Headline:
Flood Warning issued April 20 at 5:00AM CDT until April 23 at 10:00PM CDT by NWS Milwaukee/Sullivan WI
Event:
Flood Warning
Urgency:
Immediate
Effective:
April 20, 2026 - 3:00am
Expires:
April 20, 2026 - 3:00pm
Description:
...The Flood Warning continues for the following rivers in
Wisconsin...Illinois...
Milwaukee River Near Cedarburg affecting Ozaukee County.
Rock River At Newville affecting Rock County.
Rock River Near Lake Koshkonong affecting Jefferson and Rock
Counties.
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 At Watertown affecting Jefferson County.
ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County.
Fox River Near Berlin affecting Green Lake County.
Crawfish River At Milford affecting Jefferson County.
Fox River Lower At Waukesha affecting Waukesha County.
Fox River Lower Near New Munster affecting Lake and Kenosha
Counties.
Pecatonica River At Martintown affecting Green County.
Wisconsin River At Portage affecting Columbia County.
...The Flood Warning is extended for the following rivers in
Illinois...Wisconsin...
Sugar River At Brodhead affecting Winnebago, Rock and Green
Counties.
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast. This approaches the flood of record.
* WHERE...Wisconsin River at Portage.
* WHEN...Until late Thursday evening.
* IMPACTS...At 19.0 feet, There is 1 foot of water over a low
section of County Highway V in Dekorra. Floodwaters affect River
Oaks Road and River Shores Road (Lewiston Township) as well as
numerous roads in the Blackhawk Park area about 3 miles south of
Portage.
* ADDITIONAL DETAILS...
- At 9:00 PM CDT Sunday the stage was 18.9 feet.
- Bankfull stage is 12.7 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:00 PM CDT Sunday was 19.2 feet.
- Forecast...The river is expected to fall below flood stage
Thursday afternoon and continue falling to 15.4 feet Sunday
evening.
- Flood stage is 17.0 feet.
- Flood History...This crest compares to a previous crest of
18.9 feet on 04/18/2023.
- http://www.weather.gov/safety/flood
Instruction:
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Even 6 inches of fast-moving flood water can knock you off your feet
and a depth of 2 feet will float your car. Never try to walk, swim,
or drive through such swift water. If you come upon flood waters,
stop, turn around and go another way.
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov.
The next statement will be issued this afternoon at 500 PM CDT.
Area Description:
Columbia, WI
Forcast Office:
NWS Milwaukee/Sullivan WI