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vulnerable to floods, hazardous to others, inadequately elevated, or otherwise unprotected from flood damages. 3. Methods Used To gaaalyze Flood Hazards The Flood Insurance Study (FIS) that is the basis of this ordinance uses a standard engineering method of analyzing flood hazards which consist of a series of interrelated steps. ao Selection ora base flood that is based upon engineering calculations which permit a consideration of such flood factors as its expected frequency of occurrence, the area ~nundated, and the depth ofinunj:lation. The base flood selected for this ordinance is representative of large floods which are characteristic of what can be expected to occur on the particular streams subject to this ordinance. It is in the general order of a flood which could be expected to have a one percent chance of occurrence in any one year as delineated on the Federal Insurance Administrator's Flood Insurance Study, and illustrative materials dated August 2, 1995 as amended, and any future revisions thereto. b° Calculation of water surface profiles are based on a standard hydraulic engineering analysis of the capacity of the stream channel and overbank areas to convey the regulatory flood. Co Computation of a floodway required to convey this flood without increasing flood heights more than one (1) foot at any point. Delineation of floodway encroachment lines within which no development is permitted that would cause any increase in flood height. eo Delineation of flood fringe, i.e., that area outside the floodway encroachment lines, but still subject to inundation by the base flood. Section 15.16.030 Statement of purpose. It is the purpose of this ordinance to promote the public health, safety, and general welfare; to minimize those losses described in Section 15.16.020.1; to establish or maintain the community's eligibility for participation in the National Flood Insurance Program (NFIP) as defined in 44 Code of Federal Regulations (CFR) $9.22(a)(3); and to meet the requirements of 44 CFR 60.3(d) by applying the provisions of this ordinance to: Restrict or prohibit uses that are dangerous to health, safety, or property in times of flooding or cause undue increases in flood heights or velocities; Require uses vulnerable to floods, including public facilities that serve such uses, be provided with flood protection at the time of initial construction; and Protect individuals from buy, ing lands that are unsuited i'or the intended development purposes due to the flood hazard. Article 2 General Provisions Section 15.16.040 Lands to which this ordinance applies. This ordinance shall apply to all lands within the jurisdiction of the City identified as numbered and · um~umbered A zones and AE zones, on the Flood Insurance Rate Map (FIRM) and Flood Boundary and Floodway Map (FBFM) dated August 2, 1995 as amended, and any future revisions thereto. In all areas covered by this ordinance, no development shall be pemfitted except through the issuance of a