FEMA flood zone rules in New Haven County, CT β also called floodplain regulations or special flood hazard area (SFHA) rules β determine flood insurance requirements and elevation standards for new construction.
New Haven County has no operational county government (abolished 1960). The county fronts Long Island Sound from Milford east to Madison and is drained by the Quinnipiac, Housatonic, Naugatuck, and Mill Rivers, creating both coastal and inland flood exposure. Flood-zone regulation is governed by FEMA's National Flood Insurance Program, the Connecticut Coastal Management Act under Conn. Gen. Stat. Sec. 22a-90 through 22a-112, the Connecticut Inland Wetlands and Watercourses Act under Conn. Gen. Stat. Sec. 22a-36 through 22a-45, and the state Flood Management Act in Conn. Gen. Stat. Chapter 476a (Sec. 25-68b et seq.).
New Haven County combines two flood regimes. Along the Long Island Sound shoreline (Milford, West Haven, New Haven, East Haven, Branford, Guilford, Madison) the Connecticut Coastal Management Act (Conn. Gen. Stat. Sec. 22a-90 through 22a-112) requires a Coastal Site Plan Review for development within the coastal boundary, administered by the local zoning commission with CT DEEP review. Inland, the Quinnipiac River through Meriden, Wallingford, North Haven, and New Haven, plus the Housatonic and Naugatuck Rivers through Waterbury, Naugatuck, Derby, Ansonia, Seymour, and Shelton, produce extensive Special Flood Hazard Areas. The Connecticut Inland Wetlands and Watercourses Act, Conn. Gen. Stat. Sec. 22a-36 through 22a-45, requires a permit from the local Inland Wetlands Agency for regulated activities in or within an upland review area of any wetland or watercourse. The state Flood Management Act (Conn. Gen. Stat. Sec. 25-68b through 25-68h) requires state agency activities and state-funded projects in floodplains to be elevated or floodproofed at least one foot above the base flood elevation and to comply with FEMA NFIP standards. All Connecticut municipalities participate in the NFIP and must adopt and enforce a local flood-damage-prevention ordinance to maintain eligibility. Activities in tidal, coastal, or navigable waters require a Structures, Dredging and Fill permit from CT DEEP under Conn. Gen. Stat. Sec. 22a-361.
Violations of the Inland Wetlands and Watercourses Act, Coastal Management Act, and Flood Management Act are enforceable by CT DEEP with civil penalties up to $25,000 per day under Conn. Gen. Stat. Sec. 22a-6b and Sec. 22a-44. Local flood-damage-prevention ordinance violations carry town-level fines and can lead to NFIP suspension. Federally non-compliant structures may lose flood insurance eligibility under the NFIP.
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See how New Haven County's flood zones rules stack up against other locations.
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