La Grange, MO Environmental Rules: Flood Zones (2026)
FEMA flood zone rules in La Grange, MO, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.
Key Facts
- Administrator
- City Administrator (Floodplain Administrator)
- Applies to
- Numbered/unnumbered A and AE Zones
- FIRM panels
- 29111C0317C, 29111C0336C (3-2-2012)
- Appeal body
- City Council
- Large-subdivision threshold
- 5 acres or 50 lots needs BFE data
Summary
In the City of La Grange, any development inside a mapped A Zone or AE Zone requires a floodplain development permit from the City Council before construction begins. The rule covers new buildings, manufactured homes, fill and substantial improvements alike.
Lands To Which Chapter Applies. This Chapter shall apply to all lands within the jurisdiction of the City of LaGrange, Missouri identified as numbered and unnumbered A Zones and AE Zones on the Flood Insurance Rate Map (FIRM) for Lewis County, Missouri on map panels 29111C0317C and 29111C0336C dated March 2, 2012, as amended, and any future revisions thereto. In all areas covered by this Chapter, no development shall be permitted except through the issuance of a floodplain development permit granted by the City Council or its duly designated representative under such safeguards and restrictions as the City Council or the designated representative may reasonably impose for the promotion and maintenance of the general welfare, health of the inhabitants of the community, and as specifically noted in Section 405.040.
Full Breakdown
Chapter 405 of the La Grange City Code applies to every lot within the city identified as a numbered or unnumbered A Zone or AE Zone on the Flood Insurance Rate Map for Lewis County, map panels 29111C0317C and 29111C0336C dated March 2, 2012. Under Section 405.020, no development is permitted in those zones except through a floodplain development permit issued by the City Council or its designated representative, subject to safeguards for public health and welfare. Section 405.030 assigns the City Administrator as Floodplain Administrator, responsible for reviewing every permit application, verifying other federal, state and local approvals have been obtained, notifying the Missouri State Emergency Management Agency and FEMA of any watercourse alteration, and keeping records of the lowest-floor elevation of every new or substantially improved structure.
Applicants must describe the land by lot, block and street address, identify whether the site sits in the floodway or flood fringe, state the assessed and fair market value of the work, and supply plans and specifications. Larger subdivisions or manufactured home parks of five acres or fifty lots, whichever is smaller, must include base flood elevation data with the application. Appeals from a denial go to the City Council sitting as the floodplain appeal board under Section 405.050.
Violations & Fines
Building or filling in a flood hazard area without first obtaining a floodplain development permit is a violation of Chapter 405 and, per the general penalty carried in the code, exposes the owner to a fine and possible confinement for each day the violation continues. A structure lacking the elevation certificate or other compliance documentation required by this chapter is presumed to be in violation until that documentation is produced.
Frequently Asked Questions
Do I need a permit to build in a La Grange flood zone?
Who reviews floodplain permit applications in La Grange?
What happens if I develop in the floodplain without a permit?
Sources & Official References
Other rules in La Grange
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