Ordinance 1974-456 - Laserfiche WebLink

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1.343 Encouraging open space uses such as agriculture and recrea- tion. 1.35 To protect the hydraulic characteristics of the small water courses, including the gulches, sloughs and artificial water channels used for con- veying flood waters, which make up a portion of the urban drainage system by: 1.351 Regulating filling, dumping and channelization so as to main- tain natural storage capactiy and slow flow characteristics. 1.352 Prohibiting encroachment into the small watercourses to main- tain their water carrying capacity. 1.353 Encouraging uses such as greenbelt, open space, recreation and riding trails. SECTION 2.0 GENERAL PROVISIONS. 2.1 Jurisdiction: The jurisdiction of this section includes all lands adjacent to or within any watercourse within the city that would be inundated by the 100-year flood. 2.2 District Types: The Flood Regulatory District may be subdivi- ded into the Floodway District and the Flood Storage District. The Flood Regulatory District is defined by computing the 100-year flood plain limits under existing channel and flood plain conditions. The Floodway District for the purpose of subdividing the Flood Regulatory District is defined as that portion of the Flood Regulatory District that would remain assuming an equal degree of encroachment extending for a significant reach on both sides of the stream and causing no more than a one-half foot rise in the 100-year flood water' surface p~ofile or that portion of the Flood Regulatory District that would remain after excluding those outside portions of the Flood Regulatory District where the depth of flow for the 100-year flood is less than 2 feet or the surface flow velocity is less than 3 feet per second whichever critel~ia would assume the least encroachment on the flood plain. -3-