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Sugar River at Brodhead

Highest listed crest 11.40 ftFlood stage 5.0 ft124 crests since 1914

The Sugar River at Brodhead crested at major flood stage 4 times among the 124 crests the National Weather Service lists from 1914 to 2026. The highest, 11.40 ft on September 13, 1915, was major flooding, 6.40 feet above flood stage.

The gauge

Highest listed crest
11.40 ft
September 13, 1915; 14,800 cubic feet per second
Flood stage
5.0 ft
Major flooding from 10.0 ft
Crests at major
4
21st of 143 gauges in Wisconsin
Most recent flood crest
April 18, 2026
8.26 ft, moderate flooding
Location
Green County
Near Monroe (12.2 mi)

Flood stages

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

Flood categories, Sugar River at Brodhead
Action stage4.511Mar 12, 2021The level at which the NWS or its partners begin to take action
Flood stage (minor)5.067Jul 16, 2024Minimal or no property damage, but possibly some public threat
Moderate flood stage8.033Apr 18, 2026Some inundation of structures and roads near the stream
Major flood stage10.04Mar 15, 2019Extensive inundation of structures and roads

Every listed crest

124 crests from 1914 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Sugar River at Brodhead, 1914 to 2026 24681012ft Flood stage 5.0 ftMajor 10.0 ft Sep 15, 1914: 8.98 ft, moderate flooding; 7,670 cubic feet per secondSep 13, 1915: 11.40 ft, major flooding; 14,800 cubic feet per secondMar 26, 1916: 9.30 ft, moderate flooding; 8,500 cubic feet per secondJun 13, 1917: 7.20 ft, minor flooding; 3,310 cubic feet per secondMar 14, 1918: 8.27 ft, moderate flooding; 5,900 cubic feet per secondMar 16, 1919: 9.20 ft, moderate flooding; 9,100 cubic feet per secondMar 12, 1920: 6.50 ft, minor flooding; 2,890 cubic feet per secondFeb 23, 1922: 9.78 ft, moderate flooding; 10,000 cubic feet per secondApr 4, 1923: 8.70 ft, moderate flooding; 7,580 cubic feet per secondJun 26, 1924: 5.70 ft, minor flooding; 2,380 cubic feet per secondFeb 10, 1925: 5.40 ft, minor flooding; 2,150 cubic feet per secondMar 20, 1926: 5.30 ft, minor flooding; 2,140 cubic feet per secondFeb 6, 1927: 7.70 ft, minor flooding; 4,650 cubic feet per secondMar 13, 1928: 7.60 ft, minor flooding; 4,440 cubic feet per secondMar 14, 1929: 10.00 ft, major flooding; 11,400 cubic feet per secondFeb 21, 1930: 7.40 ft, minor flooding; 4,080 cubic feet per secondMar 27, 1932: 7.38 ft, minor flooding; 4,350 cubic feet per secondMar 31, 1933: 9.06 ft, moderate flooding; 7,940 cubic feet per secondMar 12, 1935: 5.58 ft, minor flooding; 2,180 cubic feet per secondMar 12, 1936: 6.20 ft, minor flooding; 2,630 cubic feet per secondMar 5, 1937: 10.07 ft, major flooding; 8,780 cubic feet per secondFeb 6, 1938: 9.90 ft, moderate flooding; 7,290 cubic feet per secondJan 7, 1939: 6.12 ft, minor flooding; 2,540 cubic feet per secondAug 26, 1940: 7.80 ft, minor flooding; 4,480 cubic feet per secondMar 23, 1941: 6.60 ft, minor flooding; 2,990 cubic feet per secondAug 4, 1942: 4.52 ft, action stage; 1,530 cubic feet per secondMar 16, 1943: 9.86 ft, moderate flooding; 7,000 cubic feet per secondMar 15, 1944: 7.92 ft, minor