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<br />appurtenant structures. For structU!'efl and uses of t:his tYPE! on the <br /> <br />smaller tributaries and in areas where the risk of structural :f:.ailurE~ <br /> <br />is economically acceptable and 1:hp hazard to life a.nd property <br /> <br />nonexistent, the use of the more frec[uent floods as design (:ritel-ia <br /> <br />may be considered. <br /> <br />100-year flood event --. <br /> <br />The 100-year flood event may also "2! used for enginee'Ting desi gn <br /> <br />purposes where a lower risk of faiJul'c than the ] 0-- or sO.'year flood <br /> <br />event is desired. <br /> <br />Hm'lever, the most :!mportant use of the ] OO-year <br /> <br />flood event lies in floodplain designat ion and land use regulat::ion as <br /> <br />set forth in the state statutes. The State of Colorado considers the <br /> <br />100-year frequency flood as the flood f~vent to be used in design:ing <br />and protecting structures and d",~I,! 11 ings tor hUTnHD occl1.pation. <br />Therefore, all floodplain regulations are based upon the 10O-year <br /> <br />flood event. Also, t"he area ~.;rhich \lTould be tnundated by the lOO-year <br /> <br />flood may be delineated as art arEa of ::;tate interest a.s E;et forth in <br /> <br />H,B, 1041, the State's Land Use Statnte, <br /> <br />SOO-year flood event ...- <br /> <br />The SOO-year flood event is usef'u1 1.1'1 making the public ,aware that <br /> <br />floods larger than the IOO-year flood can and do occur. Just because <br /> <br />a person is living above or outside the 100-year flood boundary does <br /> <br />not mean that he is completely sat" from flooding. <br /> <br />Th" SOO-year <br /> <br />flood event can also be used for re'tu.~llt111g high risk developments <br /> <br />within the floodplain sllch as nuclear .)t:rl,ll~r plants, or th€~ storage or <br /> <br />manufacture of toxic or explosive mat.,ials. <br /> <br />18 <br />