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Bourbeuse River at Union

Highest listed crest 34.31 ftFlood stage 15.0 ft132 crests since 1918

The Bourbeuse River at Union crested at major flood stage 5 times among the 132 crests the National Weather Service lists from 1918 to 2025. The highest, 34.31 ft on December 29, 2015, was major flooding, 19.31 feet above flood stage. 1 other gauge on the Bourbeuse River crested above flood stage within a week of it.

The gauge

Highest listed crest
34.31 ft
December 29, 2015; 64,000 cubic feet per second
Flood stage
15.0 ft
Major flooding from 26.0 ft
Crests at major
5
41st of 173 gauges in Missouri
Most recent flood crest
April 22, 2025
15.35 ft, minor flooding
Location
Franklin County
Near Union (0.4 mi), Washington (7.5 mi)

Flood stages

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

Flood categories, Bourbeuse River at Union
Action stage13.014Apr 20, 2013The level at which the NWS or its partners begin to take action
Flood stage (minor)15.088Apr 22, 2025Minimal or no property damage, but possibly some public threat
Moderate flood stage22.013May 8, 2022Some inundation of structures and roads near the stream
Major flood stage26.05May 2, 2017Extensive inundation of structures and roads

Every listed crest

132 crests from 1918 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Bourbeuse River at Union, 1918 to 2025 010203040ft Flood stage 15.0 ftMajor 26.0 ft Apr 30, 1918: 18.70 ft, minor flooding; 15,700 cubic feet per secondApr 28, 1921: 18.10 ft, minor flooding; 14,600 cubic feet per secondApr 2, 1922: 17.70 ft, minor flooding; 14,600 cubic feet per secondMar 17, 1923: 14.10 ft, action stage; 8,930 cubic feet per secondMay 31, 1924: 17.16 ft, minor flooding; 13,700 cubic feet per secondDec 21, 1924: 15.40 ft, minor flooding; 10,700 cubic feet per secondNov 10, 1925: 16.14 ft, minor flooding; 11,800 cubic feet per secondApr 3, 1927: 22.10 ft, moderate flooding; 22,500 cubic feet per secondApr 7, 1928: 20.00 ft, minor flooding; 17,100 cubic feet per secondMay 21, 1929: 16.90 ft, minor flooding; 12,400 cubic feet per secondJan 16, 1930: 17.00 ft, minor flooding; 12,500 cubic feet per secondMay 21, 1931: 12.20 ft, below flood stage; 6,650 cubic feet per secondJan 3, 1932: 13.80 ft, action stage; 8,540 cubic feet per secondMay 16, 1933: 20.55 ft, minor flooding; 18,300 cubic feet per secondSep 16, 1934: 17.10 ft, minor flooding; 12,600 cubic feet per secondJun 23, 1935: 19.00 ft, minor flooding; 15,400 cubic feet per secondApr 7, 1936: 11.90 ft, below flood stage; 6,290 cubic feet per secondJun 12, 1937: 18.42 ft, minor flooding; 14,500 cubic feet per secondApr 19, 1939: 16.58 ft, minor flooding; 12,200 cubic feet per secondFeb 29, 1940: 9.45 ft, below flood stage; 3,700 cubic feet per secondApr 21, 1941: 20.09 ft, minor flooding; 18,700 cubic feet per secondJun 28, 1942: 21.00 ft, minor flooding; 21,100 cubic feet per secondDec 29, 1942: 22.00 ft, moderate flooding; 24,100 cubic feet per secondMay 11, 1944: 16.00 ft, minor flooding; 11,400 cubic feet per secondJun 10, 1945: 23.10 ft, moderate flooding; 28,500 cubic feet per secondFeb 16, 1946: 15.46 ft, minor flooding; 11,100 cubic feet per secondApr 29, 1947: 22.10 ft, moderate flooding; 25,100 cubic feet per secondJul 28, 1948: 14.89 ft, action stage; 10,500 cubic feet per secondFeb 17, 1949: 14.82 ft, action stage; 10,400 cubic feet per secondOct 14, 1949: 20.05 ft, minor flooding; 20,200 cubic feet per secondJul 15, 1951: 19.79 ft, minor flooding; 19,800 cubic feet per secondApr 6, 1952: 13.20 ft, action