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Rock River at Lebanon-3 E-Hwy MM bridge

Highest listed crest 14.01 ftFlood stage 10.0 ft34 crests since 2007

The Rock River at Lebanon-3 E-Hwy MM bridge crested at major flood stage 1 time among the 34 crests the National Weather Service lists from 2007 to 2026. The highest, 14.01 ft on June 15, 2008, was major flooding, 4.01 feet above flood stage. 11 other gauges on the Rock River crested above flood stage within a week of it, 5 at their own highest listed crest.

The gauge

Highest listed crest
14.01 ft
June 15, 2008
Flood stage
10.0 ft
Major flooding from 13.0 ft
Crests at major
1
64th of 143 gauges in Wisconsin
Most recent flood crest
April 20, 2026
12.02 ft, moderate flooding
Location
Dodge County
Near Watertown (9.3 mi), Hartford (10.7 mi), Oconomowoc (11.8 mi)

Flood stages

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

Flood categories, Rock River at Lebanon-3 E-Hwy MM bridge
Action stage9.04Jun 20, 2022The level at which the NWS or its partners begin to take action
Flood stage (minor)10.020Jul 6, 2024Minimal or no property damage, but possibly some public threat
Moderate flood stage11.57Apr 20, 2026Some inundation of structures and roads near the stream
Major flood stage13.01Jun 15, 2008Extensive inundation of structures and roads

Every listed crest

34 crests from 2007 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Rock River at Lebanon-3 E-Hwy MM bridge, 2007 to 2026 810121416ft Flood stage 10.0 ftMajor 13.0 ft Apr 4, 2007: 10.92 ft, minor floodingAug 27, 2007: 10.03 ft, minor floodingJan 14, 2008: 9.84 ft, action stageApr 14, 2008: 11.14 ft, minor floodingJun 15, 2008: 14.01 ft, major floodingMar 12, 2009: 10.68 ft, minor floodingMar 17, 2010: 10.66 ft, minor floodingJul 25, 2010: 10.87 ft, minor floodingFeb 22, 2011: 8.82 ft, below flood stageMar 26, 2011: 10.57 ft, minor floodingMar 19, 2012: 10.32 ft, minor floodingApr 21, 2013: 12.54 ft, moderate floodingApr 17, 2014: 11.56 ft, moderate floodingJul 4, 2014: 12.12 ft, moderate floodingApr 13, 2015: 10.59 ft, minor floodingDec 18, 2015: 10.37 ft, minor floodingApr 11, 2016: 11.43 ft, minor floodingSep 28, 2016: 11.35 ft, minor floodingMar 6, 2017: 10.22 ft, minor floodingMay 4, 2017: 10.42 ft, minor floodingFeb 26, 2018: 9.44 ft, action stageMay 17, 2018: 10.47 ft, minor floodingSep 7, 2018: 12.29 ft, moderate floodingMar 18, 2019: 10.98 ft, minor floodingOct 5, 2019: 12.15 ft, moderate floodingMar 23, 2020: 10.05 ft, minor floodingMar 29, 2021: 8.90 ft, below flood stageApr 11, 2022: 9.70 ft, action stageJun 20, 2022: 9.95 ft, action stageMar 24, 2023: 10.60 ft, minor flooding; 1,740 cubic feet per secondApr 7, 2024: 10.74 ft, minor flooding; 1,807 cubic feet per secondJun 7, 2024: 12.13 ft, moderate flooding; 4,149 cubic feet per secondJul 6, 2024: 10.74 ft, minor flooding; 2,593 cubic feet per secondApr 20, 2026: 12.02 ft, moderate flooding; 3,193 cubic feet per second Highest, 14.01 ft, Jun 15, 2008 2010201520202025

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Rock River at Lebanon-3 E-Hwy MM bridge 2000s: 5 2010s: 17 17 2020s: 6 2000s2010s2020s
  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, Rock River at Lebanon-3 E-Hwy MM bridge
1Jun 15, 200814.01+4.01Major—
2Apr 21, 201312.54+2.54Moderate—
3Sep 7, 201812.29+2.29Moderate—
4Oct 5, 201912.15+2.15Moderate—
5Jun 7, 202412.13+2.13Moderate4,149
6Jul 4, 201412.12+2.12Moderate—
7Apr 20, 202612.02+2.02Moderate3,193
8Apr 17, 201411.56+1.56Moderate—
9Apr 11, 201611.43+1.43Minor—
10Sep 28, 201611.35+1.35Minor—
11Apr 14, 200811.14+1.14Minor—
12Mar 18, 201910.98+0.98Minor—
13Apr 4, 200710.92+0.92Minor—
14Jul 25, 201010.87+0.87Minor—
15Apr 7, 202410.74+0.74Minor1,807
16Jul 6, 202410.74+0.74Minor2,593
17Mar 12, 200910.68+0.68Minor—
18Mar 17, 201010.66+0.66Minor—
19Mar 24, 202310.60+0.60Minor1,740
20Apr 13, 201510.59+0.59Minor—
21Mar 26, 201110.57+0.57Minor—
22May 17, 201810.47+0.47Minor—
23May 4, 201710.42+0.42Minor—
24Dec 18, 201510.37+0.37Minor—
25Mar 19, 201210.32+0.32Minor—
26Mar 6, 201710.22+0.22Minor—
27Mar 23, 202010.05+0.05Minor—
28Aug 27, 200710.03+0.03Minor—
29Jun 20, 20229.95−0.05Action—
30Jan 14, 20089.84−0.16Action—
31Apr 11, 20229.70−0.30Action—
32Feb 26, 20189.44−0.56Action—
33Mar 29, 20218.90−1.10Below flood stage—
34Feb 22, 20118.82−1.18Below flood stage—

