A. “Designated floodway” means an area consisting of the channel of a stream and/or that portion of the adjoining floodplain which would serve both to adequately accommodate floodwaters to be expected at frequent intervals in periods of heavy rainfall, and which would be required to reasonably provide for the construction of flood control projects for the passage of design flood by means of flood control channels, and including the lands necessary for the construction of project levees.

B. “Design flood” means the selected flood against which protection is provided, or eventually will be provided, by means of flood protective or control works. When a federal survey has been authorized, the design flood will be determined by the appropriate federal agency and in all other cases it will be determined by the Director of Public Works. It shall be the basis for design and operation of a particular project after full consideration of flood characteristics, frequencies and potentials, and economic and other practical considerations.

C. “Floodproof structure” is any structure which, in the opinion of the Director of Public Works, is designed and constructed to resist flotation, destruction or major damage by the maximum flood predicted for the structure site by the U.S. Army Corps of Engineers or the Director of Public Works.

D. “Restrictive zone” means the portion of the floodway in its natural state or as modified by grading and fill, delineated by the flood level to be expected in a storm of 100-year intensity, constituting the overflow area from the designated floodway or the outlying or fringe area located between the limits of the designated floodway and the limits of the floodplain, where inundation which could endanger life, property and general welfare may occur, but where frequency of flooding and depths and velocities are generally low.

E. “Structure” as herein used does not include public utility facilities or electric, gas or communication lines lawfully present. (Ord. 1281 § 2, 1970; Ord. 1212 § 1, 1969; prior code § 33.525(B)).