FEMA flood zone rules in Joliet, IL — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
Joliet has significant FEMA flood zones along the Des Plaines River, roughly between the river on the west and Eastern Avenue on the east. Properties in flood zones must comply with FEMA building requirements including elevation standards. Updated FIRM maps took effect February 15, 2019.
Joliet's floodplain area is primarily defined along the Des Plaines River corridor, roughly bounded by the river on the west and Eastern Avenue on the east. Many properties within these limits were added to the floodplain based on the February 15, 2019 FEMA Flood Insurance Rate Map (FIRM) updates. Properties in designated flood zones must comply with FEMA National Flood Insurance Program requirements including minimum elevation standards, flood-resistant construction techniques, and flood insurance requirements. Will County participates in the NFIP community rating system. The city's Public Works Department manages floodplain compliance. Residents can check their flood zone status through the FEMA Flood Map Service Center at msc.fema.gov or the Illinois Flood Maps portal.
Building in a flood zone without compliance may result in permit denial, fines, and ineligibility for federal flood insurance. NFIP violations may affect community rating.
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Side-by-side rule comparisons with other cities in Will County.
See how other cities in Will County handle flood zones.
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