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Maple River at Mapleton

Highest listed crest 24.70 ftFlood stage 21.0 ft70 crests since 1957

The Maple River at Mapleton crested at major flood stage 2 times among the 70 crests the National Weather Service lists from 1957 to 2025. The highest, 24.70 ft on May 31, 1959, was major flooding, 3.70 feet above flood stage.

The gauge

Highest listed crest
24.70 ft
May 31, 1959; 14,000 cubic feet per second
Flood stage
21.0 ft
Major flooding from 23.0 ft
Crests at major
2
70th of 203 gauges in Iowa
Most recent flood crest
March 14, 2019
23.60 ft, major flooding
Location
Monona County
Iowa

Flood stages

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

Flood categories, Maple River at Mapleton
Action stage19.08May 28, 2013The level at which the NWS or its partners begin to take action
Flood stage (minor)21.03Jun 21, 1983Minimal or no property damage, but possibly some public threat
Moderate flood stage22.01Mar 30, 1960Some inundation of structures and roads near the stream
Major flood stage23.02Mar 14, 2019Extensive inundation of structures and roads

Every listed crest

70 crests from 1957 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Maple River at Mapleton, 1957 to 2025 510152025ft Flood stage 21.0 ftMajor 23.0 ft Jun 14, 1957: 14.95 ft, below flood stage; 2,820 cubic feet per secondFeb 27, 1958: 13.60 ft, below flood stage; 1,800 cubic feet per secondMay 31, 1959: 24.70 ft, major flooding; 14,000 cubic feet per secondMar 30, 1960: 22.90 ft, moderate flooding; 11,400 cubic feet per secondJun 13, 1961: 14.36 ft, below flood stage; 4,280 cubic feet per secondMar 28, 1962: 21.05 ft, minor flooding; 13,500 cubic feet per secondJun 4, 1963: 20.50 ft, action stage; 12,000 cubic feet per secondMay 25, 1964: 20.36 ft, action stage; 11,800 cubic feet per secondApr 1, 1965: 17.14 ft, below flood stage; 9,240 cubic feet per secondJun 9, 1966: 12.17 ft, below flood stage; 2,950 cubic feet per secondJun 9, 1967: 17.98 ft, below flood stage; 11,100 cubic feet per secondAug 9, 1968: 10.33 ft, below flood stage; 1,480 cubic feet per secondApr 4, 1969: 15.58 ft, below flood stage; 6,250 cubic feet per secondMay 13, 1970: 14.76 ft, below flood stage; 5,660 cubic feet per secondFeb 19, 1971: 20.17 ft, action stage; 15,700 cubic feet per secondJun 13, 1972: 15.28 ft, below flood stage; 6,310 cubic feet per secondMar 2, 1973: 13.85 ft, below flood stage; 6,660 cubic feet per secondMay 18, 1974: 13.95 ft, below flood stage; 6,180 cubic feet per secondApr 27, 1975: 18.17 ft, below flood stage; 11,200 cubic feet per secondMay 22, 1976: 9.64 ft, below flood stage; 1,680 cubic feet per secondJul 20, 1977: 14.83 ft, below flood stage; 5,750 cubic feet per secondSep 12, 1978: 21.74 ft, minor flooding; 20,800 cubic feet per secondMar 20, 1979: 18.76 ft, below flood stage; 11,000 cubic feet per secondMar 15, 1980: 9.37 ft, below flood stage; 1,590 cubic feet per secondJul 25, 1981: 10.96 ft, below flood stage; 2,580 cubic feet per secondJul 6, 1982: 15.84 ft, below flood stage; 7,950 cubic feet per secondJun 21, 1983: 21.84 ft, minor flooding; 17,200 cubic feet per secondJun 8, 1984: 20.51 ft, action stage; 14,900 cubic feet per secondJun 15, 1985: 11.40 ft, below flood stage; 3,260 cubic feet per secondMar 18, 1986: 15.85 ft, below flood stage; 7,960 cubic feet per secondJul 12, 1987: 11.81 ft, below flood stage; 3,440 cubic feet per secondAug 22, 1988: 12.29 ft, below flood stage; 4,480 cubic feet per secondMay 29, 1989: 13.20 ft, below flood stage; 5,470 cubic feet per secondJun 17, 1990: 18.76 ft, below flood stage; 12,500 cubic feet per secondJun 15, 1991: 19.99 ft, action stage; 16,100 cubic feet per secondJul 14, 1992: 10.47 ft, below flood stage; 2,680 cubic feet per secondJul 9, 1993: 14.67 ft, below flood stage; 7,130 cubic feet per secondFeb 18, 1994: 12.68 ft, below flood stage; 3,950 cubic feet per secondMay 28, 1995: 9.84 ft, below flood stage; 2,150 cubic feet per secondJun 21, 1996: 19.66 ft, action stage; 15,500 cubic feet per secondFeb 19, 1997: 20.32 ft, action stage; 4,670 cubic feet per secondJun 24, 1998: 15.76 ft, below flood stage; 8,590 cubic feet per secondJul 2, 1999: 11.55 ft, below flood stage; 3,740 cubic feet per secondFeb 25, 2000: 6.03 ft, below flood stage; 306 cubic feet per secondMar 21, 2001: 11.33 ft, below flood stage; 3,160 cubic feet per secondJun 12, 2002: 8.85 ft, below flood stage; 1,400 cubic feet per secondJul 10, 2003: 15.32 ft, below flood stage; 7,520 cubic feet per secondJun 17, 2004: 17.91 ft, below flood stage; 11,100 cubic feet per secondJun 28, 2005: 10.16 ft, below flood stage; 2,540 cubic feet per secondMay 2, 2006: 8.39 ft, below flood stage; 1,290 cubic feet per secondMay 7, 2007: 18.96 ft, below flood stage; 13,400 cubic feet per secondJun 9, 2008: 15.81 ft, below flood stage; 8,540 cubic feet per secondFeb 10, 2009: 12.51 ft, below flood stage; 4,240 cubic feet per secondJun 27, 2010: 15.74 ft, below flood stage; 8,260 cubic feet per secondFeb 17, 2011: 13.54 ft, below flood stageJun 28, 2011: 11.77 ft, below flood stage; 4,010 cubic feet per secondJun 20, 2012: 8.58 ft, below flood stage; 1,590 cubic feet per secondMay 28, 2013: 20.43 ft, action stage; 17,100 cubic feet per secondJun 18, 2014: 15.44 ft, below flood stage; 7,900 cubic feet per secondJul 28, 2015: 16.27 ft, below flood stage; 8,920 cubic feet per secondMay 1, 2016: 11.99 ft, below flood stage; 4,210 cubic feet per secondAug 21, 2017: 10.65 ft, below flood stage; 3,060 cubic feet per secondJun 21, 2018: 8.96 ft, below flood stage; 1,890 cubic feet per secondMar 14, 2019: 23.60 ft, major flooding; 26,900 cubic feet per secondFeb 18, 2020: 8.33 ft, below flood stageMar 5, 2021: 5.87 ft, below flood stage; 464 cubic feet per secondJun 2, 2022: 5.46 ft, below flood stage; 483 cubic feet per secondFeb 15, 2023: 14.46 ft, below flood stageMay 8, 2024: 10.63 ft, below flood stage; 2,450 cubic feet per secondJul 30, 2025: 12.99 ft, below flood stage; 5,180 cubic feet per second Highest, 24.70 ft, May 31, 1959 1960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Maple River at Mapleton 1950s: 1 1960s: 2 2 1970s: 1 1980s: 1 1990s: 0 2000s: 0 2010s: 1 2020s: 0 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 70 listed crests.

