Tinley Park, IL Environmental Rules: Flood Zones (2026)
FEMA flood zone rules in Tinley Park, IL, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.
Key Facts
- Flood fringe permit
- required before any development
- Floodway permit
- needs IDNR/OWR delegation letter
- Compensatory storage
- 1.5x volume of lost storage
- Fill removal option
- FEMA Letter of Map Revision
- Permitting official
- Director of Community Development
- Max fine
- $50-$750 per offense, § 152.99
Summary
Village Code § 152.20 allows development or filling in a mapped flood fringe only if it is protected against the base flood by proper elevation and meets compensatory storage requirements, and bars any use that reduces drainage capacity. No one may start floodplain development without a development permit from the Director of Community Development.
Development in and/or filling of the flood fringe will be permitted if protection is provided against the base flood by proper elevation, compliance with compensatory storage requirements, and other applicable provisions of this chapter. No use will be permitted that adversely affects the capacity of drainage facilities or systems. ... No person, firm, corporation, or governmental body shall commence any development in the floodplain without first obtaining a development permit from the Director of Community Development.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-40: Supplement contains: Local legislation current through Ordinance 2026-O-007, passed 2-17-2026, Resolution 2018-R-077, passed 10-2-18, and State legislation current through 2010 Pamphlet No. 7).
Full Breakdown
20 governs development in the flood fringe portion of Tinley Park's mapped floodplain: filling or building there is permitted only if the base flood is offset by proper elevation, compensatory storage and the chapter's other requirements, and no use may be allowed that adversely affects the capacity of drainage facilities or systems. 23. 20(B) requires that fill used to raise a site above the base flood elevation be paired with a FEMA Letter of Map Revision before the site can be treated as removed from the floodplain, and requires compensatory storage: excavated volume below the base flood elevation must equal at least one and one-half times the storage lost to fill or structures, located opposite or adjacent to the filled area for streams and watercourses.
21, governs the more tightly controlled floodway itself: no floodway development, redevelopment or modification may proceed without a village development permit, and, except where a project qualifies for IDNR/OWR Regional Permit No. 3, a delegation letter from the Illinois Department of Natural Resources' Office of Water Resources is required before the village can issue that permit.
Violations & Fines
Section 152.99 makes failure to obtain the development permit required by §§ 152.20(A) and 152.21(A), or failure to meet its conditions, a chapter violation. The Director of Community Development must notify the owner by certified mail, and if the violation is not corrected within ten days the village may seek a circuit court injunction or a fine of $50 to $750 per offense, with each day a separate offense and a notice of violation recorded against the property's title.
Frequently Asked Questions
Can I build or fill in a flood fringe in Tinley Park?
Are floodway rules stricter than flood fringe rules?
What happens if I develop in the floodplain without a permit?
Sources & Official References
Other rules in Tinley Park
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Flood Zones in Nearby Cities
How other cities in Cook County handle flood zones.