Search
Menu

Explore

Hazards

Analysis

Rankings

Reference

Walnut Creek near Hartwick

Highest listed crest 17.70 ftFlood stage 14.0 ft82 crests since 1947

The Walnut Creek near Hartwick crested above flood stage 51 times among the 82 crests the National Weather Service lists from 1947 to 2025. The highest, 17.70 ft on June 1, 1947, was minor flooding, 3.70 feet above flood stage.

The gauge

Highest listed crest
17.70 ft
June 1, 1947
Flood stage
14.0 ft
No major stage set
Crests at major
0
51 above flood stage
Most recent flood crest
May 21, 2024
15.16 ft, minor flooding
Location
Poweshiek County
Iowa

Flood stages

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

Flood categories, Walnut Creek near Hartwick
Action stage12.012Jul 11, 2025The level at which the NWS or its partners begin to take action
Flood stage (minor)14.051May 21, 2024Minimal or no property damage, but possibly some public threat

Every listed crest

82 crests from 1947 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Walnut Creek near Hartwick, 1947 to 2025 05101520ft Flood stage 14.0 ft Jun 1, 1947: 17.70 ft, minor floodingJun 24, 1950: 15.12 ft, minor flooding; 3,600 cubic feet per secondJun 3, 1951: 13.27 ft, action stage; 1,450 cubic feet per secondMar 10, 1952: 13.90 ft, action stage; 1,820 cubic feet per secondFeb 20, 1953: 14.50 ft, minor flooding; 2,000 cubic feet per secondAug 26, 1954: 13.31 ft, action stage; 1,450 cubic feet per secondApr 23, 1955: 11.57 ft, below flood stage; 952 cubic feet per secondJul 31, 1956: 12.27 ft, action stage; 895 cubic feet per secondMay 31, 1957: 10.97 ft, below flood stage; 684 cubic feet per secondSep 3, 1958: 15.67 ft, minor flooding; 4,930 cubic feet per secondMar 20, 1959: 14.88 ft, minor flooding; 3,230 cubic feet per secondJan 12, 1960: 15.04 ft, minor flooding; 3,500 cubic feet per secondMar 6, 1961: 15.17 ft, minor flooding; 3,700 cubic feet per secondJul 14, 1962: 14.30 ft, minor flooding; 2,250 cubic feet per secondMar 4, 1963: 13.34 ft, action stageMar 12, 1963: 11.57 ft, below flood stage; 850 cubic feet per secondJun 23, 1964: 14.19 ft, minor flooding; 2,120 cubic feet per secondMar 30, 1965: 14.59 ft, minor flooding; 2,700 cubic feet per secondJun 13, 1966: 14.10 ft, minor flooding; 2,000 cubic feet per secondJun 10, 1967: 15.27 ft, minor flooding; 3,960 cubic feet per secondApr 3, 1968: 10.36 ft, below flood stage; 761 cubic feet per secondMar 17, 1969: 15.07 ft, minor floodingJun 8, 1969: 15.03 ft, minor flooding; 3,880 cubic feet per secondMar 2, 1970: 15.22 ft, minor flooding; 3,850 cubic feet per secondOct 9, 1970: 14.72 ft, minor flooding; 2,860 cubic feet per secondFeb 19, 1971: 14.86 ft, minor floodingFeb 28, 1972: 14.78 ft, minor floodingAug 6, 1972: 13.79 ft, action stage; 2,050 cubic feet per secondDec 30, 1972: 14.94 ft, minor floodingMay 28, 1974: 15.90 ft, minor flooding; 5,650 cubic feet per secondMar 19, 1975: 15.29 ft, minor flooding; 4,010 cubic feet per secondApr 24, 1976: 13.50 ft, action stage; 1,870 cubic feet per secondAug 16, 1977: 16.30 ft, minor flooding; 6,800 cubic feet per secondJul 19, 1978: 15.82 ft, minor flooding; 6,060 cubic feet per secondMar 19, 1979: 16.00 ft, minor flooding; 5,850 cubic feet per secondJun 14, 1980: 14.40 ft, minor flooding; 2,800 cubic feet per