Headline:
Flood Warning issued April 20 at 4:38PM CDT by NWS Milwaukee/Sullivan WI
Event:
Flood Warning
Urgency:
Immediate
Effective:
April 20, 2026 - 2:38pm
Expires:
April 21, 2026 - 2:45am
Description:
...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.
* WHAT...Minor flooding is occurring and moderate flooding is
forecast.
* WHERE...Rock River at Watertown.
* WHEN...Until further notice.
* IMPACTS...At 6.0 feet, Water nears some streets in Watertown.
Water is in Riverside Park in Watertown. About 6 miles upstream
near Ixonia, Wayside park on Highway 16, and Kanow Park is
flooded. Rock River Road near Highway 16 is flooded.
* ADDITIONAL DETAILS...
- At 4:00 PM CDT Monday the stage was 5.6 feet.
- Bankfull stage is 4.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 4:00 PM CDT Monday was 5.6 feet.
- Forecast...The river is expected to rise to 6.2 feet early
Saturday morning. Additional rises are possible thereafter.
- Flood stage is 5.5 feet.
- Flood History...This crest compares to a previous crest of
6.2 feet on 03/31/1979.
- http://www.weather.gov/safety/flood
Instruction:
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
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 late tonight at 445 AM CDT.
Area Description:
Jefferson, WI
Forcast Office:
NWS Milwaukee/Sullivan WI