cubic feet per secondJul 9, 2003: 11.37 ft, below flood stage; 2,970 cubic feet per secondNov 4, 2003: 8.84 ft, below flood stage; 1,660 cubic feet per secondMar 6, 2004: 9.68 ft, below flood stage; 2,030 cubic feet per secondMar 26, 2004: 8.32 ft, below flood stage; 1,450 cubic feet per secondMay 23, 2004: 21.66 ft, major flooding; 26,000 cubic feet per secondMay 31, 2004: 14.17 ft, minor flooding; 5,200 cubic feet per secondJun 12, 2004: 7.63 ft, below flood stage; 1,180 cubic feet per secondJun 17, 2004: 10.31 ft, below flood stage; 2,360 cubic feet per secondJul 7, 2004: 8.99 ft, below flood stage; 1,720 cubic feet per secondFeb 14, 2005: 9.22 ft, below flood stage; 1,820 cubic feet per secondApr 3, 2006: 8.32 ft, below flood stage; 1,450 cubic feet per secondApr 4, 2007: 12.18 ft, action stage; 3,520 cubic feet per secondApr 25, 2008: 18.95 ft, moderate floodingMay 26, 2008: 20.80 ft, major flooding; 22,100 cubic feet per secondMay 30, 2008: 20.10 ft, major floodingJun 9, 2008: 20.50 ft, major floodingApr 27, 2009: 14.37 ft, minor flooding; 5,400 cubic feet per secondJul 24, 2010: 24.48 ft, major flooding; 26,600 cubic feet per secondMay 30, 2013: 19.31 ft, moderate flooding; 13,900 cubic feet per secondJun 20, 2014: 16.09 ft, minor flooding; 8,290 cubic feet per secondSep 23, 2016: 20.34 ft, major flooding; 16,043 cubic feet per secondMar 14, 2019: 17.57 ft, moderate flooding; 10,600 cubic feet per second Highest, 24.48 ft, Jul 24, 2010 2005201020152020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Maquoketa River at Manchester Hwy 20 2000s: 8 8 2010s: 5 2000s2010s
  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, Maquoketa River at Manchester Hwy 20
1Jul 24, 201024.48+10.48Major26,600
2May 23, 200421.66+7.66Major26,000
3May 26, 200820.80+6.80Major22,100
4Jun 9, 200820.50+6.50Major—
5Sep 23, 201620.34+6.34Major16,043
6May 30, 200820.10+6.10Major—
7May 30, 201319.31+5.31Moderate13,900
8Apr 25, 200818.95+4.95Moderate—
9Jun 4, 200218.35+4.35Moderate10,800
10Mar 14, 201917.57+3.57Moderate10,600
11Jun 20, 201416.09+2.09Minor8,290
12Apr 27, 200914.37+0.37Minor5,400
13May 31, 200414.17+0.17Minor5,200
14Apr 4, 200712.18−1.82Action3,520
15Jul 9, 200311.37−2.63Below flood stage2,970
16Jun 17, 200410.31−3.69Below flood stage2,360
17Mar 6, 20049.68−4.32Below flood stage2,030
18Mar 23, 20019.54−4.46Below flood stage1,960
19Feb 14, 20059.22−4.78Below flood stage1,820
20Jul 7, 20048.99−5.01Below flood stage1,720
21Nov 4, 20038.84−5.16Below flood stage1,660
22Mar 26, 20048.32−5.68Below flood stage1,450
23Apr 3, 20068.32−5.68Below flood stage1,450
24Oct 21, 20018.31−5.69Below flood stage1,440
25Jun 12, 20047.63−6.37Below flood stage1,180

The worst floods along the Maquoketa River

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

July 24, 2010: 24.48 ft here, major flooding

  • MaquoketaIA · Jul 26, 2010 · 35.26 ft · Major · its highest

May 23, 2004: 21.66 ft here, major flooding

  • MaquoketaIA · May 25, 2004 · 25.61 ft · Minor

June 9, 2008: 20.50 ft here, major flooding

  • MaquoketaIA · Jun 14, 2008 · 31.23 ft · Major

Gauges on the Maquoketa River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Maquoketa River
Manchester Hwy 20 this gaugeIA14.024.48 ft, Jul 24, 20106
MaquoketaIA24.035.26 ft, Jul 26, 201013

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

NOAA National Water Prediction Service, gauge MCHI4, 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.