Kirkwood, MO Environmental Rules: Flood Zones (2026)
FEMA flood zone rules in Kirkwood, MO, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.
Key Facts
- Permit required
- Any development in a mapped A or AE zone, § 5-71(A)
- Administered by
- Building Commissioner as Floodplain Administrator (§ 5-71(B))
- Flood maps used
- St. Louis County FIRM panels dated Feb. 4, 2015
- Application must show
- Existing/proposed elevation, floodway or flood fringe status
- Penalty
- Up to $500 fine plus costs, each day separate (§ 5-74)
Summary
Kirkwood requires a floodplain development permit for any construction inside its mapped special flood hazard areas before a shovel goes in the ground. Sections 5-70 and 5-71 name the Building Commissioner as Floodplain Administrator and bar any development, alteration or manufactured-home placement in a numbered or unnumbered A or AE zone without one.
A. Floodplain development permit (required). A floodplain development permit shall be required for all proposed construction or other development, including the placement of manufactured homes, in the areas described in § 5-70(A). No person, firm, corporation, or unit of government shall initiate any development or substantial improvement or cause the same to be done without first obtaining a separate floodplain development permit for each structure or other development.
Full Breakdown
Article VI of Chapter 5 applies to every numbered and unnumbered A zone and AE zone on the FEMA Flood Insurance Rate Maps for St. Louis County, listed by panel number in § 5-70(A) and dated February 4, 2015, as amended. Inside those zones, § 5-70(A) bars any development except through a floodplain development permit issued by the City Council or its designated representative, and § 5-71(A) restates that no person, firm, corporation or unit of government may initiate development or a substantial improvement, including placing a manufactured home, without first obtaining a separate permit for each structure.
Section 5-71(B) names the Building Commissioner as the City's Floodplain Administrator, with duties under § 5-71(C) that include reviewing every application to confirm the site is reasonably safe from flooding, confirming other required federal, state and local approvals are in hand, notifying the Missouri State Emergency Management Agency and FEMA before any watercourse is altered or relocated, and keeping a permanent record of the elevation of the lowest floor of every new or substantially improved structure. A complete application under § 5-71(D) must describe the parcel, the proposed work, its intended use, the structure's assessed and fair market value, whether the site sits in a floodway or flood fringe, the existing base flood elevation and the elevation of the proposed development, and must carry plans, specifications and the signature of the permittee or an authorized agent.
Violations & Fines
Developing inside a mapped flood zone without the § 5-71 permit, or violating any condition attached to a variance, is a misdemeanor under § 5-74: a conviction carries a fine of up to $500 plus all case costs and expenses, with each day the violation continues counted as a separate offense, and the City can still pursue any other lawful remedy to stop or undo the work.
Frequently Asked Questions
Do I need a city permit to build in a Kirkwood flood zone?
Who administers Kirkwood's floodplain rules?
What happens if I build in the floodplain without a permit?
Sources & Official References
Other rules in Kirkwood
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Flood Zones in Nearby Cities
How other cities in St. Louis County handle flood zones.