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<br />Roaring Fork River Watershed Analysis
<br />for the Colorado Water Conservation Board
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<br />Flooding of the Roaring Fork River in 1995 prompted
<br />awareness that past individual efforts to control the
<br />river did not successfully protect the community from
<br />inherent flood hazards and channel instability. Man-
<br />made controls constructed to protect property from
<br />flooding actually intensified stresses on the river
<br />channel and exacerbated channel migration and bank
<br />erosion. Channel instability has actually been a greater
<br />hazard to the community than flooding,
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<br />Matrix Design Group, Inc. team, while at BRW, Inc.,
<br />developed a program under the direction of the
<br />Colorado Water Conservation Board to help the
<br />community and floodplain administrators understand
<br />the causes of instability and define effective methods of
<br />stabilization, The project won an Honor Award for
<br />Outstanding Achievement by the Colorado Association
<br />of Stormwater and Floodplain Managers in 1999,
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<br />The project characterized the stability of the river
<br />channel based upon patterns, hydraulic parameters,
<br />geomorphic, and sediment transport characteristics, In
<br />conjunction with the analysis, the regional GIS database
<br />developed under this project provided a comprehensive
<br />view of the entire watershed, rather than management
<br />by jurisdictional boundaries, The GIS database
<br />organized, managed, analyzed, and presented spatial
<br />information as it related to channel instability and river
<br />management issues, High resolution aerial imagery and
<br />USGS information, as well as historic aerial
<br />photographs were used to map the watershed,
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