For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
0.2% ANNUAL CHANCE FLOODPLAIN. The floodplain that would be inundated by the 0.2% annual chance flood and delineated on the Flood Insurance Rate Maps.
0.2% ANNUAL CHANCE FLOOD ELEVATION. The elevation to which flood waters are expected to rise during a 0.2% annual chance flood.
APPURTENANT STRUCTURE. A structure on the same parcel of property as the principal structure, the use of which is incidental to the use of the principal structure. Also shall be known as ACCESSORY STRUCTURE.
AREA OF SHALLOW FLOODING. A designated AO or AH Zone on a community’s Flood Insurance Rate Map (FIRM) with a one percent or greater annual chance of flooding to an average depth of one to three feet where a clearly defined channel is unpredictable and where velocity flow may be evident. Such flooding is characterized by ponding or sheet flow.
BASE FLOOD. The flood having 1% chance of being equaled or exceeded in any given year.
BASE FLOOD ELEVATION. The elevation to which flood waters are expected to rise during the base flood.
BASEMENT. Any area of the building having its floor subgrade (below ground level) on all sides.
BUILDING. Structure. See definition for STRUCTURE.
CRITICAL FACILITY. Any property that, if flooded, would result in severe consequences to public health and safety. CRITICAL FACILITIES include, but are not limited to: facilities that produces, use or store hazardous materials; hospitals, nursing homes and housing likely to contain vulnerable populations; emergency support function facilities like police stations, fire stations, vehicle and equipment storage facilities and emergency operations centers; public and private utility facilities vital to maintaining or restoring normal services to flooded areas before, during and after a flood.
DEVELOPMENT. Any human-made change to improved or unimproved real estate, including, but not limited to, the construction, reconstruction, renovation, repair, expansion or alteration of buildings or other structures; the placement of manufactured homes; streets and other paving; utilities; filling, grading and excavation; mining; dredging; drilling operations; storage of equipment or materials; or obstructions.
EXISTING MANUFACTURED HOME PARK OR SUBDIVISION. A manufactured home park or subdivision for which the construction of facilities for servicing the lots on which the manufactured homes are to be affixed (including, at a minimum, the installation of utilities, the construction of streets and either final site grading or the pouring of concrete pads) is complete before the effective date of the floodplain management regulations adopted by a community.
EXPANSION TO AN EXISTING MANUFACTURED HOME PARK OR SUBDIVISION. The preparation of additional sites by the construction of facilities for servicing the lots on which the manufactured homes are to be affixed (including the installation of utilities, the construction of streets, and either final site grading or the pouring of concrete pads).
FLOOD or FLOODING. A general and temporary condition of partial or complete inundation of normally dry land areas.
FLOOD FRINGE. That area of the floodplain, outside of the floodway, that has a 1% chance of flood occurrence in any one year.
FLOOD INSURANCE RATE MAY (FIRM). An official map of a community, on which the Flood Insurance Study has delineated the special flood hazard area boundaries and the risk premium zones applicable to the community.
FLOOD INSURANCE STUDY (FIS). The official report provided by the Federal Emergency Management Agency. The report contains flood profiles, as well as the Flood Insurance Rate Map and the water surface elevation of the base flood.
FLOODPLAIN. Any land area susceptible to being inundated by water from any source. (See definition of FLOODING.). FLOODPLAIN includes flood fringe and floodway. FLOODPLAIN and SPECIAL FLOOD HAZARD AREA are the same for use by this chapter.
FLOOD-PROOFING. Any combination of structural (dams and levees) and nonstructural additions, changes or adjustments to structures that reduce or eliminate flood damage to real estate or improved real property, water and sanitary facilities and structures and their contents. WET FLOOD-PROOFING is defined as permanent or contingent measures applied to a structure to provide resistance to damage from flooding by allowing flood waters to enter the structure. WET FLOOD-PROOFING requires the structure not to be water-tight. (Vents must be open or have automatic mechanical means of opening.) WET FLOOD-PROOFING the garage of a residential structure is allowed and sometimes encouraged. DRY FLOOD-PROOFING is a means to make a structure water-tight and impermeable to flood waters. DRY FLOOD-PROOFING is not allowed to residential structures.
FLOODWAY or REGULATORY FLOODWAY. The channel of a river 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 one foot.
FREEBOARD. A factor of safety usually expressed in feet above a flood level for purposes of floodplain management. FREEBOARD tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, clogged bridge openings and the hydrological effect of urbanization of the watershed.
HIGHEST ADJACENT GRADE. The highest natural elevation of the ground surface prior to construction next to the proposed walls of a structure.
HISTORIC STRUCTURE. Any structure that is:
(1) Listed individually in the National Register of Historic Places (a listing maintained by the Department of Interior) or preliminarily determined by the Secretary of the Interior as meeting the requirements for individual listing on the National Register;
(2) Certified or preliminarily determined by the Secretary of the Interior as contributing to the historical significance of a registered historic district or a district preliminarily determined by the Secretary to qualify as a registered historic district;
(3) Individually listed on a state inventory of historic places in states with historic preservation programs which have been approved by the Secretary of the Interior; or
(4) Individually listed on a local inventory of historic places in communities with historic preservation programs that have been certified either:
(a) By an approved state program as determined by the Secretary of the Interior; or
(b) Directly by the Secretary of the Interior in states without approved programs.
LOWEST FLOOR. The lowest floor of the lowest enclosed area (including basement). An unfinished or flood-resistant enclosure, usable solely for parking of vehicles, building access or storage, in an area other than a basement area, is not considered a building’s LOWEST FLOOR; provided that, such enclosure is not built or modified so as to render the structure in violation of the applicable non-elevation design requirements of this chapter.
