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<br />PURPOSE <br /> <br />The purpose of this report is to provide the results of a hydrologic analysis of potential <br />flood flows for the Eagle River from Minturn, Colorado to the Eagle-Garfield County line. <br />Utilizing consistent flood flows will in turn help facilitate consistent floodplain analyses <br />along the Eagle River in Eagle County. <br /> <br />AUTHORIZATION <br /> <br />This study was authorized and funded by the Colorado Water Conservation Board <br />(CWCB). Coordination was facilitated through CWCB and the Eagle County <br />Engineering Department. Hydrologic analysis was performed by Water Resource <br />Consultants, LLC. <br /> <br />SCOPE OF STUDY <br /> <br />The scope of this analysis is flood flows along the main-stem of the Eagle River from <br />Minturn, Colorado to the Eagle-Garfield County line. Figure 1 shows the location and <br />extent of the study reach and study area. The specific reach from the downstream city <br />limits of Minturn to the Eagle-Garfield County line was targeted as flood flows had not <br />been previously established for this entire reach of the Eagle or Colorado Rivers. Flood <br />flows were determined for the 10, 50, 100 and 500 year recurrence intervals. Tributary <br />streams were analyzed to the extent such analysis aided in determining peak flows on <br />the Eagle River. <br /> <br />STUDY METHODOLOGY <br /> <br />The study was performed by analyzing existing USGS stream gage records. Figure 1 <br />shows the location of gages utilized in the study. Additionally an areal analysis was <br />performed to provide detail where results from stream gauging stations were not <br />considered reliable. <br /> <br />1 <br /> <br />~ <br /> <br />Water Resource Consultants, LLC <br />.....l <br />