Evanston, IL Environmental Rules: Flood Zones (2026)
FEMA flood zone rules in Evanston, IL, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.
Key Facts
- Governing chapter
- City Code Chapter 13
- Permit issuer
- Floodplain Administrator
- Floodway work
- Needs state IDNR/OWR permit first
- Fine range
- $50-$1,000 per day
Summary
Any new construction, substantial improvement, or watercourse alteration in Evanston's floodplain requires a floodplain development permit from the Floodplain Administrator before any work begins.
No person, firm, corporation, or governmental body shall commence any development activities, including new construction, substantial improvements, and alterations of a watercourse wholly within, partially within or in contact with the floodplains until a floodplain development permit is obtained from the Floodplain Administrator. No permit shall be issued by the Floodplain Administrator until the requirements of this Chapter have been met.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 21).
Full Breakdown
Evanston enacted its floodplain chapter to keep the City eligible for the National Flood Insurance Program and prevent new development from raising flood risk for others. No one may start construction, substantial improvement, or alteration of a watercourse anywhere within, partially within, or touching the floodplain without a permit from the Floodplain Administrator, who checks the site against FEMA's FIRM maps (§ 4-13-3-1). Development in a mapped floodway additionally needs a state IDNR/OWR floodway permit before the City will issue its own (§ 4-13-3-1(C)). Critical facilities below the 0.2%-annual-chance flood elevation need a permit too.
Violations & Fines
Building without a permit, or violating permit conditions, draws a notice of violation and a fine of $50 to $1,000 per day the violation continues (§ 4-13-12).
Frequently Asked Questions
Do I need a permit to build in Evanston's floodplain?
What if my property is in a mapped floodway?
Sources & Official References
Other rules in Evanston
Compare Evanston to another location·View the Illinois environmental rules overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.
Flood Zones in Nearby Cities
How other cities in Cook County handle flood zones.