secondJun 24, 1981: 10.08 ft, below flood stage; 895 cubic feet per secondJul 18, 1982: 14.71 ft, minor flooding; 3,110 cubic feet per secondJul 2, 1983: 16.65 ft, minor flooding; 7,100 cubic feet per secondMay 27, 1984: 15.30 ft, minor flooding; 3,950 cubic feet per secondFeb 21, 1985: 15.90 ft, minor flooding; 3,400 cubic feet per secondAug 15, 1986: 15.22 ft, minor flooding; 3,880 cubic feet per secondSep 19, 1988: 7.54 ft, below flood stage; 471 cubic feet per secondJan 29, 1989: 9.36 ft, below flood stageSep 7, 1989: 8.42 ft, below flood stage; 607 cubic feet per secondJun 17, 1990: 15.79 ft, minor flooding; 6,850 cubic feet per secondApr 29, 1991: 16.93 ft, minor flooding; 7,900 cubic feet per secondJul 25, 1992: 15.52 ft, minor flooding; 3,800 cubic feet per secondAug 29, 1993: 16.76 ft, minor flooding; 5,770 cubic feet per secondFeb 18, 1994: 14.46 ft, minor floodingMar 4, 1994: 11.51 ft, below flood stage; 1,430 cubic feet per secondMay 9, 1995: 12.10 ft, action stage; 1,610 cubic feet per secondMay 10, 1996: 16.02 ft, minor flooding; 5,990 cubic feet per secondFeb 18, 1997: 15.47 ft, minor flooding; 2,300 cubic feet per secondJun 29, 1998: 12.11 ft, action stage; 1,610 cubic feet per secondJun 9, 1999: 12.45 ft, action stage; 1,720 cubic feet per secondJul 26, 2000: 11.76 ft, below flood stage; 1,510 cubic feet per secondJun 12, 2001: 15.02 ft, minor flooding; 4,170 cubic feet per secondJun 13, 2002: 10.32 ft, below flood stage; 1,240 cubic feet per secondMay 10, 2003: 10.36 ft, below flood stage; 1,160 cubic feet per secondAug 27, 2004: 15.59 ft, minor flooding; 7,180 cubic feet per secondMay 13, 2005: 14.03 ft, minor flooding; 3,270 cubic feet per secondMay 30, 2006: 9.31 ft, below flood stage; 1,180 cubic feet per secondJun 22, 2007: 14.85 ft, minor flooding; 3,380 cubic feet per secondJul 18, 2008: 15.80 ft, minor flooding; 4,930 cubic feet per secondAug 27, 2009: 15.55 ft, minor flooding; 4,460 cubic feet per secondJul 6, 2010: 15.33 ft, minor flooding; 4,070 cubic feet per secondJun 10, 2011: 10.42 ft, below flood stage; 1,110 cubic feet per secondMay 2, 2012: 4.04 ft, below flood stage; 146 cubic feet per secondMay 27, 2013: 15.84 ft, minor flooding; 5,010 cubic feet per secondJul 1, 2014: 16.92 ft, minor flooding; 8,580 cubic feet per secondAug 9, 2015: 15.34 ft, minor flooding; 4,090 cubic feet per secondDec 14, 2015: 15.42 ft, minor flooding; 4,230 cubic feet per secondApr 16, 2017: 10.64 ft, below flood stage; 1,170 cubic feet per secondSep 2, 2018: 16.20 ft, minor flooding; 5,020 cubic feet per secondMar 13, 2019: 16.27 ft, minor floodingJun 10, 2020: 13.73 ft, action stageMar 7, 2021: 7.67 ft, below flood stage; 821 cubic feet per secondMay 3, 2022: 6.05 ft, below flood stage; 515 cubic feet per secondFeb 27, 2023: 7.63 ft, below flood stage; 793 cubic feet per secondMay 21, 2024: 15.16 ft, minor flooding; 3,120 cubic feet per secondJul 11, 2025: 12.64 ft, action stage; 2,230 cubic feet per second Highest, 17.70 ft, Jun 1, 1947 19501960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Walnut Creek near Hartwick 1940s: 1 1950s: 4 1960s: 9 1970s: 10 10 1980s: 6 1990s: 7 2000s: 6 2010s: 7 2020s: 1 1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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 82 listed crests.

