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<br />o <br /> <br />o <br /> <br />o <br /> <br />~ <br /> <br />~BRW <br /> <br />~ A DAMES & MOORE GROUP COMPANY <br /> <br />Multi Objective Planning on the Roaring Fork River <br /> <br />n <br /> <br />o <br /> <br />Aspen to Glenwood Springs on the Roaring Fork and Fryingpan Rivers, Colorado <br /> <br />o <br /> <br />Flooding of the Roaring Fork River in <br />1995 showed the community the <br />seriousness of channel instability Jnd <br />inherent flood hazards. BRW's Water <br /> <br />o <br /> <br />Resources Group and Dames & Moore's <br />GIS Deparunent developed a region- <br />wide watershed Master PIJ,tl sponsored <br />by the Colorado Water Conservation <br />Board to help the community and <br />floodplain administrators understand the <br />causes of instability and define effective <br />methods of stabilization. <br /> <br />fJ <br /> <br />u <br /> <br />G <br /> <br />BRW's work characterized the stability <br />of the river channel based upon durmel <br />patterns, hydrologic, hydraulic, <br />geomorphic, and sediment transport <br />characteristics of the Roaring Fork and <br />l~ryingpan Rivers. A regional GIS <br />database developed by BRW provided a <br />comprehensive view of the entire <br />watershed for analysis and river <br />management. Current satellite imagery, <br />historic aerial photographs and USGS <br />information were used to develop base <br />mapping of the watershed. Natural river <br />sinuosity, meander amplitude, <br />wavelength, radius of curvature and <br />bankfull width were documented in the <br />GIS to define zones of instability and <br />identifY natural stabilization alternatives. <br />Recommendations for land use <br />identified actions for maintaining and <br />promoting channel stability. <br /> <br />o <br /> <br />u <br /> <br />D <br /> <br />o <br /> <br />o <br /> <br />D <br /> <br />D <br /> <br />D <br /> <br />~ <br /> <br /> <br />,..,. <br /> <br />...-I' <br /> <br />,;;~.r t~j <br />t!{ <br />\~l&. \ ~ <br />.,':f.,~ " "~ <br />{j I ~ <br />- .~~. ,~'" ':l F <br />.:. ',~: -'. . -' . <br />~ <br />