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<br />~24- <br /> <br />The results of the sediment (up to boulders) and debris transport <br /> <br />can be undermined foundations, structural collapse or damage and <br />deposition of thick layers of boulders, gravels, sands and silts <br />in dreas where slow~r velocities exist (such as the meadows). <br /> <br /> <br />The durdtion of the flooding is especidlly important where erosion <br />occurs. These erosive forces may cause the relocation of themdin <br />channel during floods, especially at curves and oxbows in the medndering <br />portions of the creek. For this reason,d 100 year flooded area map <br />for Gore Creek may represent a different level of hazard to properties <br />near and within its limits than would a similar map for a slow-moving <br /> <br />stream or river. Examination of properties for flood hazard should <br />include both a comparison of the site elevations with the 100 year <br />flood elevation and the susceptibility of the property to erosion or <br />depositioll. <br /> <br />FIGIJREIV-l <br /> <br />Bridge near West Vail at Section 3 <br />100 Year Water Depth 9.7 feet <br /> <br />Debris <br /> <br /> <br />The flooding in many areas extends into the wooded areas of the <br />meadows and streamsides. The results are that any floatable or erodable <br />debris maybe picked up and cdrried downstream. In addition to this <br />natural debris, the smaller bridges which may be washed out during <br />these floods present a significant hazard to downstredm bridges . The <br />bridge debris may restrict not only water passage efficiency of any <br />downstream bridges. but may also actasa battering rdm to collapse <br />or weaken these other bridges. Consequently, any fragile bridges or <br />large potential debris in the upstream reaches constitutes d relatively <br /> <br />signifiCdnt ha~ard to each structure below it. <br /> <br />FIGIJREIV-2 <br /> <br />Foot Bridge dt Willow Bridge Road <br />100 Year Water Depth 0.3 feet <br />