stage; 8,970 cubic feet per secondMar 5, 1953: 11.85 ft, below flood stage; 7,330 cubic feet per secondJun 11, 1954: 10.76 ft, below flood stage; 6,250 cubic feet per secondFeb 22, 1955: 12.14 ft, below flood stage; 7,670 cubic feet per secondJun 2, 1956: 12.98 ft, below flood stage; 8,730 cubic feet per secondJul 1, 1957: 24.44 ft, moderate flooding; 33,100 cubic feet per secondMar 26, 1958: 14.96 ft, action stage; 11,000 cubic feet per secondFeb 12, 1959: 13.96 ft, action stage; 9,140 cubic feet per secondDec 29, 1959: 12.19 ft, below flood stage; 7,670 cubic feet per secondMay 9, 1961: 20.19 ft, minor flooding; 20,200 cubic feet per secondMar 23, 1962: 17.82 ft, minor flooding; 15,900 cubic feet per secondMay 28, 1963: 11.28 ft, below flood stage; 7,100 cubic feet per secondApr 8, 1964: 16.59 ft, minor flooding; 14,000 cubic feet per secondApr 8, 1965: 11.72 ft, below flood stage; 7,520 cubic feet per secondFeb 12, 1966: 18.14 ft, minor flooding; 16,800 cubic feet per secondMay 17, 1967: 16.70 ft, minor flooding; 14,200 cubic feet per secondMay 28, 1968: 13.89 ft, action stage; 10,100 cubic feet per secondFeb 1, 1969: 19.34 ft, minor flooding; 19,300 cubic feet per secondMay 3, 1970: 18.43 ft, minor flooding; 17,400 cubic feet per secondOct 29, 1970: 12.12 ft, below flood stage; 7,940 cubic feet per secondApr 23, 1972: 15.76 ft, minor flooding; 12,700 cubic feet per secondMar 14, 1973: 17.07 ft, minor flooding; 14,800 cubic feet per secondJan 22, 1974: 13.92 ft, action stage; 10,100 cubic feet per secondApr 27, 1975: 21.26 ft, minor flooding; 24,000 cubic feet per secondMar 5, 1976: 13.23 ft, action stage; 9,220 cubic feet per secondMar 31, 1977: 17.82 ft, minor flooding; 16,200 cubic feet per secondMar 27, 1978: 16.02 ft, minor flooding; 13,200 cubic feet per secondApr 14, 1979: 22.70 ft, moderate flooding; 28,200 cubic feet per secondApr 10, 1980: 8.64 ft, below flood stage; 4,430 cubic feet per secondMay 21, 1981: 19.65 ft, minor flooding; 20,100 cubic feet per secondFeb 18, 1982: 16.04 ft, minor flooding; 13,000 cubic feet per secondDec 5, 1982: 33.80 ft, major flooding; 73,300 cubic feet per secondMay 3, 1983: 20.90 ft, minor floodingMar 7, 1984: 18.05 ft, minor flooding; 16,600 cubic feet per secondFeb 25, 1985: 21.57 ft, minor flooding; 25,600 cubic feet per secondJun 20, 1985: 21.00 ft, minor floodingNov 21, 1985: 21.06 ft, minor flooding; 24,400 cubic feet per secondFeb 6, 1986: 19.60 ft, minor floodingOct 4, 1986: 19.50 ft, minor flooding; 20,300 cubic feet per secondDec 22, 1987: 17.73 ft, minor flooding; 16,000 cubic feet per secondMar 22, 1989: 14.31 ft, action stage; 10,600 cubic feet per secondMay 19, 1990: 17.84 ft, minor flooding; 16,200 cubic feet per secondApr 18, 1991: 18.59 ft, minor flooding; 17,700 cubic feet per secondJul 9, 1993: 26.37 ft, major flooding; 36,700 cubic feet per secondNov 17, 1993: 20.30 ft, minor floodingApr 13, 1994: 27.77 ft, major flooding; 42,000 cubic feet per secondMay 20, 1995: 23.54 ft, moderate flooding; 27,200 cubic feet per secondMay 1, 1996: 22.95 ft, moderate flooding; 25,700 cubic feet per secondMar 1, 1997: 17.95 ft, minor flooding; 15,700 cubic feet per secondJun 7, 1998: 20.21 ft, minor flooding; 19,700 cubic feet per secondFeb 9, 1999: 14.64 ft, action stage; 10,600 cubic feet per secondMay 7, 2000: 24.53 ft, moderate flooding; 31,800 cubic feet per secondFeb 27, 2001: 16.69 ft, minor flooding; 12,100 cubic feet per secondFeb 2, 2002: 16.90 ft, minor floodingMay 11, 2002: 18.36 ft, minor flooding; 16,300 cubic feet per secondJun 14, 2003: 17.71 ft, minor flooding; 