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<br />Friday, July 12 <br /> <br />8:30 a.m.-10:00 a.m. <br /> <br />. <br /> <br />Recent Corps of Engineers' Hydrologic Investigations <br />for Rocky Mountain Front Range Streams <br /> <br />William Doan <br />U. S. Army Corps of Engineers <br />Omaha District <br /> <br />The twenty-years since the Big Thompson Flood provides for an excellent opportunity to <br />summarize and reflect on hydrologic methodologies for Front Range water resources projects. <br />Summaries and descriptions of the projects will be represented in this paper, with special <br />emphasis on the hydrologic methodology performed for each project. Additionally, a wish list <br />of future improvements to the current "stat-of-the-art" hydrologic techniques are presented that <br />would eventually lead to improved techniques that would result in more accurate hydrologic <br />estimates for Front Range streams. <br /> <br />Various water resources projects the Corps related Front Range water resources projects during <br />the past twenty years involve proposed flood control projects (Ralston-Leyden Creeks, Van <br />Bibber Creek, Boulder Creek, etc.) flood plain information studies (Clear Creek, Boulder Creek, . <br />etc) and operational studies for existing Corps Reservoirs (Cherry Creek, Chatfield, Bear Creek, <br />etc.) . <br /> <br />Hydrologic methodologies used in the analyses of the various projects have included statistical <br />streamflow analyses (Lp ill, mixed population, regional skew analysis, etc.), rainfilJl/runoff <br />models (SWMM, RECI, CUHP, etc.), and reservoir operational modelling (SSARR, HECIF, <br />HEC5, etc). <br /> <br />Hoped for improvements to the "state-of-the-art" for hydrologic techniques range from better <br />areal precipitation to paleohydrology to simply more accurate and numerous gaged streamflow <br />locations. <br /> <br />. <br /> <br />9 <br />