(a) In A Zones where base flood elevations have been determined, but before a floodway is designated, require that no new construction, substantial improvement or other development (including fill) be permitted which will increase base flood elevations more than one (1) foot at any point along the watercourse when all anticipated development is considered cumulatively with the proposed development.

(b) Should data be requested and/or provided, adopt a regulatory floodway based on the principle that the floodway must be able to convey the waters of the base flood without increasing the water surface elevation more than one (1) foot at any point along the watercourse.

(a) Proposed development shall be reviewed to assure that all necessary permits have been received from those governmental agencies from which approval is required by federal or state law, including Section 404 of the Federal Water Pollution Control Act Amendments of 1972, 33 U.S.C. Section 1334, and to determine whether proposed building sites will be reasonably safe from flooding.

(b) Permits shall be required for all new construction, substantial improvements and other development and shall be designed (or modified) and adequately anchored to prevent flotation, collapse or lateral movement of the structure, be constructed with materials resistant to flood damage and be constructed by methods and practices that minimize flood damage. Electrical, heating, ventilation, plumbing and air-conditioning equipment and other service facilities shall be designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.

(c) For all new construction and substantial improvements, fully enclosed areas below the lowest floor that are usable solely for parking of vehicles, building access or storage in an area other than a basement and which are subject to flooding shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Designs for meeting this requirement must be certified by a registered professional engineer or architect and must meet or exceed the following minimum criteria: A minimum of two (2) openings having a total net area of not less than one (1) square inch for every square foot of enclosed area subject to flooding shall be provided. The bottom of all openings shall be no higher than one (1) foot above grade. Openings may be equipped with screens, louvers or other coverings or devices provided that they permit the automatic entry and exit of floodwaters.

(d) The placement of mobile homes and manufactured homes shall be prohibited in flood hazard areas A (numbered and unnumbered), B and V. Recreational vehicles placed on sites within Zones A, A1-30, V1-V30 shall either: (1) be on the site for fewer than one hundred eighty (180) consecutive days; or (2) be fully licensed and ready for highway use. (A recreational vehicle is ready for highway use if it is on its wheels or jacking system, is attached to the site only by quick disconnect type utilities and security devices and has no permanently attached additions.)

(e) New and replacement water supply and sanitary sewer systems shall be designed to minimize or eliminate infiltration of floodwaters into the system. Sanitary sewer systems shall also minimize or eliminate discharge from the system into floodwaters. On-site waste disposal systems shall be located and constructed to avoid impairment to them or contamination from them during flooding.

(f) The property owner, or his agent, shall notify adjacent communities and the Connecticut Department of Environment Protection of any alteration or relocation of a watercourse. This notification shall be by certified mail, return receipt requested, with evidence of such notification submitted to the Zoning Commission and the Federal Emergency Management Agency. The property owner shall file in the Town Clerk's Office a maintenance agreement assuring that the flood-carrying capacity of the altered or relocated watercourse is not diminished.

(a) The Zoning Inspector shall require the applicant to utilize any base flood elevation and floodway data available from a federal, state or other source as criteria for requiring that all new construction and substantial improvements of residential structures have the lowest floor, including basement, elevated to or above the base flood level and all new construction and substantial improvements of nonresidential structures have the lowest floor, including basement, elevated or floodproofed so that it is watertight above the base flood level. Where floodproofing is utilized for a particular structure, a Connecticut registered professional engineer or architect shall certify that the floodproofing methods are adequate to withstand the flood depths, pressures, velocities, impact and uplift forces and other factors associated with the base flood, and a record of such certificate indicating the specific elevation, in relation to mean sea level, to which such structures are floodproofed shall be maintained with the Zoning Inspector.

(a) All new construction and substantial improvements of residential structures shall have the lowest floor (including basement) elevated to or above the base flood level.

(b) All new construction and substantial improvements of nonresidential structures shall have the lowest floor (including basement) elevated to or above the base flood level or, together with attendant utility and sanitary facilities, be designed so that below the base flood level the structure is floodproofed to or above that level.

(c) Where floodproofing is utilized for a particular structure in accordance with Subsection C(5)(b) of this section, a Connecticut registered professional engineer or architect shall certify that the floodproofing methods are adequate to withstand the flood depths, pressures, velocities, impact and uplift forces and other factors associated with the base flood, and a record of such certificate indicating the specific elevation (in relation to mean sea level) to which such structures are floodproofed shall be maintained with the Zoning Inspector.

(a) All new construction shall be located landward of the reach of mean high tide.

(b) All new construction and substantial improvements shall be elevated on adequately anchored pilings or columns, and securely anchored to such piles or columns so that the lowest portion of the structural members of the lowest floor (excluding the pilings or columns) is elevated to or above the base flood level; a Connecticut registered professional engineer or architect shall certify that the structure is securely anchored to adequately anchored pilings or columns in order to withstand velocity waters and hurricane wave wash from a one-hundred-year storm event and the space beneath the lowest floor shall be free of obstruction, or be constructed with breakaway walls intended to collapse under stress; said space shall not be used for human habitation.

(c) No use of fill for structural support of buildings shall be permitted.

(d) Man-made alterations of sand dunes which would increase potential flood hazard damage is prohibited.

(a) Encroachments, including fill, new construction, substantial improvements and other development that would result in any increase in flood levels within the community during the occurrence of the base flood discharge shall be prohibited.

(a) The applicant for a variance shall be notified in writing over the signature of the Zoning Inspector that the issuance of a variance to construct a structure below the base flood level will result in increased premium rates for flood insurance, and such construction below the base flood level increases risks to life and property. Such notification shall be maintained with a record of all variance actions as required in Subsection C(8)(b) of this section.

(b) The city shall maintain a record of all variance actions, including justification for their issuance, and report such variances issued in its annual report submitted to the Administrator.