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114.~ <br /> <br />114.5 <br /> <br />Determine the specific flooding threat at <br />the site of the proposed conditional use and <br />determine whether the use is~,locat?d in ' <br />a floodway or flood fringe ~roa by. . <br /> <br />(1) Calculation of water surface elevations <br /> and flood protection elevations bas'ecl.upon <br /> · ' a hydraulic analysis of the capacity of <br /> the stream chann-~l and overbank areas to <br /> convey the regulatory flood. -Flood pro- <br /> tection elevations shall be one i~oot above <br /> tho water plus the increase in flood heights <br /> caused by the proposed development as <br /> provided in the follo~ing .paragraph B. <br /> <br />Computation of the 'flood:,.:ay required to <br /> convey this flood ~jithout increasing flood <br />· heights to an extent ~',~hich would cause <br />substantial upstream or downstream damage <br />to existin?, or reasonably anticipated'future <br />development. Computation of increases in <br />flood heights caused by any encroachment <br />shall be based upon the reasonable assumption <br />that there will be an equal degree of <br />ermroachment on both sides of the stream <br />within that reach. Generally, any increase <br />in floo~ stages attributable to encroachments. <br />on the flood plain of any river o.r Stream <br />shall not exceed 0.5 feet in any one reach <br />or for the cumulative effect of several reache~o <br /> <br />Establishment of Zoning Districts. The flood plain areas <br />w~thin the jurisdiction of this Ordinance are hereby divided <br />~nto two districts: Floodway Districts (F~!) and Flood Fringe <br />Districts (FF), The boundaries of these districts shall be <br />shown on the Official Zoning Map. ~ithin these district~ <br />all uses not allowed as permitted uses or permissable as <br />Conditional Uses shall be prohibited. <br /> <br />Permit applications for areas designated as unnumbered A <br />Zones by the Flood Insurance Study?or the City of Champlin <br />shall be evaluated in accordance ~ith procedures in Section <br />114.3. Based on this evaluation, the area in question shall <br />be assigned to the Floodway District or the Flood Fringe <br />District as appropriate and a flood protection elevation <br />sha~l be determined. <br /> <br />F~ood~vay District (FU). <br /> <br />A. Permitted Uses. The follo:.~ing uses having a tow flood <br /> damage potential and not obstructing flood flows shall <br /> <br /> <br />