RFC commissioned an analysis of erosion sources in the Crystal River watershed (938 km2/ 362 miles2) with a focus on sediment sources in Coal Creek Basin (69 km2/ 26.6 miles2) to support the need for focused resource evaluations as part of the Crystal River Management Plan process. Study objectives include identifying the relative contribution of sediment supply to the mainstem Crystal River from Coal Creek Basin (Figure 1) compared to the upper Crystal River basin (342 km2/ 132 miles2), and to determine what proportion of erosion sources in Coal Creek Basin are controllable. Further objectives are to determine the causes and potential mitigation of the channel sedimentation and associated flooding in the vicinity of the community of Redstone, CO, located immediately downstream of the Coal Creek confluence along the mainstem Crystal River. The community analysis system NetMap (www.terrainworks.com) comprised of digital landscapes and analysis tools was used in all components of this analysis (Benda et al. 2007, 2009).