Wisconsin - United States   2026-04-16   Thursday   43.08N, -88.91W

Lake Mills

Wisconsin - United States
2026-04-16

Flood Watch issued April 16 at 9:41PM CDT until April 18 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Issue date: 2026-04-17T02:41+00:00

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of east central, south central, and southeast Wisconsin, including the following counties, in east central Wisconsin, Fond du Lac and Sheboygan. In south central Wisconsin, Dane, Green, Green Lake, Iowa, Lafayette, Marquette and Rock. In southeast Wisconsin, Dodge, Jefferson, Kenosha, Milwaukee, Ozaukee, Racine, Walworth, Washington and Waukesha. * WHEN...From Friday afternoon through Saturday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - Excessive rain on saturated ground may result in flooding. - http://www.weather.gov/safety/flood

Flood Warning issued April 16 at 7:58PM CDT by NWS Milwaukee/Sullivan WI

Issue date: 2026-04-17T00:58+00:00

...The Flood Warning continues for the following rivers in Wisconsin... Rock River At Jefferson affecting Jefferson County. Rock River At Watertown affecting Jefferson County. * WHAT...Moderate flooding is forecast. * WHERE...Rock River at Watertown. * WHEN...Until further notice. * IMPACTS...At 6.5 feet, Floodwaters affect some streets in Watertown. Water is in Riverside Park. About 6 miles upstream near Ixonia, Wayside park along Highway 16 and Kanow Park is flooded. Rock River Road near Highway 16 is flooded. * ADDITIONAL DETAILS... - At 7:00 PM CDT Thursday the stage was 5.4 feet. - Bankfull stage is 4.0 feet. - Forecast...The river is expected to rise above flood stage just after midnight tonight and continue rising to 6.3 feet Tuesday evening. Additional rises are possible thereafter. - Flood stage is 5.5 feet. - Flood History...This crest compares to a previous crest of 6.3 feet on 04/04/1959. - http://www.weather.gov/safety/flood

Flood Watch issued April 16 at 7:38PM CDT by NWS Milwaukee/Sullivan WI

Issue date: 2026-04-17T00:38+00:00

...The Flood Watch continues for the following rivers in Wisconsin... Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. * WHAT...Flooding is possible. * WHERE...Rock River near Lake Koshkonong. * WHEN...From Friday afternoon until further notice. * 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 7:00 PM CDT Thursday the stage was 9.1 feet. - Forecast...Flood stage may be reached tomorrow afternoon. - Flood stage is 10.0 feet. - http://www.weather.gov/safety/flood