15,200 cubic feet per secondJan 6, 2004: 15.60 ft, minor flooding; 11,708 cubic feet per secondMar 7, 2004: 15.69 ft, minor flooding; 11,700 cubic feet per secondAug 3, 2004: 17.20 ft, minor flooding; 14,300 cubic feet per secondJan 7, 2005: 23.89 ft, moderate flooding; 29,700 cubic feet per secondJan 15, 2007: 14.10 ft, action stage; 9,890 cubic feet per secondMar 21, 2008: 25.89 ft, moderate flooding; 36,900 cubic feet per secondApr 3, 2008: 18.04 ft, minor flooding; 16,100 cubic feet per secondApr 13, 2008: 17.09 ft, minor flooding; 14,200 cubic feet per secondMay 10, 2008: 15.20 ft, minor flooding; 11,100 cubic feet per secondSep 17, 2008: 21.71 ft, minor flooding; 24,200 cubic feet per secondFeb 13, 2009: 16.34 ft, minor flooding; 12,700 cubic feet per secondMay 11, 2009: 19.14 ft, minor flooding; 18,300 cubic feet per secondJun 19, 2009: 15.68 ft, minor flooding; 11,680 cubic feet per secondOct 12, 2009: 18.36 ft, minor flooding; 16,700 cubic feet per secondNov 2, 2009: 21.86 ft, minor flooding; 24,600 cubic feet per secondJan 26, 2010: 15.21 ft, minor flooding; 11,100 cubic feet per secondMay 17, 2010: 15.22 ft, minor flooding; 11,100 cubic feet per secondMay 23, 2010: 16.33 ft, minor flooding; 12,700 cubic feet per secondJun 11, 2010: 18.36 ft, minor flooding; 16,500 cubic feet per secondMar 17, 2011: 15.42 ft, minor flooding; 11,400 cubic feet per secondApr 17, 2012: 17.49 ft, minor flooding; 15,000 cubic feet per secondApr 20, 2013: 14.14 ft, action stage; 9,650 cubic feet per secondMay 5, 2013: 15.15 ft, minor flooding; 10,900 cubic feet per secondJun 3, 2013: 22.12 ft, moderate flooding; 21,700 cubic feet per secondApr 6, 2014: 19.02 ft, minor flooding; 17,600 cubic feet per secondJun 22, 2015: 20.92 ft, minor flooding; 20,900 cubic feet per secondNov 20, 2015: 19.74 ft, minor flooding; 19,200 cubic feet per secondDec 29, 2015: 34.31 ft, major flooding; 64,000 cubic feet per secondMay 2, 2017: 29.38 ft, major flooding; 43,800 cubic feet per secondMay 6, 2017: 20.83 ft, minor flooding; 19,700 cubic feet per secondFeb 27, 2018: 15.86 ft, minor flooding; 12,200 cubic feet per secondFeb 9, 2019: 15.13 ft, minor flooding; 11,300 cubic feet per secondJan 14, 2020: 20.62 ft, minor floodingJan 20, 2020: 16.91 ft, minor floodingMar 22, 2020: 15.29 ft, minor flooding; 11,500 cubic feet per secondFeb 2, 2021: 15.37 ft, minor flooding; 11,600 cubic feet per secondMay 8, 2022: 22.72 ft, moderate flooding; 23,700 cubic feet per secondMay 24, 2022: 18.18 ft, minor flooding; 15,200 cubic feet per secondMar 6, 2023: 17.29 ft, minor flooding; 14,100 cubic feet per secondMar 30, 2023: 18.55 ft, minor flooding; 15,700 cubic feet per secondAug 5, 2023: 19.60 ft, minor flooding; 17,300 cubic feet per secondApr 4, 2024: 15.14 ft, minor flooding; 11,400 cubic feet per secondNov 7, 2024: 19.13 ft, minor flooding; 16,500 cubic feet per secondApr 7, 2025: 21.30 ft, minor flooding; 20,700 cubic feet per secondApr 22, 2025: 15.35 ft, minor flooding; 11,600 cubic feet per second Highest, 34.31 ft, Dec 29, 2015 192019401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Bourbeuse River at Union 1910s: 1 1920s: 8 1930s: 6 1940s: 8 1950s: 2 1960s: 6 1970s: 7 1980s: 11 1990s: 9 2000s: 19 19 2010s: 16 2020s: 13 1910s1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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.
  3. 6 crests measured on an earlier gauge datum are left out: 28.50 ft on Aug 22, 1915; 21.00 ft on Feb 1, 1916; 22.30 ft on Oct 30, 1919; 23.23 ft on Jun 13, 1938; 16.60 ft on Nov 16, 1972; 17.20 ft on Feb 25, 1975.

