Search
Menu

Explore

Hazards

Analysis

Rankings

Reference

Rock River at Newville

Highest listed crest 8.51 ftFlood stage 6.5 ft17 crests since 2012

The Rock River at Newville crested at major flood stage 1 time among the 17 crests the National Weather Service lists from 2012 to 2026. The highest, 8.51 ft on April 23, 2013, was major flooding, 2.01 feet above flood stage. 13 other gauges on the Rock River crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest
8.51 ft
April 23, 2013
Flood stage
6.5 ft
Major flooding from 8.0 ft
Crests at major
1
64th of 143 gauges in Wisconsin
Most recent flood crest
April 25, 2026
7.61 ft, moderate flooding
Location
Rock County
Near Janesville (10.0 mi), Fort Atkinson (11.0 mi), Stoughton (12.1 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 Newville
Action stage5.54Apr 20, 2017The level at which the NWS or its partners begin to take action
Flood stage (minor)6.55Jul 16, 2024Minimal or no property damage, but possibly some public threat
Moderate flood stage7.54Apr 25, 2026Some inundation of structures and roads near the stream
Major flood stage8.01Apr 23, 2013Extensive inundation of structures and roads

Every listed crest

17 crests from 2012 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Rock River at Newville, 2012 to 2026 456789ft Flood stage 6.5 ftMajor 8.0 ft May 15, 2012: 4.54 ft, below flood stage; 5,360 cubic feet per secondApr 17, 2013: 7.99 ft, moderate flooding; 11,400 cubic feet per secondApr 23, 2013: 8.51 ft, major floodingMay 11, 2014: 5.51 ft, action stage; 8,020 cubic feet per secondJul 9, 2014: 5.85 ft, action stageApr 18, 2015: 5.00 ft, below flood stage; 4,940 cubic feet per secondDec 21, 2015: 5.04 ft, below flood stageApr 3, 2016: 5.62 ft, action stage; 7,180 cubic feet per secondApr 20, 2017: 6.17 ft, action stage; 8,000 cubic feet per secondMay 20, 2018: 6.61 ft, minor floodingSep 12, 2018: 7.79 ft, moderate flooding; 9,280 cubic feet per secondOct 15, 2018: 7.26 ft, minor flooding; 7,480 cubic feet per secondOct 20, 2018: 7.25 ft, minor flooding; 9,740 cubic feet per secondMar 25, 2019: 7.60 ft, moderate flooding; 8,170 cubic feet per secondOct 15, 2019: 7.14 ft, minor flooding; 7,510 cubic feet per secondJul 16, 2024: 6.56 ft, minor floodingApr 25, 2026: 7.61 ft, moderate flooding Highest, 8.51 ft, Apr 23, 2013 201520202025

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Rock River at Newville 2010s: 8 8 2020s: 2 2010s2020s
  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 Newville
1Apr 23, 20138.51+2.01Major—
2Apr 17, 20137.99+1.49Moderate11,400
3Sep 12, 20187.79+1.29Moderate9,280
4Apr 25, 20267.61+1.11Moderate—
5Mar 25, 20197.60+1.10Moderate8,170
6Oct 15, 20187.26+0.76Minor7,480
7Oct 20, 20187.25+0.75Minor9,740
8Oct 15, 20197.14+0.64Minor7,510
9May 20, 20186.61+0.11Minor—
10Jul 16, 20246.56+0.06Minor—
11Apr 20, 20176.17−0.33Action8,000
12Jul 9, 20145.85−0.65Action—
13Apr 3, 20165.62−0.88Action7,180
14May 11, 20145.51−0.99Action8,020
15Dec 21, 20155.04−1.46Below flood stage—
16Apr 18, 20155.00−1.50Below flood stage4,940
17May 15, 20124.54−1.96Below flood stage5,360

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.

April 23, 2013: 8.51 ft here, major 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
  • 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
  • Lebanon-3 E-Hwy MM bridgeWI · Apr 21, 2013 · 12.54 ft · Moderate
  • JeffersonWI · Apr 20, 2013 · 12.31 ft · Moderate

April 17, 2013: 7.99 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
  • 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
  • Lebanon-3 E-Hwy MM bridgeWI · Apr 21, 2013 · 12.54 ft · Moderate
  • JeffersonWI · Apr 20, 2013 · 12.31 ft · Moderate

September 12, 2018: 7.79 ft here, moderate flooding

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 bridgeWI10.014.01 ft, Jun 15, 20081
MolineIL12.016.53 ft, Apr 22, 201334
Newville this gaugeWI6.58.51 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 Rock County

Flood gauges in Rock County
Afton9.013.51 ft, Jun 21, 20083
Beloit7.513.00 ft, Apr 21, 19731
Beloit-3 NE9.014.20 ft, Apr 21, 19731
Clinton8.015.30 ft, Apr 21, 19732
Fulton10.012.07 ft, Jun 26, 20131

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

NOAA National Water Prediction Service, gauge NVEW3, 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.