Highest listed crests, Maple River at Mapleton
1May 31, 195924.70+3.70Major14,000
2Mar 14, 201923.60+2.60Major26,900
3Mar 30, 196022.90+1.90Moderate11,400
4Jun 21, 198321.84+0.84Minor17,200
5Sep 12, 197821.74+0.74Minor20,800
6Mar 28, 196221.05+0.05Minor13,500
7Jun 8, 198420.51−0.49Action14,900
8Jun 4, 196320.50−0.50Action12,000
9May 28, 201320.43−0.57Action17,100
10May 25, 196420.36−0.64Action11,800
11Feb 19, 199720.32−0.68Action4,670
12Feb 19, 197120.17−0.83Action15,700
13Jun 15, 199119.99−1.01Action16,100
14Jun 21, 199619.66−1.34Action15,500
15May 7, 200718.96−2.04Below flood stage13,400
16Mar 20, 197918.76−2.24Below flood stage11,000
17Jun 17, 199018.76−2.24Below flood stage12,500
18Apr 27, 197518.17−2.83Below flood stage11,200
19Jun 9, 196717.98−3.02Below flood stage11,100
20Jun 17, 200417.91−3.09Below flood stage11,100
21Apr 1, 196517.14−3.86Below flood stage9,240
22Jul 28, 201516.27−4.73Below flood stage8,920
23Mar 18, 198615.85−5.15Below flood stage7,960
24Jul 6, 198215.84−5.16Below flood stage7,950
25Jun 9, 200815.81−5.19Below flood stage8,540
26Jun 24, 199815.76−5.24Below flood stage8,590
27Jun 27, 201015.74−5.26Below flood stage8,260
28Apr 4, 196915.58−5.42Below flood stage6,250
29Jun 18, 201415.44−5.56Below flood stage7,900
30Jul 10, 200315.32−5.68Below flood stage7,520
31Jun 13, 197215.28−5.72Below flood stage6,310
32Jun 14, 195714.95−6.05Below flood stage2,820
33Jul 20, 197714.83−6.17Below flood stage5,750
34May 13, 197014.76−6.24Below flood stage5,660
35Jul 9, 199314.67−6.33Below flood stage7,130
36Feb 15, 202314.46−6.54Below flood stage—
37Jun 13, 196114.36−6.64Below flood stage4,280
38May 18, 197413.95−7.05Below flood stage6,180
39Mar 2, 197313.85−7.15Below flood stage6,660
40Feb 27, 195813.60−7.40Below flood stage1,800
41Feb 17, 201113.54−7.46Below flood stage—
42May 29, 198913.20−7.80Below flood stage5,470
43Jul 30, 202512.99−8.01Below flood stage5,180
44Feb 18, 199412.68−8.32Below flood stage3,950
45Feb 10, 200912.51−8.49Below flood stage4,240
46Aug 22, 198812.29−8.71Below flood stage4,480
47Jun 9, 196612.17−8.83Below flood stage2,950
48May 1, 201611.99−9.01Below flood stage4,210
49Jul 12, 198711.81−9.19Below flood stage3,440
50Jun 28, 201111.77−9.23Below flood stage4,010

The worst floods along the Maple River

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

March 14, 2019: 23.60 ft here, major flooding

  • Ida GroveIA · Mar 14, 2019 · 1,217.76 ft · Major · its highest

Gauges on the Maple River

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

Flood gauges on the Maple River
Ida GroveIA1,208.01,217.76 ft, Mar 14, 20191
Mapleton this gaugeIA21.024.70 ft, May 31, 19592

Other gauges in Monona County

Flood gauges in Monona County
Turin25.029.57 ft, Mar 15, 20190
Turin23.026.12 ft, Mar 15, 20190

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

NOAA National Water Prediction Service, gauge MAPI4, 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.