Headline:
Flood Warning issued April 20 at 11:14AM CDT until April 22 at 10:00PM CDT by NWS Milwaukee/Sullivan WI
Event:
Flood Warning
Urgency:
Immediate
Effective:
April 20, 2026 - 9:14am
Expires:
April 20, 2026 - 9:15pm
Description:
...The Flood Warning is extended for the following rivers in
Wisconsin...Illinois...
Fox River At Princeton affecting Green Lake County.
Sugar River At Brodhead affecting Green, Rock and Winnebago
Counties.
...The Flood Warning continues for the following rivers in
Wisconsin...Illinois...
Fox River Lower At Waukesha affecting Waukesha County.
Wisconsin River At Portage affecting Columbia County.
Rock River At Newville affecting Rock County.
Rock River Near Lake Koshkonong affecting Rock and Jefferson
Counties.
Rock River At Fort Atkinson affecting Jefferson County.
Rock River At Afton affecting Rock and Winnebago 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 Near New Munster affecting Lake and Kenosha
Counties.
...The Flood Warning is cancelled for the following rivers in
Wisconsin...
Milwaukee River Near Cedarburg affecting Ozaukee County.
Pecatonica River At Martintown affecting Green County.
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast. This approaches the flood of record.
* WHERE...Wisconsin River at Portage.
* WHEN...Until late Wednesday evening.
* IMPACTS...At 18.5 feet, Floodwaters affect River Shores Road about
3 miles upstream of Portage in the Town of Lewiston and River Oaks
Road about 7 miles downstream of Portage in the Town of Dekorra in
Columbia County. Water over Levee Rd and Tritz Rd. There is
widespread flooding of roads in the Blackhawk Park Area including
West Lake Road...Blackhawk Road and Wood Street. The Blackhawk
Park area is on the south side of the river about 3 miles south of
Portage.
* ADDITIONAL DETAILS...
- At 7:00 AM CDT Monday the stage was 18.7 feet.
- Bankfull stage is 12.7 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 7:00 AM CDT Monday was 19.1 feet.
- Forecast...The river is expected to fall below flood stage
Wednesday afternoon and continue falling to 15.2 feet Monday,
April 27.
- Flood stage is 17.0 feet.
- Flood History...This crest compares to a previous crest of
18.9 feet on 03/17/2019.
- http://www.weather.gov/safety/flood
Instruction:
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.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued this afternoon at 1215 PM CDT.
Area Description:
Columbia, WI
Forcast Office:
NWS Milwaukee/Sullivan WI