1976 023 Ordinance - Laserfiche WebLink

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-z- and which are reasonably 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 occur on the average once every 100 years. (2) Determine the specific flooding threat at the site of the pro- posed Special Exception use and determine whether the use is located in a floodway or floodway fringe area by: (a) Calculation of water surface elevations and flood pro- tection elevations based upon hydraulic analysis of the capacity o£ the stream channel and overbank areas to convey the regional flood. Flood protection elevations shall be 1£oot above the water surface elevations of the regional flood. (b) Computation of the £loodway required to convey this £lood without increasing flood heights to an extent which would cause substantial upstream or downstream damage to existing or reasonably anticipated future development. Computation of increases in flood heights caused by any encroachment shall be based upon the reasonable assumption that there will be an equal degree of encroachment on both sides of the stream within that reach. Generally, any increase in flood stages attributed to encroachments on the flood plain of any river or stream shall not exceed 0.5 ft. in any one reach or for the cumulative effect of several reaches. (3) Evaluate the ef£ects of the proposed use upon the public health, safety, and general wel£are in light of the purposes of this ordinance and the standards established herein and deny, grant, or conditionally grant the application for the proposed use. 1.3 STATEMENT OF PURPOSE It is the purpose o£ this Ordinance to promote the public health, safety, and general welfare and to minimize those losses described in Section 1.21 by provisions designed to: 1.31 Restrict or prohibit uses which are dangerous to health, safety, or property in times of flood or cause excessive increases in flood heights or velocities. 1.32 Require that uses vulnerable to floods, including £acilities which serve such uses, be protected against £lood damage at the time of initial construction. 1.33 Protect individuals from buying lands which are unsuited for intended purposes because of flood hazard. SECTION 2.0 GENERAL PROVISIONS 2.1 LANDS TO WHICH ORDINANCE APPLIES AND ESTABLISHNIIINT OF FLOOD PROTECTION ELEVATION 2.11 This Ordinance shall apply to all lands within the jurisdiction of