Highest crests

The 50 highest of 132 listed crests.

Highest listed crests, Bourbeuse River at Union
1Dec 29, 201534.31+19.31Major64,000
2Dec 5, 198233.80+18.80Major73,300
3May 2, 201729.38+14.38Major43,800
4Apr 13, 199427.77+12.77Major42,000
5Jul 9, 199326.37+11.37Major36,700
6Mar 21, 200825.89+10.89Moderate36,900
7May 7, 200024.53+9.53Moderate31,800
8Jul 1, 195724.44+9.44Moderate33,100
9Jan 7, 200523.89+8.89Moderate29,700
10May 20, 199523.54+8.54Moderate27,200
11Jun 10, 194523.10+8.10Moderate28,500
12May 1, 199622.95+7.95Moderate25,700
13May 8, 202222.72+7.72Moderate23,700
14Apr 14, 197922.70+7.70Moderate28,200
15Jun 3, 201322.12+7.12Moderate21,700
16Apr 3, 192722.10+7.10Moderate22,500
17Apr 29, 194722.10+7.10Moderate25,100
18Dec 29, 194222.00+7.00Moderate24,100
19Nov 2, 200921.86+6.86Minor24,600
20Sep 17, 200821.71+6.71Minor24,200
21Feb 25, 198521.57+6.57Minor25,600
22Apr 7, 202521.30+6.30Minor20,700
23Apr 27, 197521.26+6.26Minor24,000
24Nov 21, 198521.06+6.06Minor24,400
25Jun 28, 194221.00+6.00Minor21,100
26Jun 20, 198521.00+6.00Minor—
27Jun 22, 201520.92+5.92Minor20,900
28May 3, 198320.90+5.90Minor—
29May 6, 201720.83+5.83Minor19,700
30Jan 14, 202020.62+5.62Minor—
31May 16, 193320.55+5.55Minor18,300
32Nov 17, 199320.30+5.30Minor—
33Jun 7, 199820.21+5.21Minor19,700
34May 9, 196120.19+5.19Minor20,200
35Apr 21, 194120.09+5.09Minor18,700
36Oct 14, 194920.05+5.05Minor20,200
37Apr 7, 192820.00+5.00Minor17,100
38Jul 15, 195119.79+4.79Minor19,800
39Nov 20, 201519.74+4.74Minor19,200
40May 21, 198119.65+4.65Minor20,100
41Feb 6, 198619.60+4.60Minor—
42Aug 5, 202319.60+4.60Minor17,300
43Oct 4, 198619.50+4.50Minor20,300
44Feb 1, 196919.34+4.34Minor19,300
45May 11, 200919.14+4.14Minor18,300
46Nov 7, 202419.13+4.13Minor16,500
47Apr 6, 201419.02+4.02Minor17,600
48Jun 23, 193519.00+4.00Minor15,400
49Apr 30, 191818.70+3.70Minor15,700
50Apr 18, 199118.59+3.59Minor17,700

The worst floods along the Bourbeuse River

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

December 29, 2015: 34.31 ft here, major flooding

  • High GateMO · Dec 27, 2015 · 22.40 ft · Moderate

December 5, 1982: 33.80 ft here, major flooding

  • High GateMO · Dec 3, 1982 · 23.65 ft · Moderate

May 2, 2017: 29.38 ft here, major flooding

  • High GateMO · Apr 30, 2017 · 21.66 ft · Moderate

Gauges on the Bourbeuse River

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

Flood gauges on the Bourbeuse River
High GateMO17.025.00 ft, Jun 30, 19570
Union this gaugeMO15.034.31 ft, Dec 29, 20155

Other gauges in Franklin County

Flood gauges in Franklin County
Washington20.035.40 ft, Jul 31, 19935

Franklin County: every hazard · River floods across the country · Missouri

NOAA National Water Prediction Service, gauge UNNM7, 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.