FEMA Flood Insurance Rate Maps, Studies, and Database Products
The Illinois State Water Survey is providing preliminary and final Flood Insurance Rate Maps on this web site. Maps revised between preliminary and final 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.
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 final. Counties in blue have final maps. Counties in green have become effective. Counties with hash marks have revisions for some panels. Please see our disclaimer.