Laserfiche WebLink
<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />100-Year Flood Event - <br /> <br />The 100-year flood event may also be used for engineering design purposes <br /> <br />where a lower risk of failure than the 10- or 50-year flood is desired. However. <br /> <br />the most important use of the 100-year flood event lies in floodplain designation and <br /> <br />land use regulation as set forth in the state statutes. The State of Colorado considers <br /> <br />the 100-year frequency flood as the flood event to be used in designing and protecting <br /> <br />structures and dwellings for human occupation. Therefore. all floodplain regula- <br /> <br />tions are based upon the 100-year flood. Also. the area which would be inundated <br /> <br />by the 100-year flood may be delineated as an area of state interest as set forth in <br />the State's Land Use Bill. H.B. 1041. <br /> <br />500-Year Flood Event - <br /> <br /> <br />The 500-year flood event is useful in making the public aware that floods larger <br /> <br /> <br />than the 100-year flood can and do occur. The 500-year flood event can also be used <br /> <br /> <br />for regulating high risk developments within the floodplain such as nuclear power <br /> <br />plants. or the storage or manufacture of toxic or explosive materials. <br /> <br />Table 1 lists the discharges and water surface elevations for the 10-. 50-. <br /> <br />100- . and 500-year flood events at selected reference points for White River and <br /> <br />Sulphur Creek. <br /> <br />21 <br />