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<br />1 <br /> <br /> <br />INTRODUCTION <br /> <br />This thesis is a small part of the larg~r Winds0r Project. <br /> <br />The Windsor Project has be~n an extensive, detailed environmental <br /> <br />geology study of an area in northern 'Colorado that lies between the <br /> <br />cities of Fort Collins, Loveland and Greeley. It Is 450 square Illile <br /> <br />area lying east of the foothills 'in the Colorado piedmont, <br /> <br /> <br />The principal objectives of this thesis are 1) to define <br /> <br /> <br />drainage basins; 2) to define areas susceptible to flooding; 3) to <br /> <br /> <br />evaluate flood magnitude and frequency -- all in the Windsor area. <br /> <br />Eight 7"- minute'quadrangle maps showing drainage basins and <br /> <br />areas of past flooding ,have been prepared, Drainage basins, are <br /> <br />areas of' surface v..-ater collection, and basin parameters such as <br /> <br />size, shape and slope are influential on floods that occur, within <br /> <br />the basins. Areas of past flooding have been mapped because these <br /> <br />are areas where future flooding can be expected. <br /> <br />Evaluation of' flood magnitude and frequency is based on <br /> <br /> <br />1) publi3hed observations of historic fl~ods; 2) eye witness accounts <br /> <br /> <br />of floods; and 3) comparison of flood magnitudes mapped, with gaged <br /> <br /> <br />or estimated historic flood magnitudes. An almost complete lack of <br /> <br />hydrologic d~ta within the Wiudsor area prevents a statistical <br /> <br />evaluation of flood magnitude and frequency, <br /> <br />, <br /> <br />, <br />