flooding; 4,640 cubic feet per secondJan 6, 1946: 9.10 ft, moderate flooding; 7,640 cubic feet per secondJun 15, 1947: 4.84 ft, action stage; 1,830 cubic feet per secondFeb 28, 1948: 9.80 ft, moderate flooding; 10,000 cubic feet per secondMar 6, 1949: 7.63 ft, minor flooding; 4,380 cubic feet per secondJul 18, 1950: 8.21 ft, moderate flooding; 5,700 cubic feet per secondFeb 28, 1951: 5.68 ft, minor flooding; 2,400 cubic feet per secondMar 19, 1952: 7.52 ft, minor flooding; 4,380 cubic feet per secondFeb 21, 1953: 9.30 ft, moderate flooding; 8,500 cubic feet per secondJul 9, 1954: 4.55 ft, action stage; 1,760 cubic feet per secondFeb 21, 1955: 7.51 ft, minor flooding; 4,400 cubic feet per secondFeb 27, 1958: 6.22 ft, minor flooding; 2,830 cubic feet per secondApr 2, 1959: 8.80 ft, moderate flooding; 7,150 cubic feet per secondMar 31, 1960: 9.72 ft, moderate flooding; 10,200 cubic feet per secondMar 26, 1961: 6.74 ft, minor flooding; 3,340 cubic feet per secondMar 26, 1962: 6.30 ft, minor flooding; 2,810 cubic feet per secondMar 18, 1963: 7.65 ft, minor flooding; 4,800 cubic feet per secondMar 3, 1965: 8.24 ft, moderate flooding; 5,500 cubic feet per secondFeb 10, 1966: 7.98 ft, minor flooding; 5,260 cubic feet per secondMar 26, 1967: 6.69 ft, minor flooding; 3,200 cubic feet per secondJun 30, 1969: 7.21 ft, minor flooding; 2,980 cubic feet per secondFeb 22, 1971: 6.66 ft, minor flooding; 2,100 cubic feet per secondMar 13, 1972: 5.23 ft, minor flooding; 1,720 cubic feet per secondMar 8, 1973: 7.42 ft, minor flooding; 3,840 cubic feet per secondMar 4, 1974: 8.13 ft, moderate floodingMar 22, 1975: 9.76 ft, moderate flooding; 8,530 cubic feet per secondMar 7, 1976: 6.43 ft, minor flooding; 2,480 cubic feet per secondFeb 26, 1977: 5.05 ft, minor flooding; 1,400 cubic feet per secondJul 2, 1978: 7.74 ft, minor flooding; 3,860 cubic feet per secondMar 21, 1979: 6.61 ft, minor flooding; 2,720 cubic feet per secondJan 18, 1980: 4.51 ft, action stage; 1,540 cubic feet per secondFeb 24, 1981: 4.73 ft, action stage; 1,630 cubic feet per secondMar 14, 1982: 7.89 ft, minor flooding; 3,940 cubic feet per secondApr 4, 1983: 5.19 ft, minor flooding; 1,880 cubic feet per secondJul 13, 1984: 5.60 ft, minor flooding; 2,160 cubic feet per secondFeb 24, 1985: 8.13 ft, moderate floodingMar 20, 1986: 5.42 ft, minor flooding; 2,010 cubic feet per secondOct 1, 1986: 4.73 ft, action stage; 1,490 cubic feet per secondFeb 2, 1988: 5.27 ft, minor flooding; 1,920 cubic feet per secondMar 13, 1989: 6.57 ft, minor flooding; 2,740 cubic feet per secondMar 11, 1990: 5.61 ft, minor flooding; 2,090 cubic feet per secondMar 4, 1991: 6.24 ft, minor flooding; 2,450 cubic feet per secondDec 2, 1991: 3.74 ft, below flood stage; 1,210 cubic feet per secondMar 25, 1993: 8.01 ft, moderate flooding; 4,310 cubic feet per secondFeb 22, 1994: 8.36 ft, moderate flooding; 3,500 cubic feet per secondMay 11, 1995: 3.56 ft, below flood stage; 1,060 cubic feet per secondJul 18, 1996: 8.91 ft, moderate flooding; 6,020 cubic feet per secondFeb 21, 1997: 8.45 ft, moderate flooding; 4,840 cubic feet per secondApr 2, 1998: 6.29 ft, minor flooding; 2,380 cubic feet per