FEMA Flood Insurance Rate Maps, Studies, and Database Products

The Illinois State Water Survey is providing preliminary and pending Flood Insurance Rate Maps on this web site. Maps revised between preliminary and pending phases are not posted. Effective Flood Insurance Rate Maps are posted at the Federal Emergency Management Agency Map Service Center web site. The FEMA web site for each effective digital FIRM may be accessed by selecting the county and individual map.

Illinois County Map Adams County Alexander County Bond County Boone County Brown County Bureau County Calhoun County Carroll County Cass County Champaign County Christian County Clark County Clay County Clinton County Coles County Cook County Crawford County Cumberland County DeKalb County Dewitt County Douglas County DuPage County Edgar County Edwards County Effingham County Fayette County Ford County Franklin County Fulton County Gallatin County Greene County Grundy County Hamilton County Hancock County Hardin County Henderson County Henry County Iroquois County Jasper County Jackson County Jefferson County Jersey County Jo Daviess County Johnson County Kane County Kankakee County Kendall County Knox County Lake County LaSalle County Lawrence County Lee County Livingston County Logan County Macon County Macoupin County Madison County Marion County Marshall County Mason County Massac County McDonough County McHenry County McLean County Menard County Mercer County Monroe County Montgomery County Morgan County Moultrie County Ogle County Peoria County Perry County Piatt County Pike County Pope County Pulaski County Putnam County Randolph County Richland County Rock Island County Saline County Sangamon County Schuyler County Scott County Shelby County St. Clair County Stark County Stephenson County Tazewell County Union County Vermilion County Wabash County Warren County Washington Wayne County White County Whiteside County Will County Williamson County Winnebago County Woodford County


To download or view a map, click a county on the map above. Counties in red are preliminary, and are for review purposes only. Preliminary maps are not official, and are not to be reproduced or used as official FEMA maps until they are finalized. There is a six month period, before maps become effective, in which the community updates, revises, and adopts ordinances to comply with the new FEMA maps. During this six month period a county's FIRM status is considered pending. Counties in blue have pending maps. Counties in green have become effective. Counties with hash marks have some panels currently in the process of being revised. Please see our disclaimer.