Headline:
Flood Warning issued April 29 at 11:07AM CDT until May 5 at 7:00AM CDT by NWS Milwaukee/Sullivan WI
Event:
Flood Warning
Urgency:
Immediate
Effective:
April 29, 2026 - 9:07am
Expires:
April 29, 2026 - 9:15pm
Description:
...The Flood Warning is extended for the following rivers in
Wisconsin...
Rock River Near Lake Koshkonong affecting Jefferson and Rock
Counties.
...The Flood Warning continues for the following rivers in
Wisconsin...Illinois...
Rock River At Newville affecting Rock County.
Rock River At Fort Atkinson affecting Jefferson County.
Rock River At Afton affecting Winnebago and Rock Counties.
Rock River At Jefferson affecting Jefferson County.
ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County.
Fox River Lower Near New Munster affecting Lake and Kenosha
Counties.
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.
* WHERE...Rock River near Lake Koshkonong.
* WHEN...Until Tuesday morning.
* IMPACTS...At 11.0 feet, In the Town of Lake Koshkonong,
floodwaters affect Vets Lane, Blackhawk Island Road, and Oxbow
Bend Road. There is widespread flooding of roads and docks in the
Town of Koshkonong and Town of Sumner including Vets Lane,
Blackhawk Island Road and Oxbow Bend Road.
* ADDITIONAL DETAILS...
- At 10:00 AM CDT Wednesday the stage was 11.0 feet.
- Bankfull stage is 9.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 10:00 AM CDT Wednesday was 11.1 feet.
- Forecast...The river is expected to fall below flood stage
early Tuesday morning and continue falling to 9.7 feet
Wednesday, May 06.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
11.0 feet on 06/07/2000.
- http://www.weather.gov/safety/flood
Instruction:
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Caution is urged when walking near riverbanks.
Additional information is available at www.weather.gov.
The next statement will be issued this evening at 1115 PM CDT.
Area Description:
Jefferson, WI; Rock, WI
Forcast Office:
NWS Milwaukee/Sullivan WI