secondMay 19, 1999: 8.13 ft, moderate flooding; 4,510 cubic feet per secondJun 2, 2000: 9.10 ft, moderate flooding; 6,240 cubic feet per secondJun 12, 2001: 4.16 ft, below flood stage; 1,300 cubic feet per secondJun 5, 2002: 4.41 ft, below flood stage; 1,410 cubic feet per secondMay 9, 2003: 2.72 ft, below flood stage; 742 cubic feet per secondMay 25, 2004: 8.30 ft, moderate flooding; 4,360 cubic feet per secondFeb 16, 2005: 7.06 ft, minor flooding; 2,850 cubic feet per secondMar 13, 2006: 2.74 ft, below flood stage; 779 cubic feet per secondMar 15, 2007: 5.38 ft, minor floodingApr 6, 2007: 4.89 ft, action stage; 1,625 cubic feet per secondAug 8, 2007: 7.13 ft, minor floodingAug 23, 2007: 9.02 ft, moderate flooding; 5,340 cubic feet per secondJan 11, 2008: 5.46 ft, minor floodingMar 16, 2008: 5.52 ft, minor floodingApr 13, 2008: 7.70 ft, minor floodingJun 15, 2008: 7.88 ft, minor flooding; 3,540 cubic feet per secondJul 13, 2008: 7.04 ft, minor floodingFeb 12, 2009: 5.03 ft, minor floodingMar 10, 2009: 6.90 ft, minor flooding; 2,840 cubic feet per secondApr 28, 2009: 5.71 ft, minor floodingMar 13, 2010: 5.68 ft, minor floodingApr 10, 2010: 5.25 ft, minor floodingJun 19, 2010: 4.51 ft, action stageJul 26, 2010: 5.94 ft, minor flooding; 2,280 cubic feet per secondFeb 21, 2011: 4.74 ft, action stage; 1,670 cubic feet per secondNov 11, 2011: 2.90 ft, below flood stage; 938 cubic feet per secondJun 28, 2013: 8.86 ft, moderate flooding; 4,880 cubic feet per secondJun 23, 2014: 5.49 ft, minor flooding; 2,080 cubic feet per secondMar 12, 2015: 4.09 ft, below flood stage; 1,370 cubic feet per secondDec 17, 2015: 4.82 ft, action stage; 1,592 cubic feet per secondJun 30, 2017: 5.28 ft, minor flooding; 1,930 cubic feet per secondJul 15, 2017: 5.11 ft, minor flooding; 1,850 cubic feet per secondJul 23, 2017: 8.72 ft, moderate flooding; 4,540 cubic feet per secondFeb 22, 2018: 9.76 ft, moderate flooding; 8,000 cubic feet per secondJun 22, 2018: 5.02 ft, minor flooding; 1,810 cubic feet per secondAug 23, 2018: 9.29 ft, moderate flooding; 6,225 cubic feet per secondSep 6, 2018: 6.60 ft, minor flooding; 2,673 cubic feet per secondSep 22, 2018: 6.26 ft, minor flooding; 2,479 cubic feet per secondOct 4, 2018: 8.63 ft, moderate flooding; 4,389 cubic feet per secondFeb 7, 2019: 5.65 ft, minor flooding; 2,131 cubic feet per secondMar 15, 2019: 10.20 ft, major flooding; 9,340 cubic feet per secondOct 4, 2019: 7.53 ft, minor flooding; 3,270 cubic feet per secondMar 12, 2021: 4.85 ft, action stage; 1,710 cubic feet per secondSep 13, 2022: 3.89 ft, below flood stage; 1,290 cubic feet per secondMar 2, 2023: 5.18 ft, minor flooding; 1,880 cubic feet per secondApr 5, 2024: 6.39 ft, minor flooding; 2,400 cubic feet per secondJul 16, 2024: 7.72 ft, minor flooding; 3,200 cubic feet per secondApr 18, 2026: 8.26 ft, moderate flooding; 3,763 cubic feet per second Highest, 11.40 ft, Sep 13, 1915 192019401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Sugar River at Brodhead 1910s: 6 1920s: 9 1930s: 8 1940s: 7 1950s: 7 1960s: 8 1970s: 9 1980s: 7 1990s: 8 2000s: 14 2010s: 17 17 2020s: 4 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.

