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<br />Purpose and Scope <br /> <br />This report was prepared to assist local off:ldals in planning the use and <br /> <br />regulations of the floodplain areas, swoh that flood hazards and future <br /> <br />damages are elimi.nated or minimized. This u~port includes information on <br /> <br />historical floods and the nature and exl.:~;nt of probable future floods <br /> <br />along a 1.0 mile reach of the St. \Train Creek west of East Count~' "f,ine <br /> <br />Road. <br /> <br />ThE~ following is a brieF summary of t:h::~ seope of the \.;ork for thi s <br /> <br />project: <br /> <br />1. Calculation of water surface profiles for the 10-, ';0-, 100-" <br />and SOD-year flood events. <br /> <br />2. Delineation of the 100 and SOO.-vear fJ oorlplain boundar:Les. <br /> <br />3. <br /> <br />Development of discharge prof i les icc1icating <br />magnitudes of the 10-, SO-, lC()-, and 500-year <br /> <br />the relative <br />flood €lJents. <br /> <br />4. Determination of floodways based 'JC1 encroachp.lE~nt resultinR in a <br />maximum increase in the energy gIad(~ line of 1.0 feet. <br /> <br />5. Preparation of a floodpl ain information r'~port describi.ng the <br />characteristics of the study area, historical flooding, <br />tabulation of pertinent floodpla.in infor-nation, And reduced <br />copies of floodplnin maps and profiles. <br /> <br />The floodplain delineations and flood profil es presented in this report <br /> <br />are based on overbank and channel conditions thllt existed at the time the <br /> <br />study area was mapped. <br /> <br />Flood profiles alld floodplain delineCl.tions are <br /> <br />often altered by transportation improvemerlts, floodplain development, <br /> <br />f] ood hazard mitigation structures, or DEltural causes. <br /> <br />Pr:i.or to the <br /> <br />utilization of this report for planning 0]" design purposes, the tlBer is <br /> <br />advised to contact Boulder County or the Co J crado Wate:r Conservation Board <br /> <br />to determine if any information presented 1.TI thi.s report has been amended. <br /> <br />, <br />" <br />