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Heart River near Mandan

Highest listed crest 35.75 ftFlood stage 27.0 ft99 crests since 1921

The Heart River near Mandan crested above flood stage 34 times among the 99 crests the National Weather Service lists from 1921 to 2024. The highest, 35.75 ft on April 4, 1952, was moderate flooding, 8.75 feet above flood stage.

The gauge

Highest listed crest
35.75 ft
April 4, 1952; 30,000 cubic feet per second
Flood stage
27.0 ft
Major flooding from 38.0 ft
Crests at major
0
34 above flood stage
Most recent flood crest
April 14, 2023
29.27 ft, minor flooding
Location
Morton County
Near Mandan (4.1 mi), Bismarck (9.8 mi)

Flood stages

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

Flood categories, Heart River near Mandan
Action stage25.08Mar 18, 2001The level at which the NWS or its partners begin to take action
Flood stage (minor)27.020Apr 14, 2023Minimal or no property damage, but possibly some public threat
Moderate flood stage33.014Mar 24, 2019Some inundation of structures and roads near the stream
Major flood stage38.00—Extensive inundation of structures and roads

Every listed crest

99 crests from 1921 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Heart River near Mandan, 1921 to 2024 10203040ft Flood stage 27.0 ftMajor 38.0 ft Mar 11, 1921: 12.94 ft, below flood stage; 2,100 cubic feet per secondApr 25, 1922: 15.75 ft, below flood stage; 1,260 cubic feet per secondJun 19, 1924: 15.92 ft, below flood stageJul 12, 1928: 20.50 ft, below flood stage; 2,600 cubic feet per secondMar 20, 1929: 21.80 ft, below flood stageMar 18, 1930: 30.36 ft, minor floodingJun 30, 1931: 15.70 ft, below flood stage; 209 cubic feet per secondFeb 28, 1932: 21.55 ft, below flood stage; 3,400 cubic feet per secondMar 19, 1933: 26.38 ft, action stage; 2,530 cubic feet per secondJul 7, 1938: 26.90 ft, action stage; 7,320 cubic feet per secondMar 22, 1939: 33.40 ft, moderate floodingMay 20, 1940: 21.07 ft, below flood stage; 3,700 cubic feet per secondMar 27, 1941: 26.72 ft, action stageJun 11, 1941: 25.30 ft, action stage; 7,480 cubic feet per secondJun 10, 1942: 21.90 ft, below flood stage; 3,350 cubic feet per secondMar 27, 1943: 34.70 ft, moderate flooding; 21,400 cubic feet per secondApr 4, 1944: 32.75 ft, minor flooding; 12,000 cubic feet per secondMar 13, 1945: 32.30 ft, minor floodingMar 3, 1946: 23.99 ft, below flood stageMar 27, 1947: 32.16 ft, minor flooding; 9,500 cubic feet per secondMar 21, 1948: 33.31 ft, moderate floodingMar 29, 1949: 31.95 ft, minor flooding; 16,000 cubic feet per secondApr 19, 1950: 33.64 ft, moderate flooding; 30,500 cubic feet per secondMar 28, 1951: 34.35 ft, moderate floodingApr 3, 1951: 27.73 ft, minor flooding; 14,000 cubic feet per secondApr 4, 1952: 35.75 ft, moderate flooding; 30,000 cubic feet per secondJun 16, 1953: 21.35 ft, below flood stage; 6,200 cubic feet per secondApr 10, 1954: 19.52 ft, below flood stage; 3,720 cubic feet per secondMar 13, 1955: 19.36 ft, below flood stageMar 22, 1956: 31.60 ft, minor floodingJun 28, 1957: 17.78 ft, below flood stage; 1,380 cubic feet per secondMar 27, 1958: 22.08 ft, below flood stage; 2,500 cubic feet per secondMar 25, 1959: 21.28 ft, below flood stage; 4,100 cubic feet per secondMar 26, 1960: 29.50 ft, minor floodingMar 3, 1961: 16.17 ft, below flood stageJun 1, 1962: 19.98 ft, below flood stage; 2,480 cubic feet per secondJul 28, 1963: 17.21 ft, below flood stage; 915 cubic feet per secondJul 10, 1964: 21.19 ft, below flood stage; 3,030 cubic feet per secondApr 16, 1965: 19.67 ft, below flood stage; 2,850 cubic feet per secondMar 