Flood Information

Flooding can occur along Lisle’s mapped floodplains, but it can also occur when storm sewers, roadway drainage ditches, and drainage paths around homes and businesses become overwhelmed with water.

Prepare & Protect

Regulatory Floodplains in Lisle

Regulatory floodplains are designated areas along the Village’s waterways, including:
  • East Branch of the DuPage River
  • St. Joseph Creek
  • St. Procopius Creek
  • Rott Creek
  • Schwartz Creek
These areas are classified as Special Flood Hazard Areas, Zone A, or Zone AE on the floodplain maps.

Village Floodplain Management Efforts

Examples of the Village’s efforts to improve flood conditions include:
  • Purchasing 26 floodplain properties and creating open space and the downtown stormwater detention area known as PrairieWalk Pond
  • Pursuing the voluntary purchase of additional floodplain properties and using the FEMA Flood Hazard Mitigation Grant and DuPage County Community Development Block Grant funds to demolish existing structures on acquired properties.
  • Pursuing funds to help homeowners elevate their homes using the FEMA Flood Hazard Mitigation Grant.
  • Participating in the Community Rating System (CRS), which provides homeowners in the regulatory floodplain with a 25% discount on their flood insurance premiums.
  • Participating in the National Flood Insurance Program.
    Now you can report a variety of issues harming our local waterways (such as illegal dumping into streams, river blockages, water quality issues and more) by using a new DuPage County Water Quality app. To use this easy, online reporting app, click here.