means any man-made change to improved or unimproved real estate, including but not limited to building or other structures, mining, dredging, filling, grading, paving excavation or drilling operations or storage of equipment or materials.

means an official map of a community issued by FEMA that depicts, based on detailed analyses, the boundaries of the 100-year and 500-year floods and the 100-year floodway.

An official map of a community issued by the Federal Insurance Administrator, where the boundaries of the flood and related erosion areas having special hazards have been designated as Zone A or E.

The channel of the river, creek or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than the designated height.

means a use that cannot perform its intended purpose unless it is located or carried out in close proximity to water. The term includes only docking facilities, port facilities that are necessary for the loading and unloading or cargo or passengers, and ship building and ship repair facilities, but does not include long-term storage or related manufacturing facilities.

means the highest natural elevation of the ground surface prior to construction next to the proposed walls of a structure.

means any structure that is:

Structures forwhich the start of construction commenced on or after the effective date of the first floodplain management code, regulation, ordinance, or standard adopted by the authority having jurisdiction, including any subsequent improvements to such structures. New construction includes work determined to be substantial improvement.

means a vehicle which is:

See "floodway."

The land area subject to flood hazards and shown on a Flood Insurance Rate Map or other flood hazard map as Zone A, AE, A1-30, A99, AR, AO, AH, V, VO, VE, or V1-30.

The date of issuance for new construction and substantial improvements to existing structures, provided the actual start of construction, repair, reconstruction, rehabilitation, addition, placement or other improvement is within 180 days after the date of issuance. The actual start of construction means the first placement of permanent construction of a building (including a manufactured home) on a site, such as the pouring of a slab or footings, installation of pilings or construction of columns. Permanent construction does not include land preparation (such as clearing, excavation, grading or filling), the installation of streets or walkways, excavation for a basement, footings, piers or foundations, the erection of temporary forms, or the installation of accessory buildings such as garages or shedsnot occupied as dwelling units or not part of the main building. For a substantial improvement, the actual "start of construction" means the first alteration of any wall, ceiling, floor or other structural part of a building, whether or not that alteration affects the external dimensions of the building.

means, for floodplain management purposes, a walled and roofed building, including a gas or liquid storage tank, that is principally above ground, as well as a manufactured home.

When work to repair or replace a foundation results in the repair or replacement of a portion of the foundation with a perimeter along the base of the foundation that equals or exceeds 50% of the perimeter of the base of the foundation measured in linear feet, or repair or replacement of 50% of the piles, columns or piers of a pile, column or pier supported foundation, the building official shall determine it to be substantial repair of a foundation and shall require all existing portions of the entire building or structure to meet the requirements of 780 CMR. [As amended by MA 9th Edition Building Code]

means a grant of relief by a community from the terms of floodplain management regulation. [US Code of Federal Regulations, Title 44, Part 59]

means the failure of a structure or other development to be fully compliant with the community's floodplain management regulations. A structure or other development without the elevation certificate, other certifications, or other evidence of compliance required in Section 17.46.030 is presumed to be in violation until such time as that documentation is provided. [US Code of Federal Regulations, Title 44, Part 59]

means an area of special flood hazard without water surface elevations determined.

mean areas of special flood hazard with water surface elevations determined.

means an area of special flood hazard having shallow water depths and/or unpredictable flow paths between one and three feet, and with water surface elevations determined.

means an area of special flood hazard having shallow water depths and/or unpredictable flow paths between one and three feet. (Velocity flow may be evident; such flooding is characterized by ponding or sheet flow.)

means an area of special flood hazard where enough progress has been made on a protective system, such as dikes, dams, and levees, to consider it complete for insurance rating purposes. (Flood elevations may not be determined.)

mean areas of minimal or moderate flood hazards or areas of future conditions flood hazard. (Zone X replaces Zones B and C on new and revised maps.)

means an area of special flood hazard without water surface elevations determined, and with velocity, that is inundated by tidal floods (coastal high hazard area).

mean areas of special flood hazard with water surface elevations determined and with velocity that is inundated by tidal floods (coastal high hazard area).