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Visit https://www.weather.gov/owp/operations for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

Weather Forecast Office Milwaukee/Sullivan, WI

North Central River Forecast Center

Hydrograph

River at a Glance

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Inundation
Mapping

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About this graph

Tabular Data (UTC)

Tabular Data (CDT)

Datum: NGVD29

Metadata

NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Rock River at Jefferson are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet)

Major Flood Stage:	13
Moderate Flood Stage:	11
Flood Stage:	10
Action Stage:	8
Low Stage (in feet):	-9999

Historic Crests
(1) 15.64 ft on 06/19/2008
(2) 12.84 ft on 04/02/1979
(3) 12.31 ft on 04/20/2013
(4) 12.29 ft on 04/22/1993
(5) 11.72 ft on 09/08/2018
(6) 11.51 ft on 06/02/2004
(7) 11.50 ft on 03/16/2019
(8) 11.35 ft on 04/14/2008
(9) 11.01 ft on 07/27/2010
(10) 11.00 ft on 10/12/2019 (P)
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 11.00 ft on 10/12/2019 (P)
(2) 11.50 ft on 03/16/2019
(3) 10.64 ft on 10/13/2018
(4) 11.72 ft on 09/08/2018
(5) 8.53 ft on 01/28/2017
(6) 7.78 ft on 12/18/2015
(7) 7.92 ft on 04/15/2015
(8) 9.17 ft on 07/03/2014
(9) 12.31 ft on 04/20/2013
(10) 9.70 ft on 03/27/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.74 ft on 08/18/1988
(2) 2.74 ft on 07/11/2012
(3) 2.78 ft on 09/11/2003
(4) 2.82 ft on 09/23/2005
(5) 2.88 ft on 09/27/2012
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.

Show FEMA's National Flood Hazard Layers

Zoom Level:16

	Gauge Location	Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
15	Floodwaters cut the City of Jefferson in half. The Main Street and Wisconsin Drive bridges are closed to traffic due to flooding around the bridges. Main St and Hwy 26 intersection closed. S Center Ave near river flooded. Riverview Dr flooded.
12	Riverview Drive is closed due to floodwaters on the road. The Tensfeldt Park boat launch is closed. Intersection of S Main St and E Dane St is closed, and S Center Ave. Floodwaters affect highway K between Jefferson and Fort Atkinson. River's Edge Park flooded.
11.8	Floodwaters affect Highway K between Jefferson and Fort Atkinson. Floodwaters affect some low lying residences and businesses in Jefferson. Water on road at Hwy 26 (Main St) and Hwy N (E Dane St) and S Center Ave. Riverview Drive near the wastewater plant is flooded and closed.
11.3	Floodwaters affect low lying areas of residential and business property in Jefferson. Water approaches the intersection of Highway 26 (Main St) and County Road N (E Dane St). S Center Ave near the river flooded and Riverview Drive near the wastewater plant flooded. Park is flooded. The retention pond at S Main St and E Dane St is full.
10	Water affects low lying areas of residential property in the City of Jefferson. Rock River Park and boat launch is affected north of town near Hwy B.
9.3	There is minor lowland flooding. A stage of 9.3 feet is about a 50 percent flood meaning there is a 50 percent chance in any given year of the river reaching this level.
8	Minor lowland flooding occurs.
Photos (1) Rock River flooding in Jefferson, WI April 2013 (2) Aerial photo looking north-Rock River at Jefferson, WI (3) Aerial photo looking east-Rock River at Jefferson, WI

About This Location

Latitude: 42.996111° N, Longitude: 88.806944° W, Horizontal Datum: NAD27

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	10 ft	Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum	Elevation (gauge height = 0)	Elevation (gauge height = flood stage)	Elevation information source
NAVD88	Not Available	Not Available	Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29	772.97 ft	782.97 ft	Older USGS topographic maps, NGVD29 benchmarks
MSL	Not Available	Not Available	Older USGS topographic maps, MSL benchmarks
Other	Not Available	Not Available

Current/Historical Observations:

U.S. Geological Survey (USGS) Data and Site Info for Jefferson

Additional Information

How low could the river get?

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Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information

National Weather Service
Milwaukee/Sullivan Weather Forecast Office
N3533 Hardscrabble Road
Dousman, WI 53118
(262) 965-2074
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Page last modified: 2-Nov-2020 7:29 PM

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