A flood elevation certificate is to be used to provide elevation information necessary to ensure compliance with community floodplain management ordinances. Your insurance company may require one to determine the flood zone you are in and your insurance premium rate. An elevation certificate may also help to support a request for a Letter of Map Amendment (LOMA). Many towns on Long Island require flood elevation certificates for new construction. Some areas may include Rockville Centre, Baldwin, Freeport, Merrick, Bellmore, Wantagh, Seaford, Sea Cliff, Massapequa, Massapequa Park, Amityville, Amity Harbor, Copaigue, Lindenhurst, Babylon, West Islip, Bay Shore, Islip, East Islip, Great River, Oakdale, Sayville, Patchogue, Bellport, Bluepoint, Mastic, Shirley, West Hampton, Hampton Bays, South Hampton, Bridge Hampton, East Hampton, Amagansett, Montauk, Atlantic Beach, East Rockaway, Oceanside, Island Park, Long Beach, South Oyster Bay. Due to the positioning and low elevation of the North and South Forks, both are also considered vulnerable to flooding in the event of another strong hurricane. The largest flood zones on the Island are found on the south shore of Nassau and Suffolk Counties. For more information on flood zones on Long Island, click here.