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Green County Sheriff's Office
Monday April 20th, 2026 :: 05:01 a.m. CDT

Alert

Flood Warning until 12:20AM Tuesday

...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...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Sugar River at Brodhead.

* WHEN...Until just after midnight tonight.

* IMPACTS...At 6.0 feet, Some roads are flooded about 6 miles downstream in Avon Township of Rock County, including Beloit Newark Rd. In the Avon Bottoms area of Rock County, flooding is occurring in Sugar River Park. In Illinois, Winslow Rd is threatened near the river between Durand and Shirland. Low lying areas of Sugar Shores Camping Resort may be inundated.

* ADDITIONAL DETAILS... - At 4:00 AM CDT Monday the stage was 6.0 feet. - Bankfull stage is 4.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Monday was 6.7 feet. - Forecast...The river is expected to fall below flood stage this evening and continue falling to 2.0 feet Sunday evening. - Flood stage is 5.0 feet. - http://www.weather.gov/safety/flood

* AFFECTED AREAS: WINNEBAGO, IL ... GREEN, WI ... ROCK, WI

Instructions:

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.

Address/Location
Green County Sheriff's Office
2827 6th St
Monroe, WI 53566

Contact
Emergency: 9-1-1
Non-emergencies: 608-328-9400

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Alert Details

Severity:
Severe - Significant threat to life or property
Urgency:
Immediate - Responsive action SHOULD be taken immediately
Certainty:
Observed - Determined to have occurred or to be ongoing
Category:
Meteorological (inc. flood)
Event:
Flood Warning

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