Headline:
Flood Warning issued April 28 at 10:43AM CDT until May 5 at 1:00AM CDT by NWS Milwaukee/Sullivan WI
Event:
Flood Warning
Urgency:
Immediate
Effective:
April 28, 2026 - 8:43am
Expires:
April 28, 2026 - 8:45pm
Description:
...The Flood Warning is extended for the following rivers in
Wisconsin...
Rock River Near Lake Koshkonong affecting Rock and Jefferson
Counties.
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.
* WHERE...Rock River near Lake Koshkonong.
* WHEN...Until Tuesday, May 05.
* 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 Tuesday the stage was 11.1 feet.
- Bankfull stage is 9.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 10:00 AM CDT Tuesday was 11.2 feet.
- Forecast...The river is expected to fall below flood stage
Monday evening and continue falling to 9.9 feet Tuesday, May
05.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
11.2 feet on 07/31/2010.
- 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 1045 PM CDT.
Area Description:
Jefferson, WI; Rock, WI
Forcast Office:
NWS Milwaukee/Sullivan WI