Highest listed crests, Walnut Creek near Hartwick
1Jun 1, 194717.70+3.70Minor—
2Apr 29, 199116.93+2.93Minor7,900
3Jul 1, 201416.92+2.92Minor8,580
4Aug 29, 199316.76+2.76Minor5,770
5Jul 2, 198316.65+2.65Minor7,100
6Aug 16, 197716.30+2.30Minor6,800
7Mar 13, 201916.27+2.27Minor—
8Sep 2, 201816.20+2.20Minor5,020
9May 10, 199616.02+2.02Minor5,990
10Mar 19, 197916.00+2.00Minor5,850
11May 28, 197415.90+1.90Minor5,650
12Feb 21, 198515.90+1.90Minor3,400
13May 27, 201315.84+1.84Minor5,010
14Jul 19, 197815.82+1.82Minor6,060
15Jul 18, 200815.80+1.80Minor4,930
16Jun 17, 199015.79+1.79Minor6,850
17Sep 3, 195815.67+1.67Minor4,930
18Aug 27, 200415.59+1.59Minor7,180
19Aug 27, 200915.55+1.55Minor4,460
20Jul 25, 199215.52+1.52Minor3,800
21Feb 18, 199715.47+1.47Minor2,300
22Dec 14, 201515.42+1.42Minor4,230
23Aug 9, 201515.34+1.34Minor4,090
24Jul 6, 201015.33+1.33Minor4,070
25May 27, 198415.30+1.30Minor3,950
26Mar 19, 197515.29+1.29Minor4,010
27Jun 10, 196715.27+1.27Minor3,960
28Mar 2, 197015.22+1.22Minor3,850
29Aug 15, 198615.22+1.22Minor3,880
30Mar 6, 196115.17+1.17Minor3,700
31May 21, 202415.16+1.16Minor3,120
32Jun 24, 195015.12+1.12Minor3,600
33Mar 17, 196915.07+1.07Minor—
34Jan 12, 196015.04+1.04Minor3,500
35Jun 8, 196915.03+1.03Minor3,880
36Jun 12, 200115.02+1.02Minor4,170
37Dec 30, 197214.94+0.94Minor—
38Mar 20, 195914.88+0.88Minor3,230
39Feb 19, 197114.86+0.86Minor—
40Jun 22, 200714.85+0.85Minor3,380
41Feb 28, 197214.78+0.78Minor—
42Oct 9, 197014.72+0.72Minor2,860
43Jul 18, 198214.71+0.71Minor3,110
44Mar 30, 196514.59+0.59Minor2,700
45Feb 20, 195314.50+0.50Minor2,000
46Feb 18, 199414.46+0.46Minor—
47Jun 14, 198014.40+0.40Minor2,800
48Jul 14, 196214.30+0.30Minor2,250
49Jun 23, 196414.19+0.19Minor2,120
50Jun 13, 196614.10+0.10Minor2,000

The worst floods along the Walnut Creek

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

August 29, 1993: 16.76 ft here, minor flooding

Gauges on the Walnut Creek

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

Flood gauges on the Walnut Creek
Clive I-80/35IA9.013.41 ft, Jun 25, 20150
Des Moines 63rd StIA14.019.08 ft, Jun 30, 20189
Hartwick this gaugeIA14.017.70 ft, Jun 1, 19470
Waukee 156th StIA9.013.34 ft, Jul 9, 19930

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

NOAA National Water Prediction Service, gauge HRTI4, 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.