MANUFACTURED HOME. A structure, transportable in one or more sections, which is built on a permanent chassis and is designed for use with or without a permanent foundation when attached to the required utilities. The term MANUFACTURED HOME does not include a “recreational vehicle”.
MANUFACTURED HOME PARK OR SUBDIVISION. A parcel (or contiguous parcels) of land divided into two or more manufactured home lots for rent or sale.
NEW CONSTRUCTION FOR FLOODPLAIN MANAGEMENT PURPOSES. Structures for which the “start of construction” commenced on or after the effective date of the floodplain management regulation adopted by a community and includes any subsequent improvements to such structures.
NEW MANUFACTURED HOME PARK OR SUBDIVISION. A manufactured home park or subdivision for which the construction of facilities for servicing the lots on which the manufactured homes are to be affixed (including at a minimum, the installation of utilities, the construction of streets and either final site grading or the pouring of concrete pads) is completed on or after the effective date of floodplain management regulations adopted by a community.
OBSTRUCTION. Any wall, wharf, embankment, levee, dike, pile, abutment, projection, excavation (including the alteration or relocation of a watercourse or drainway), channel rectification, bridge, conduit, culvert, building, stored equipment or material, wire, fence, rock, gravel, refuse, fill or other analogous structure or matter which may impede, retard or change the direction of the flow of water, either in itself or by catching or collecting debris carried by such water, or that is placed where the natural flow of the water would carry such structure or matter downstream to the damage or detriment of either life or property. Dams designed to store or divert water are not obstructions if permission for the construction thereof is obtained from the Department of Natural Resources pursuant to the Safety of Dams and Reservoirs Act, Neb. RS 46-1601 to 46-1670, as amended.
OVERLAY DISTRICT. A district in which additional requirements act in conjunction with the underlying zoning district(s). The original zoning district designation does not change.
POST-FIRM STRUCTURE. A building that was constructed or substantially improved after 9-15-1978.
PRE-FIRM STRUCTURE. A building that was constructed or substantially improved on or before 9-15-1978.
PRINCIPALLY ABOVE GROUND. That at least 51% of the actual cash value of the structure is above ground.
RECREATIONAL VEHICLE. A vehicle which is:
(1) Built on a single chassis;
(2) Four hundred square feet or less when measured at the largest horizontal projections;
(3) Designed to be self-propelled or permanently towable by a light duty truck; and
(4) Designed primarily not for use as a permanent dwelling, but as temporary living quarters for recreational, camping, travel or seasonal use.
REGULATORY FLOOD ELEVATION. The base flood elevation (BFE) plus a freeboard factor as specified in this chapter.
SPECIAL FLOOD HAZARD AREA (SFHA). The land in the floodplain within a community subject to 1% or greater chance of flooding in any given year.
START OF CONSTRUCTION. The date the floodplain development permit was issued; provided, the actual start of construction, repair, reconstruction, rehabilitation, addition, placement or other improvement was within 180 days of the permit date. START OF CONSTRUCTION also includes substantial improvement, and means the date the building permit was issued; provided, the actual START of construction, repair, reconstruction, rehabilitation, addition, placement or other improvement was within 180 days of the permit date. The actual START means the first placement of permanent construction of a structure on a site, such as the pouring of slab or footings, the installation of piles, the construction of columns or any work beyond the stage of excavation; or the placement of a manufactured home on a foundation. Permanent construction does not include land preparation, such as clearing, grading and filling; nor does it include the installation of streets and/or walkways; nor does it include excavation for a basement, footings, piers or foundations or the erection of temporary forms; nor does it include the installation on the property of accessory buildings, such as garages or sheds not occupied as dwelling units or not part of the main structure. 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 the alteration affects the external dimensions of the building.
STRUCTURE. A walled and roofed building that is principally above ground, as well as a manufactured home and a gas or liquid storage tank that is principally above ground.
SUBDIVISION. The division or re-division of a lot, tract or parcel of land by any means into two or more lots, tracts, parcels or other divisions of land including changes in existing lot lines for the purpose, whether immediate or future, of lease, partition by the court for distribution to heirs or devisees, transfer of ownership or building or lot development.
SUBSTANTIAL DAMAGE. Damage of any origin sustained by a structure whereby the cost of restoring the structure to its before-damage condition would equal or exceed 50% of the market value of the structure before the damage occurred.
SUBSTANTIAL IMPROVEMENT. Any reconstruction, rehabilitation, addition or other improvement of a structure, the cost of which equals or exceeds 50 percent of the market value of the structure before “start of construction” of the improvement. This includes structures which have incurred “substantial damage”, regardless of the actual repair work performed. The term does not, however, include either:
(1) Any project for improvement of a structure to correct existing violations of state or local health, sanitary or safety code specifications which have been identified by the local code enforcement official and which are the minimum necessary to assure safe living conditions; or
(2) Any alteration of a “historic structure”; provided that, the alteration will not preclude the structure’s continued designation as a “historic structure”.
VARIANCE. A grant of relief to an applicant from the requirements of this chapter that allows construction in a manner otherwise prohibited by this chapter where specific enforcement would result in unnecessary hardship.
VIOLATION. A 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 this chapter is presumed to be in violation until such time as that documentation is provided.
WATERCOURSE. Any depression two feet or more below the surrounding land that serves to give direction to a current of water at least nine months of the year and that has a bed and well-defined banks.
(Ord. 2018-1, passed 4-3-2018)