Search
Menu

Explore

Hazards

Analysis

Rankings

Reference

Menomonee River at Menomonee Falls

Highest listed crest 8.52 ftFlood stage 7.5 ft32 crests since 1981

The Menomonee River at Menomonee Falls crested above flood stage 5 times among the 32 crests the National Weather Service lists from 1981 to 2026. The highest, 8.52 ft on August 10, 2025, was moderate flooding, 1.02 feet above flood stage. 1 other gauge on the Menomonee River crested above flood stage within a week of it.

The gauge

Highest listed crest
8.52 ft
August 10, 2025; 1,260 cubic feet per second
Flood stage
7.5 ft
Major flooding from 10.0 ft
Crests at major
0
5 above flood stage
Most recent flood crest
April 15, 2026
7.98 ft, minor flooding
Location
Waukesha County
Near Menomonee Falls (1.3 mi), Germantown (4.4 mi), Mequon (5.2 mi)

Flood stages

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

Flood categories, Menomonee River at Menomonee Falls
Action stage6.59Jun 28, 2017The level at which the NWS or its partners begin to take action
Flood stage (minor)7.54Apr 15, 2026Minimal or no property damage, but possibly some public threat
Moderate flood stage8.51Aug 10, 2025Some inundation of structures and roads near the stream
Major flood stage10.00—Extensive inundation of structures and roads

Every listed crest

32 crests from 1981 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Menomonee River at Menomonee Falls, 1981 to 2026 46810ft Flood stage 7.5 ftMajor 10.0 ft Jul 13, 1981: 6.57 ft, action stage; 1,010 cubic feet per secondSep 11, 1986: 6.49 ft, below flood stage; 1,440 cubic feet per secondJun 21, 1997: 8.31 ft, minor flooding; 1,500 cubic feet per secondJul 21, 1999: 6.97 ft, action stage; 900 cubic feet per secondMay 17, 2000: 7.01 ft, action stage; 916 cubic feet per secondFeb 9, 2001: 6.75 ft, action stage; 670 cubic feet per secondMay 23, 2004: 7.56 ft, minor flooding; 1,090 cubic feet per secondAug 23, 2007: 6.96 ft, action stage; 783 cubic feet per secondApr 11, 2008: 6.26 ft, below flood stageJun 12, 2008: 7.43 ft, action stage; 1,020 cubic feet per secondApr 28, 2009: 5.77 ft, below flood stageMar 14, 2010: 5.26 ft, below flood stageJul 17, 2010: 5.86 ft, below flood stageJul 22, 2010: 8.12 ft, minor flooding; 1,450 cubic feet per secondFeb 18, 2011: 4.75 ft, below flood stageMar 23, 2011: 6.14 ft, below flood stageJul 27, 2011: 6.56 ft, action stage; 613 cubic feet per secondApr 11, 2013: 6.43 ft, below flood stage; 564 cubic feet per secondMar 17, 2014: 5.90 ft, below flood stageApr 15, 2014: 5.76 ft, below flood stageJun 18, 2014: 6.61 ft, action stage; 663 cubic feet per secondApr 11, 2015: 6.28 ft, below flood stage; 511 cubic feet per secondJun 12, 2015: 4.85 ft, below flood stageJun 28, 2017: 6.94 ft, action stage; 773 cubic feet per secondFeb 20, 2018: 6.32 ft, below flood stageAug 21, 2018: 6.29 ft, below flood stage; 508 cubic feet per secondMar 16, 2019: 6.00 ft, below flood stage; 423 cubic feet per secondMar 28, 2020: 6.32 ft, below flood stage; 514 cubic feet per secondAug 8, 2021: 6.37 ft, below flood stage; 521 cubic feet per secondSep 13, 2022: 6.40 ft, below flood stage; 532 cubic feet per secondAug 10, 2025: 8.52 ft, moderate flooding; 1,260 cubic feet per secondApr 15, 2026: 7.98 ft, minor flooding; 961 cubic feet per second Highest, 8.52 ft, Aug 10, 2025 1990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Menomonee River at Menomonee Falls 1980s: 0 1990s: 1 2000s: 1 2010s: 1 2020s: 2 2 1980s1990s2000s2010s2020s
  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

Highest listed crests, Menomonee River at Menomonee Falls
1Aug 10, 20258.52+1.02Moderate1,260
2Jun 21, 19978.31+0.81Minor1,500
3Jul 22, 20108.12+0.62Minor1,450
4Apr 15, 20267.98+0.48Minor961
5May 23, 20047.56+0.06Minor1,090
6Jun 12, 20087.43−0.07Action1,020
7May 17, 20007.01−0.49Action916
8Jul 21, 19996.97−0.53Action900
9Aug 23, 20076.96−0.54Action783
10Jun 28, 20176.94−0.56Action773
11Feb 9, 20016.75−0.75Action670
12Jun 18, 20146.61−0.89Action663
13Jul 13, 19816.57−0.93Action1,010
14Jul 27, 20116.56−0.94Action613
15Sep 11, 19866.49−1.01Below flood stage1,440
16Apr 11, 20136.43−1.07Below flood stage564
17Sep 13, 20226.40−1.10Below flood stage532
18Aug 8, 20216.37−1.13Below flood stage521
19Feb 20, 20186.32−1.18Below flood stage—
20Mar 28, 20206.32−1.18Below flood stage514
21Aug 21, 20186.29−1.21Below flood stage508
22Apr 11, 20156.28−1.22Below flood stage511
23Apr 11, 20086.26−1.24Below flood stage—
24Mar 23, 20116.14−1.36Below flood stage—
25Mar 16, 20196.00−1.50Below flood stage423
26Mar 17, 20145.90−1.60Below flood stage—
27Jul 17, 20105.86−1.64Below flood stage—
28Apr 28, 20095.77−1.73Below flood stage—
29Apr 15, 20145.76−1.74Below flood stage—
30Mar 14, 20105.26−2.24Below flood stage—
31Jun 12, 20154.85−2.65Below flood stage—
32Feb 18, 20114.75−2.75Below flood stage—

The worst floods along the Menomonee River

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

August 10, 2025: 8.52 ft here, moderate flooding

  • WauwatosaWI · Aug 10, 2025 · 14.54 ft · Minor

June 21, 1997: 8.31 ft here, minor flooding

  • WauwatosaWI · Jun 21, 1997 · 18.63 ft · Major · its highest

July 22, 2010: 8.12 ft here, minor flooding

  • WauwatosaWI · Jul 22, 2010 · 14.65 ft · Minor

Gauges on the Menomonee River

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

Flood gauges on the Menomonee River
Menomonee Falls this gaugeWI7.58.52 ft, Aug 10, 20250
WauwatosaWI11.018.63 ft, Jun 21, 19972

Other gauges in Waukesha County

Flood gauges in Waukesha County
Waukesha6.08.85 ft, Jun 9, 20080

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

NOAA National Water Prediction Service, gauge MFSW3, 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.