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. . A-6 . .' 11-12-1 11-12-2 11-12-2 11-12-3 IC) As used in this Ordinance, the following words or phrases are defined as follows: IC) Where interpretation is needed as to the exact location of the boundaries of flood plains, the City Engineer shall make the necessary interpretation. The intermediate regional flood elevation for the point or points. in question shan be the governing factor in determining the actual boundaries. Any official zoning map or maps of the City shall incorporate the flood plains designed by the City CounciL Such map shall show the flood plain as 01 IOpen) or PUD (Planned Unit Development) Zone, In the case of PUD Zone. any plans approved for the zone by City Council shall so designate the flood plains. . 7. Minimize victimization of unwary home and land purchasers. (B) . 8. Minimize the pollution of water by prohibiting the disposal of garbage and other solid waste materials in flood plains. . 1. "Designated flood plain" means the area designated as a flood plain by official action of the City Council with the prior concurrence _ of the Colorado Water Conservation Board. . 2. uFlood plainu means an area in and adjacent to a stream which area is subject to flooding as the result of the occurence of an interm~diate regional flood and which area thus is so adverse to past, current, or foreseeable construction or land use as to constitute a significant hazard to public health and safety or to property. 11-12-3: USE OF DESIGNATED FLOOD PLAINS: . (A) No development, use, fill, construction or alteration on or over any portion of a designated flood plain shall be permitted which would cause or result in any of the following: . 3, "Intermediate regional flood" means a type of flood, including the water surface elevation and territorial occupation thereof, which can be expected to OCCur at any time in a given area based upon recorded historical precipitation and other valid data, but with an average statistical one percent (1%) chance of being equalled or exceeded during anyone year, The term is used interchangeably with a one percent (1 %) flood or hundred year flood. 4. uLow hazard zoneu means that area of the flood plain 'in which the waters of an intermediate regional flood will not either attain a depth greater than one foot 11') or reach a velocity greater than three feet (3') per second, 5. "'Stream" means any natural channel or depression through which water f1a~ . either . ~ont.inuously, intermittently ar periodically, including any artifiCial modification of the natural channel or depression. 1. The storage or processing of materials that in times of flooding are buoyant, flammable, explosive or otherwise potentially injurious to human, animal or plant life. . 2, The disposal of garbage or other solid waste materials, 3. The human occupation of structures, either fixed or mobile, for residential purposes, either permanent or temporary. . 4. Substantial solid debris being carried downstream by floodwaters, 5. Any obstruction which would impair the flow capacity of a designated flood plain so as to cause foreseeable damage to others, wherever located. . . 11-12-2: DESIGNATION OF FLOOD PLAINS: The flood plains of the City . of. Westmin~ter are hereby defined as encompassing all t~ose land are~ of the CIty in and ad)acem to a stream which lies within the area which would be mundated by an intermediate regional flood as heretofore or hereafter approved by the, Colorado Water Conservation Board; which streams are those known as Woman s Cr,eek, Walnut Creek. Big Dry Creek, Little Dry Creek, and Shaw Heights Branch of Little Dry Creek, (B) Except as prohibited heretofore, the low hazard zone of a designated flood plain, if the low hazard zone has been identified, may be used for any lawful purpose; provided that: . 1. Such use shall not cause a measureable enlargement of the flood plain on lands other than those owned by the user, . IA) True and official copies of maps of flood plains so designated by the City Coun~11 shall be kept and maintained for public inspec1ion in the offices of the City Engineer. Such maps shall be in sufficient detail and scale so as to permit ready identification of the flood hazard area, including the low hazard area, ii any, by ground inspection or survey. 2. Any building or structure, whether fixed or mobile, designed for human occupancy or the storage of property, and occupying a space greater than one hundred (100) square feet, shall be constructed or located so that any ex'ernal wall shall be not less than fifteen feet (15') from the inner boundary of the low hazard zone. . 3, The lower floor of any such building or structure shall be not less than one foot (1') above the maximum water elevation of the computed intermediate regional flood. . .