Headline:
Flood Warning issued April 20 at 9:38PM CDT by NWS Milwaukee/Sullivan WI
Event:
Flood Warning
Urgency:
Immediate
Effective:
April 20, 2026 - 7:38pm
Expires:
April 21, 2026 - 7:45am
Description:
...The Flood Warning is extended for the following rivers in
Wisconsin...Illinois...
Sugar River At Brodhead affecting Green, Winnebago and Rock
Counties.
...The Flood Warning continues for the following rivers in
Wisconsin...Illinois...
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.
Crawfish River At Milford affecting Jefferson County.
* 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 9:00 PM 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 9:00 PM CDT Monday was 17.4 feet.
- Forecast...The river is expected to remain around 17.4 feet
tonight before falling below moderate flood by Wednesday
morning.
- Flood stage is 16.0 feet.
- Flood History...This crest compares to a previous crest of
17.4 feet on 09/11/2018.
- 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.
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.
Additional information is available at www.weather.gov.
The next statement will be issued Tuesday morning at 900 AM CDT.
Area Description:
Jefferson, WI
Forcast Office:
NWS Milwaukee/Sullivan WI