Headline:
Flood Warning issued April 20 at 5:00AM 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.
* WHERE...Rock River at Fort Atkinson.
* WHEN...Until further notice.
* IMPACTS...At 17.5 feet, Floodwaters partially cover low spots on
Highway 106 near Rock River Park. A riverside walkway near South
Water Street in downtown Fort Atkinson is closed. A few homes and
businesses are surrounded by water at the end of Vets lane near
the intersection of Highway 106 and Blackhawk Island Road about 1
mile southwest of Fort Atkinson. North Shore Road about 1 mile
southwest of Fort Atkinson is closed. Ralph Rd impacted.
Floodwaters cover fields on the east side of Fort Atkinson.
* ADDITIONAL DETAILS...
- At 4:00 AM CDT Monday the stage was 17.4 feet.
- Bankfull stage is 14.5 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 4:00 AM CDT Monday was 17.4 feet.
- Forecast...The river is expected to rise to a crest of 17.4
feet this morning.
- Flood stage is 16.0 feet.
- 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:
Jefferson, WI
Forcast Office:
NWS Milwaukee/Sullivan WI