Highest crests

The 50 highest of 124 listed crests.

Highest listed crests, Sugar River at Brodhead
1Sep 13, 191511.40+6.40Major14,800
2Mar 15, 201910.20+5.20Major9,340
3Mar 5, 193710.07+5.07Major8,780
4Mar 14, 192910.00+5.00Major11,400
5Feb 6, 19389.90+4.90Moderate7,290
6Mar 16, 19439.86+4.86Moderate7,000
7Feb 28, 19489.80+4.80Moderate10,000
8Feb 23, 19229.78+4.78Moderate10,000
9Mar 22, 19759.76+4.76Moderate8,530
10Feb 22, 20189.76+4.76Moderate8,000
11Mar 31, 19609.72+4.72Moderate10,200
12Mar 26, 19169.30+4.30Moderate8,500
13Feb 21, 19539.30+4.30Moderate8,500
14Aug 23, 20189.29+4.29Moderate6,225
15Mar 16, 19199.20+4.20Moderate9,100
16Jan 6, 19469.10+4.10Moderate7,640
17Jun 2, 20009.10+4.10Moderate6,240
18Mar 31, 19339.06+4.06Moderate7,940
19Aug 23, 20079.02+4.02Moderate5,340
20Sep 15, 19148.98+3.98Moderate7,670
21Jul 18, 19968.91+3.91Moderate6,020
22Jun 28, 20138.86+3.86Moderate4,880
23Apr 2, 19598.80+3.80Moderate7,150
24Jul 23, 20178.72+3.72Moderate4,540
25Apr 4, 19238.70+3.70Moderate7,580
26Oct 4, 20188.63+3.63Moderate4,389
27Feb 21, 19978.45+3.45Moderate4,840
28Feb 22, 19948.36+3.36Moderate3,500
29May 25, 20048.30+3.30Moderate4,360
30Mar 14, 19188.27+3.27Moderate5,900
31Apr 18, 20268.26+3.26Moderate3,763
32Mar 3, 19658.24+3.24Moderate5,500
33Jul 18, 19508.21+3.21Moderate5,700
34Mar 4, 19748.13+3.13Moderate—
35Feb 24, 19858.13+3.13Moderate—
36May 19, 19998.13+3.13Moderate4,510
37Mar 25, 19938.01+3.01Moderate4,310
38Feb 10, 19667.98+2.98Minor5,260
39Mar 15, 19447.92+2.92Minor4,640
40Mar 14, 19827.89+2.89Minor3,940
41Jun 15, 20087.88+2.88Minor3,540
42Aug 26, 19407.80+2.80Minor4,480
43Jul 2, 19787.74+2.74Minor3,860
44Jul 16, 20247.72+2.72Minor3,200
45Feb 6, 19277.70+2.70Minor4,650
46Apr 13, 20087.70+2.70Minor—
47Mar 18, 19637.65+2.65Minor4,800
48Mar 6, 19497.63+2.63Minor4,380
49Mar 13, 19287.60+2.60Minor4,440
50Oct 4, 20197.53+2.53Minor3,270

The worst floods along the Sugar River

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

March 15, 2019: 10.20 ft here, major flooding

  • AlbanyWI · Mar 15, 2019 · 13.73 ft · Moderate

Gauges on the Sugar River

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

Flood gauges on the Sugar River
AlbanyWI12.013.88 ft, Feb 21, 20180
Brodhead this gaugeWI5.011.40 ft, Sep 13, 19154

Other gauges in Green County

Flood gauges in Green County
Martintown13.522.41 ft, Mar 16, 20192
Albany12.013.88 ft, Feb 21, 20180

Green County: every hazard · River floods across the country · Wisconsin

NOAA National Water Prediction Service, gauge BROW3, 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.