16, 1966: 28.20 ft, minor floodingJun 27, 1966: 26.25 ft, action stage; 12,900 cubic feet per secondMar 2, 1967: 29.00 ft, minor floodingMay 9, 1967: 22.34 ft, below flood stage; 6,820 cubic feet per secondMar 6, 1968: 21.70 ft, below flood stageApr 4, 1969: 32.84 ft, minor floodingMay 11, 1970: 28.71 ft, minor flooding; 15,000 cubic feet per secondMar 16, 1971: 30.64 ft, minor floodingMar 14, 1972: 34.05 ft, moderate flooding; 9,500 cubic feet per secondMar 4, 1973: 28.40 ft, minor floodingFeb 22, 1974: 17.26 ft, below flood stageApr 18, 1975: 26.30 ft, action stageMar 24, 1976: 18.66 ft, below flood stage; 1,300 cubic feet per secondJun 15, 1977: 18.83 ft, below flood stage; 2,650 cubic feet per secondMar 25, 1978: 34.85 ft, moderate floodingApr 11, 1979: 24.62 ft, below flood stageJun 18, 1980: 15.16 ft, below flood stage; 1,460 cubic feet per secondMar 16, 1981: 14.08 ft, below flood stage; 544 cubic feet per secondMar 30, 1982: 33.89 ft, moderate flooding; 20,000 cubic feet per secondMar 14, 1983: 28.71 ft, minor flooding; 5,000 cubic feet per secondJun 24, 1984: 19.57 ft, below flood stage; 4,220 cubic feet per secondMar 14, 1985: 18.92 ft, below flood stageMar 4, 1986: 33.42 ft, moderate floodingMar 22, 1987: 35.38 ft, moderate floodingMar 28, 1988: 15.06 ft, below flood stage; 1,370 cubic feet per secondMar 31, 1989: 15.88 ft, below flood stageMar 28, 1990: 15.06 ft, below flood stageJun 22, 1991: 14.28 ft, below flood stage; 1,250 cubic feet per secondFeb 26, 1992: 17.90 ft, below flood stageJul 23, 1993: 25.45 ft, action stage; 11,800 cubic feet per secondMar 18, 1994: 20.43 ft, below flood stageMar 14, 1995: 29.89 ft, minor flooding; 8,000 cubic feet per secondMar 23, 1997: 34.21 ft, moderate flooding; 22,000 cubic feet per secondAug 24, 1998: 19.62 ft, below flood stage; 4,500 cubic feet per secondMar 3, 1999: 28.55 ft, minor flooding; 5,700 cubic feet per secondMar 5, 2000: 14.64 ft, below flood stage; 1,000 cubic feet per secondMar 18, 2001: 26.03 ft, action stageMar 31, 2002: 13.79 ft, below flood stageMar 22, 2003: 23.38 ft, below flood stage; 5,000 cubic feet per secondMar 13, 2004: 23.84 ft, below flood stageJul 8, 2005: 13.95 ft, below flood stage; 1,460 cubic feet per secondMar 13, 2006: 11.16 ft, below flood stageJun 8, 2007: 13.52 ft, below flood stage; 1,370 cubic feet per secondJun 19, 2008: 12.79 ft, below flood stage; 969 cubic feet per secondMar 24, 2009: 34.07 ft, moderate flooding; 29,200 cubic feet per secondApr 1, 2010: 19.37 ft, below flood stage; 5,090 cubic feet per secondMar 22, 2011: 27.56 ft, minor floodingMar 12, 2012: 15.07 ft, below flood stageJun 4, 2013: 18.03 ft, below flood stage; 3,780 cubic feet per secondMar 12, 2014: 27.42 ft, minor floodingJun 23, 2015: 17.03 ft, below flood stage; 3,280 cubic feet per secondApr 26, 2016: 12.41 ft, below flood stage; 689 cubic feet per secondMar 26, 2017: 16.02 ft, below flood stageMar 30, 2018: 17.23 ft, below flood stageMar 24, 2019: 33.82 ft, moderate floodingMar 7, 2020: 15.76 ft, below flood stageMar 11, 2021: 10.67 ft, below flood stageApr 25, 2022: 13.48 ft, below flood stage; 1,260 cubic feet per secondApr 14, 2023: 29.27 ft, minor flooding; 1,615 cubic feet per secondMar 14, 2024: 15.78 ft, below flood stage; 1,890 cubic feet per second Highest, 35.75 ft, Apr 4, 1952 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Heart River near Mandan 1920s: 0 1930s: 2 1940s: 6 6 1950s: 5 1960s: 4 1970s: 5 1980s: 4 1990s: 3 2000s: 1 2010s: 3 2020s: 1 1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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 99 listed crests.

