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Last modified
7/29/2009 10:38:35 PM
Creation date
10/11/2006 11:50:21 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8030
Description
Section D General Correspondence-Other Organizations/Agencies
State
CO
Date
5/1/1972
Author
USWRC
Title
US Water Resources Council-1972-1977-Flood Hazard Evaluation Guidelines for Federal Executive Agencies
Water Supply Pro - Doc Type
Report/Study
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<br />13 <br /> <br />o~ <br />~ <br />(j) <br /> <br />Coastal margins, similarly, should exclude buildings in the areas <br />subject to major wave attack and erosional change which accompany <br />overflow. <br /> <br />Floodway Fringe. The area outside the floodway but still in the <br />flood hazard zone is usually called the "floodway fringe". Developments <br />are permitted providing their elevations where flood damage begins <br />are not below a specified level (See Guideline 11 for an example). <br /> <br />Great Floods. Floods exceeding the lOO-year flood have occurred in <br />many areas of the United States. No part of the country is immune <br />from such occurrences, and it has become a standard practice of <br />agencies dealing with flood problems to use a flood greater than the <br />100-year to indicate what can occur at different locations in a floodplain. <br />The Corps of Engineers in its floodplain information reports uses a <br />"Standard Project Flood" or, for coastal areas, a "Standard Project <br />Hurricane", to show flood depths. great..r than the 100-year depths, <br />that could be experienced. The Tennessee Valley Authority uses <br />a "Maximum Probable Flood" in a similar manner in its area of <br />operations, and the Soil Conservation Service uses a similar large <br />magnitude flood in its flood hazard analyses. Inasmuch as floods of <br />this large size are seldom given any particular frequency, they will <br />be referred to as floodplain floods in the g)lidelines. <br /> <br />(4)..... DETERMINE WHETHER THERE ARE EXISTING <br />LAWS OR STATUTES OF THE FEDERAL GOVERNMENT, RULES <br />OR REGULATIONS OF OTHER FEDERAL AGENCIES, OR LAWS, <br />STATUTES, ORDINANCES, ETC., OF STATE OR LOCAL GOVERN- <br />MENTS THAT PROVIDE STANDARDS FOR REGULATION OF THE <br />FLOODPLAIN UNDER STUDY. IN CASES WHERE THOSE STANDARDS <br />ARE EITHER MORE STRINGENT THAN THOSE BASED ON THESE <br />GUIDELINES, OR ARE APPLICABLE TO SITUATIONS OR CONDITIONS <br />NOT COVERED BY THESE GUIDELINES, THEY SHOULD BE CONSIDERED <br />FOR THE EVALUATION OF FLOOD HAZARD IN THAT AREA. <br /> <br />By "more stringent" is meant a standard that is more severe or <br />restrictive in order to provide greater safety or to reduce flood hazard <br />more effectively. Federal agenices should support the States and <br />local governments to make their rules, regulations, standards etc. <br />fully effective. <br />
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