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6977
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6977
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Last modified
2/24/2015 9:43:39 AM
Creation date
2/24/2015 9:43:38 AM
Metadata
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Template:
City Ordinances
Passed
1/26/2015
Ordinance Number
6977
Bill Number
9248
Introdate
1/12/2015
Description
Revised floodplain management
Introduced By
Mr. Sharpe
Year
2015
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the tax base; all of which adversely affect the public health, safety and general <br /> welfare. <br /> B. General C auses Of The Flood Losses. These flood losses are caused by: <br /> 1. The cumulative effect of development in any delineated floodplain causing <br /> increases in flood heights and velocities; and <br /> 2. The occupancy of flood hazard areas by uses vulnerable to floods, hazardous to <br /> others, inadequately elevated or otherwise unprotected from flood damages. <br /> C. Methods Used To Analyze Flood Hazards. The Flood Insurance Study (FIS) that is <br /> the basis of this Chapter uses a standard engineering method of analyzing flood <br /> hazards which consist of a series of interrelated steps. <br /> 1. Selection of a base flood that is based upon engineering calculations which <br /> permit a consideration of such flood factors as its expected frequency of <br /> occurrence, the area inundated, and the depth of inundation. The base flood <br /> selected for this Chapter is representative of large floods which are characteristic <br /> of what can be expected to occur on the particular streams subject to this <br /> Chapter. It is in the general order of a flood which could be expected to have a <br /> one percent (1%) chance of occurrence in any one (1) year as delineated on the <br /> Federal Insurance Administrator's Flood Insurance Study, and illustrative <br /> materials for St. Louis County dated August 2, 1995February 4, 2014, as <br /> amended, and any future revisions thereto. <br /> 2. Calculation of water surface profiles are is based on a standard hydraulic <br /> engineering analysis of the capacity of the stream channel and overbank areas to <br /> convey the regulatory flood. <br /> 3. Computation of a floodway required to convey this flood without increasing flood <br /> heights more than one (1) foot at any point. <br /> 4. Delineation of floodway encroachment lines within which no development is <br /> permitted that would cause any increase in flood height. <br /> 5. Delineation of flood fringe, i.e., that area outside the floodway encroachment <br /> lines, but still subject to inundation by the base flood. <br /> Article II. General Provisions <br /> Section 410.040. Lands To Which This Chapter Applies. <br /> [R.O. 2011 §15.16.040; Ord. No. 6495 §1(part), 2004] <br /> This Chapter shall apply to all lands within the jurisdiction of the City of University City, <br /> MO identified as numbered and unnumbered A Zones and AE Zones on the Flood <br /> Insurance Rate Maps (FIRMs) for St. Louis County on map panels 29189CO211 K, <br /> Page 2 of 7 <br />
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