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Floods in Wisconsin
21 federal floods disaster declarations in Wisconsin since 1953.
Floods — Wisconsin — federal disaster declarations per year
19692026
Counties most affected
Vernon County8Milwaukee County8Crawford County7Waukesha County7La Crosse County6Iron County6Bayfield County5Juneau County5Buffalo County5Ashland County5Clark County5Fond du Lac County4Pierce County4Grant County4Wood County4Pepin County4Ozaukee County4Jackson County4Outagamie County4Kenosha County4Monroe County4Waupaca County4Washington County4Chippewa County4Sauk County4Rusk County4Richland County4Douglas County4Dunn County4Racine County4Jefferson County3Eau Claire County3Green County3Adams County3Manitowoc County3Oneida County3Portage County3Rock County3Sheboygan County3Trempealeau County3Langlade County2Lafayette County2Oconto County2Burnett County2Kewaunee County2Iowa County2Green Lake County2Barron County2Vilas County2Walworth County2Lincoln County2Calumet County2Marathon County2Marinette County2Marquette County2Menominee County2Polk County2Brown County2Waushara County2Dodge County2Dane County2Winnebago County2St. Croix County2Forest County1Sawyer County1Shawano County1Price County1Florence County1Door County1Washburn County1Columbia County1Taylor County1
Declarations
June 30, 2026Flood21 counties
SEVERE STORMS, TORNADOES, AND FLOODING
September 11, 2025Flood3 counties
SEVERE STORMS, STRAIGHT-LINE WINDS, FLOODING, AND MUDSLIDES
March 11, 2020Flood3 counties
SEVERE WINTER STORM AND FLOODING
August 27, 2019Flood18 counties
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING
October 18, 2018Flood14 counties
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, FLOODING, AND LANDSLIDES
August 10, 2018Flood6 counties
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING
October 20, 2016Flood10 counties
SEVERE STORMS, FLOODING, AND MUDSLIDES
May 11, 2001Flood32 counties
FLOODING, SEVERE STORMS AND TORNADOES
August 16, 1999Flood10 counties
WI-FLOOD-07/20/99
August 2, 1996Flood2 counties
SEVERE STORMS, FLOODING AND TORNADOES
September 30, 1992Flood10 counties
SEVERE STORMS & FLOODING
August 30, 1990Flood1 counties
SEVERE STORMS & FLOODING
October 7, 1986Flood8 counties
SEVERE STORMS & FLOODING
August 14, 1986Flood2 counties
SEVERE STORMS
July 10, 1984Flood3 counties
SEVERE STORMS & FLOODING
July 24, 1980Flood4 counties
SEVERE STORMS & FLOODING
March 23, 1976Flood22 counties
SEVERE STORMS, ICING, WIND & FLOODING
April 27, 1973Flood34 counties
SEVERE STORMS & FLOODING
September 10, 1972Flood4 counties
HEAVY RAINS & FLOODING
July 11, 1969Flood6 counties
SEVERE STORMS & FLOODING
May 1, 1969Flood15 counties
FLOODING
Source: OpenFEMA Disaster Declarations Summaries. History is not a forecast.