Zoning › State preemptions › Mississippi

Mississippi Floodplain Management Act — NFIP Compliance & SFHA Construction Standards (MS)

Tracked preemption from the Mississippi overlay bundle.

Overview

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Effective
1973-04-09
Sunset
—
Authority
state
Scope
state:MS
Other Mississippi preemptions
Mississippi Brownfields Voluntary Cleanup & Redevelopment ActMississippi Coastal Preserves System — Tidelands Trust & MDMR Designated PreservesMississippi Gaming Control Act — Gulf Coast & River County Casino Siting PreemptionMississippi Tax Increment Financing Act — Redevelopment & Economic Development TIFMississippi Agricultural Districts & Agricultural Land PreservationMississippi Coastal Wetlands Protection Law — MDMR Permit JurisdictionMississippi Military Installation Influence — AICUZ Coordination (Keesler AFB, Columbus AFB, NAS Meridian, Stennis Space Center, Camp Shelby)Mississippi Inland Wetlands & Waters — §401 Water Quality Certification

Trigger predicate

When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.

OR
  • parcel.in_fema_sfha == True
  • city.participates_in_nfip == True

Preempted fields

3 fields on the base district schema are rewritten when the trigger fires.

FieldOpValueNote
base_districts[*].sfha_construction_standards_requiredoverrideTrue§51-35-7: communities participating in the National Flood Insurance Program must adopt and enforce floodplain management regulations consistent with 44 CFR §60.3
base_districts[*].min_finished_floor_elevationfloor_atbase_flood_elevation_plus_freeboardMinimum finished-floor elevation equals BFE; coastal V-zone requires additional freeboard and breakaway construction per MS Building Code adoption
review_typerequirefloodplain_development_permitLocal floodplain administrator must issue floodplain development permit prior to any construction/substantial improvement in SFHA

Citation

Authority source
Miss. Code Ann. §§51-35-1 through 51-35-31 (Mississippi Floodplain Management Act); 44 CFR Parts 59-60 (NFIP)
§ §§51-35-1 et seq.; §51-35-7
https://law.justia.com/codes/mississippi/title-51/chapter-35/

Research notes

Mississippi Emergency Management Agency (MEMA) State Floodplain Coordinator oversees community compliance with the federal NFIP. Federal conflict check: 44 CFR §60.3 federal minimums and FEMA CRS program operate in parallel. Post-Katrina (2005), Gulf Coast counties operate under MS Building Code §17-1-119 with hardened coastal amendments (IBC 2018 base + ASCE 7 wind-load + freeboard). Wind pool insurance (§83-34) is a parallel cost layer, not a zoning preemption.