Headline:
Flood Warning issued April 27 at 10:21AM CDT until May 4 at 1:00AM CDT by NWS Milwaukee/Sullivan WI
Event:
Flood Warning
Urgency:
Immediate
Effective:
April 27, 2026 - 8:21am
Expires:
April 27, 2026 - 8:30pm
Description:
...The Flood Warning is extended for the following rivers in
Wisconsin...
Rock River Near Lake Koshkonong affecting Rock and Jefferson
Counties.
Crawfish River At Milford affecting Jefferson County.
...The Flood Warning continues for the following rivers in
Wisconsin...Illinois...
Fox River Near Berlin affecting Green Lake County.
Rock River At Newville affecting Rock County.
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 near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County.
Fox River Lower Near New Munster affecting Kenosha and Lake
Counties.
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.
* WHERE...Rock River near Lake Koshkonong.
* WHEN...Until Monday, May 04.
* IMPACTS...At 11.3 feet, There is knee-deep water over Blackhawk
Island Road. Lamp Road on west side of river also becomes flooded.
Lake Koshkonong merges with Mud Lake to the east of Lake
Koshkonong.
* ADDITIONAL DETAILS...
- At 10:00 AM CDT Monday the stage was 11.2 feet.
- Bankfull stage is 9.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 10:00 AM CDT Monday was 11.3 feet.
- Forecast...The river is expected to rise to a crest of 11.2
feet this afternoon. It will then fall below flood stage
Sunday evening.
- Flood stage is 10.0 feet.
- http://www.weather.gov/safety/flood
Instruction:
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Caution is urged when walking near riverbanks.
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 evening at 700 PM CDT.
Area Description:
Jefferson, WI; Rock, WI
Forcast Office:
NWS Milwaukee/Sullivan WI