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(14) Obstruction means any dam, wall, wharf, embankment, levee, dike, pile, abutment, projection,
<br /> excavation, channel modification, culvert, building, wire, fence, stockpile, refuse, fill, structure, or
<br /> matter in, along, across, or projecting into any channel, watercourse, or regulatory flood plain
<br /> which may impede, retard, or change the direction of the flow of water, either in itself or by
<br /> catching or collecting debris carried by such water.
<br /> (15) Principal use or structure means all uses or structures that are not accessory uses or structures.
<br /> (16) Reach means a hydraulic engineering term to describe a longitudinal segment of a stream or river
<br /> influenced by a natural or man-made obstruction. In an urban area, the segment of a stream or
<br /> river between two consecutive bridge crossings would most typically constitute a reach.
<br /> (17) Recreational vehicle means a vehicle that is built on a single chassis, is 400 square feet or less
<br /> when measured at the largest horizontal projection, is designed to be self-propelled or
<br /> permanently towable by a light duty truck, and is designed primarily not for use as a permanent
<br /> dwelling but as temporary living quarters for recreational, camping, travel, or seasonal use. For
<br /> the purposes of this article, the term recreational vehicle shall be synonymous with the term travel
<br /> trailer/travel vehicle.
<br /> (18) Regional flood means a flood which is representative of large floods known to have occurred
<br /> generally in Minnesota and reasonably characteristic of what can be expected to occur on an
<br /> average frequency in the magnitude of the 100-year recurrence interval. Regional flood is
<br /> synonymous with the term "base flood" used in a flood insurance study.
<br /> (19) Regulatory flood protection elevation means an elevation no lower than one foot above the
<br /> elevation of the regional flood plus any increases in flood elevation caused by encroachments on
<br /> the flood plain that result from designation of a floodway.
<br /> a. The regulatory flood protection elevation within the floodway and flood fringe districts, except
<br /> for Lake Minnetonka, shall be established by adding 1.0 foot to the base flood water surface
<br /> elevations within floodway listed in the floodway data table contained in the flood insurance
<br /> study. Regulatory flood protection elevations between cross sections shall be interpolated.
<br /> b. The regulatory flood protection elevation for Lake Minnetonka shall be 932.5 MSL.
<br /> c. The regulatory flood protection elevation within the general floodplain district shall be
<br /> calculated by a qualified registered professional engineer in accordance with procedures set
<br /> forth in this article.
<br /> (20) Structure means anything constructed or erected on the ground or attached to the ground or on-
<br /> site utilities, including, but not limited to, buildings, factories, sheds, detached garages, cabins,
<br /> manufactured homes, recreational vehicles not meeting the exemption criteria specified in section
<br /> 78-1131(1) of this article and other similar items.
<br /> (21) Substantial damage means damage of any origin sustained by a structure where the cost of
<br /> restoring the structure to its before damaged condition would equal or exceed 50 percent of the
<br /> market value of the structure before the damage occurred.
<br /> (22) Substantial improvement means, within any consecutive 365-day period, any reconstruction,
<br /> rehabilitation (including normal maintenance and repair), repair after damage, addition, or other
<br /> improvement of a structure, the cost of which equals or exceeds 50 percent of the market value
<br /> of the structure before the"start of construction"of the improvement. This term includes structures
<br /> that have incurred"substantial damage,"regardless of the actual repair work performed.The term
<br /> does not, however, include either:
<br /> a. Any project for improvement of a structure to correct existing violations of state or local
<br /> health, sanitary, or safety code specifications which have been identified by the local code
<br /> enforcement official and which are the minimum necessary to assure safe living conditions.
<br /> b. Any alteration of an "historic structure," provided that the alteration will not preclude the
<br /> structure's continued designation as an "historic structure." For the purpose of this article,
<br /> "historic structure" shall be as defined in Code of Federal Regulations, Part 59.1.
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