Maine state law: Floodplain Management — 30-A MRS §§ 3001-3007, 4352, 4401-4407 + Title 38 § 440

Maine municipalities derive authority to adopt floodplain management ordinances from Title 30-A MRSA Sections 3001 (Ordinance Power / home rule), 3001-3007 generally, 4352 (Zoning ordinances), 4401-4407 (Subdivision review), and Title 38 MRSA Section 440 (Mandatory Shoreland Zoning coordination). Maine does not directly regulate floodplain development at the state level; instead, the Maine Floodplain Management Program (administered by the Maine Office of Community Affairs, historically housed at the Department of Agriculture, Conservation and Forestry) publishes model floodplain management ordinances that municipalities adopt to qualify their residents for federally backed flood insurance under the National Flood Insurance Act of 1968. Per the state model ordinance, floodplain ordinances 'establish a Flood Hazard Development Permit system and review procedure for development activities in designated flood hazard areas.' Development inside FEMA-mapped Special Flood Hazard Areas (Zones A, AE, AO, AH, V, VE) requires a Flood Hazard Development Permit from the local CEO and must meet base flood elevation (BFE), freeboard, anchoring, flood vent, and material requirements (including the LiMWA — Limit of Moderate Wave Action — coastal V-zone rules). The state Code Enforcement Officer must be certified under 30-A MRS § 4451. Penalties under 30-A MRS § 4452 apply to ordinance violations. In Maine the floodplain ordinance overlays the mandatory Shoreland Zoning regulation under 38 MRS § 435 et seq. wherever a Special Flood Hazard Area falls within 250 feet of protected waters.

Floodplain ordinance violations are prosecuted under 30-A MRS § 4452 (Enforcement; penalties for violations of land use laws), which authorizes civil penalties from $100 to $2,500 per violation for the first offense and from $500 to $25,000 for subsequent offenses, plus injunctive relief, restoration orders, and recovery of attorney's fees and litigation costs. The local Code Enforcement Officer issues notices of violation and may seek injunctive relief in Maine District Court. Non-compliance with FEMA standards also jeopardizes the municipality's NFIP participation and residents' access to federally backed flood insurance.