Highest listed crests, Heart River near Mandan
1Apr 4, 195235.75+8.75Moderate30,000
2Mar 22, 198735.38+8.38Moderate—
3Mar 25, 197834.85+7.85Moderate—
4Mar 27, 194334.70+7.70Moderate21,400
5Mar 28, 195134.35+7.35Moderate—
6Mar 23, 199734.21+7.21Moderate22,000
7Mar 24, 200934.07+7.07Moderate29,200
8Mar 14, 197234.05+7.05Moderate9,500
9Mar 30, 198233.89+6.89Moderate20,000
10Mar 24, 201933.82+6.82Moderate—
11Apr 19, 195033.64+6.64Moderate30,500
12Mar 4, 198633.42+6.42Moderate—
13Mar 22, 193933.40+6.40Moderate—
14Mar 21, 194833.31+6.31Moderate—
15Apr 4, 196932.84+5.84Minor—
16Apr 4, 194432.75+5.75Minor12,000
17Mar 13, 194532.30+5.30Minor—
18Mar 27, 194732.16+5.16Minor9,500
19Mar 29, 194931.95+4.95Minor16,000
20Mar 22, 195631.60+4.60Minor—
21Mar 16, 197130.64+3.64Minor—
22Mar 18, 193030.36+3.36Minor—
23Mar 14, 199529.89+2.89Minor8,000
24Mar 26, 196029.50+2.50Minor—
25Apr 14, 202329.27+2.27Minor1,615
26Mar 2, 196729.00+2.00Minor—
27May 11, 197028.71+1.71Minor15,000
28Mar 14, 198328.71+1.71Minor5,000
29Mar 3, 199928.55+1.55Minor5,700
30Mar 4, 197328.40+1.40Minor—
31Mar 16, 196628.20+1.20Minor—
32Apr 3, 195127.73+0.73Minor14,000
33Mar 22, 201127.56+0.56Minor—
34Mar 12, 201427.42+0.42Minor—
35Jul 7, 193826.90−0.10Action7,320
36Mar 27, 194126.72−0.28Action—
37Mar 19, 193326.38−0.62Action2,530
38Apr 18, 197526.30−0.70Action—
39Jun 27, 196626.25−0.75Action12,900
40Mar 18, 200126.03−0.97Action—
41Jul 23, 199325.45−1.55Action11,800
42Jun 11, 194125.30−1.70Action7,480
43Apr 11, 197924.62−2.38Below flood stage—
44Mar 3, 194623.99−3.01Below flood stage—
45Mar 13, 200423.84−3.16Below flood stage—
46Mar 22, 200323.38−3.62Below flood stage5,000
47May 9, 196722.34−4.66Below flood stage6,820
48Mar 27, 195822.08−4.92Below flood stage2,500
49Jun 10, 194221.90−5.10Below flood stage3,350
50Mar 20, 192921.80−5.20Below flood stage—

Other gauges in Morton County

Flood gauges in Morton County
Breien10.022.30 ft, Apr 19, 19500

Morton County: every hazard · River floods across the country · North Dakota

NOAA National Water Prediction Service, gauge MDNN8, 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.