The worst floods along the Rock River

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

June 15, 2008: 14.01 ft here, major flooding

  • Fort AtkinsonWI · Jun 15, 2008 · 20.90 ft · Major · its highest
  • JoslinIL · Jun 21, 2008 · 16.61 ft · Major
  • JeffersonWI · Jun 19, 2008 · 15.64 ft · Major · its highest
  • Lake KoshkonongWI · Jun 21, 2008 · 15.13 ft · Major · its highest
  • MolineIL · Jun 17, 2008 · 14.91 ft · Major
  • RocktonIL · Jun 17, 2008 · 14.72 ft · Major
  • Latham ParkIL · Jun 18, 2008 · 14.30 ft · Major
  • AftonWI · Jun 21, 2008 · 13.51 ft · Major · its highest
  • WatertownWI · Jun 13, 2008 · 7.81 ft · Major · its highest
  • ByronIL · Jun 15, 2008 · 14.81 ft · Moderate

April 21, 2013: 12.54 ft here, moderate flooding

  • JoslinIL · Apr 21, 2013 · 19.11 ft · Major
  • Fort AtkinsonWI · Apr 22, 2013 · 18.12 ft · Major
  • ByronIL · Apr 20, 2013 · 17.08 ft · Major
  • MolineIL · Apr 22, 2013 · 16.53 ft · Major · its highest
  • Lake KoshkonongWI · Apr 22, 2013 · 12.35 ft · Major
  • NewvilleWI · Apr 23, 2013 · 8.51 ft · Major · its highest
  • DixonIL · Apr 20, 2013 · 18.16 ft · Moderate
  • RocktonIL · Apr 21, 2013 · 13.46 ft · Moderate
  • Latham ParkIL · Apr 22, 2013 · 12.82 ft · Moderate
  • JeffersonWI · Apr 20, 2013 · 12.31 ft · Moderate

September 7, 2018: 12.29 ft here, moderate flooding

  • Lake KoshkonongWI · Sep 12, 2018 · 11.62 ft · Major
  • Fort AtkinsonWI · Sep 11, 2018 · 17.40 ft · Moderate
  • ByronIL · Sep 5, 2018 · 14.28 ft · Moderate
  • RocktonIL · Sep 9, 2018 · 12.15 ft · Moderate
  • JeffersonWI · Sep 8, 2018 · 11.72 ft · Moderate
  • Latham ParkIL · Sep 9, 2018 · 11.48 ft · Moderate
  • AftonWI · Sep 12, 2018 · 11.20 ft · Moderate
  • NewvilleWI · Sep 12, 2018 · 7.79 ft · Moderate
  • WatertownWI · Sep 9, 2018 · 6.17 ft · Moderate

Gauges on the Rock River

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

Flood gauges on the Rock River
AftonWI9.013.51 ft, Jun 21, 20083
ByronIL13.017.80 ft, Apr 20, 19735
ComoIL12.515.64 ft, Jul 23, 20170
DixonIL16.020.50 ft, Apr 20, 19731
Fort AtkinsonWI16.020.90 ft, Jun 15, 20082
JeffersonWI10.015.64 ft, Jun 19, 20081
Lake KoshkonongWI10.015.13 ft, Jun 21, 20086
Latham ParkIL9.014.70 ft, Mar 26, 19753
Lebanon-3 E-Hwy MM bridge this gaugeWI10.014.01 ft, Jun 15, 20081
MolineIL12.016.53 ft, Apr 22, 201334
NewvilleWI6.58.51 ft, Apr 23, 20131
Rockford (Auburn Street)IL6.010.00 ft, Apr 20, 18811
Rockford (Fordam Dam)IL4.06.50 ft, Apr 20, 18811
RocktonIL10.015.54 ft, Mar 25, 19754
WatertownWI5.57.81 ft, Jun 13, 20082
JoslinIL12.019.24 ft, Jun 7, 200224

Other gauges in Dodge County

Flood gauges in Dodge County
Beaver Dam843.5845.53 ft, Jun 16, 20080

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

NOAA National Water Prediction Service, gauge LEBW3, 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.