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Floods in Illinois
19 federal floods disaster declarations in Illinois since 1953.
Floods — Illinois — federal disaster declarations per year
19572024
Counties most affected
Calhoun County11Pike County10Rock Island County9Jersey County9Adams County9Cook County8Henderson County8Hancock County8St. Clair County8Fulton County8Monroe County8Cass County7Carroll County7Mercer County7Whiteside County7Alexander County6LaSalle County6Mason County6Schuyler County6Bureau County6Randolph County6Greene County6Henry County6Jo Daviess County6Morgan County6Union County5Brown County5Jackson County5Winnebago County5Madison County5Peoria County5McHenry County5Scott County5Tazewell County5Woodford County4DuPage County4Grundy County4Kane County4Knox County4Lake County4Lee County4Marshall County4Ogle County4Pulaski County4Stephenson County4Will County4Clark County3Kendall County3DeKalb County3Crawford County2Pope County2Warren County2Macon County2Logan County2Boone County2Livingston County2Massac County2Putnam County2Clinton County2Stark County1Cumberland County1Coles County1Washington County1Sangamon County1Lawrence County1McLean County1Menard County1Kankakee County1Johnson County1Gallatin County1Franklin County1Edgar County1Douglas County1McDonough County1De Witt County1Shelby County1
Declarations
September 20, 2024Flood7 counties
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODNG
November 20, 2023Flood1 counties
SEVERE STORMS AND FLOODING
October 14, 2022Flood1 counties
SEVERE STORM AND FLOODING
September 19, 2019Flood28 counties
SEVERE STORMS AND FLOODING
May 10, 2013Flood47 counties
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING
May 9, 2001Flood10 counties
FLOODING
July 9, 1993Flood39 counties
SEVERE STORMS & FLOODING
April 15, 1992Flood1 counties
FLOODING
August 21, 1987Flood3 counties
SEVERE STORMS & FLOODING
October 7, 1986Flood8 counties
SEVERE STORMS & FLOODING
March 29, 1985Flood23 counties
SEVERE STORMS & FLOODING
April 30, 1979Flood29 counties
SEVERE STORMS & FLOODING
June 10, 1974Flood46 counties
SEVERE STORMS & FLOODING
April 26, 1973Flood52 counties
SEVERE STORMS & FLOODING
September 4, 1972Flood3 counties
SEVERE STORMS & FLOODING
August 30, 1969Flood15 counties
HEAVY RAINS & FLOODING
June 6, 1969Flood10 counties
FLOODING
May 27, 1961Flood
FLOODS & TORNADOES
June 22, 1957Flood
FLOODS
Source: OpenFEMA Disaster Declarations Summaries. History is not a forecast.