River channel adjustments through sediment transport and bank erosion processes, integrated with ecohydraulics restoration for aquatic physical habitat structure; Soil erosion processes and pollutant transport on disturbed land surfaces, including surface mining, bioenergy crop conversions, and stormwater runoff; Biogeochemical processes in forested watersheds impacted by acid pollutant deposition in the Great Smoky Mountains National Park; Water resource management of the Tennessee Valley Authority river system, examining potential effects of climate and land use change.