Thomas Dunne conducts field and theoretical research in fluvial geomorphology and in the application of hydrology, sediment transport, and geomorphology to landscape management and hazard analysis. He has worked in many parts of the world, including Kenya, where he studied the effects of land use on hill-slope erosion and river-basin sedimentation, and how climate and hydrology affect long-term hill-slope evolution. At the University of Washington, he focused on land sliding and debris flows, as well as tephra erosion and debris-flow sedimentation resulting from the eruption of Mount St. Helens. The resource management issues he studied in the Pacific Northwest include the impacts of gravel harvesting on river channels and floodplains and the impacts of timber harvesting on erosion and sedimentation. Since coming to the Bren School in 1996, he has studied erosion in the Andes, and hydrology, sediment transport, and floodplain sedimentation in the Amazon River basin of Brazil and Bolivia and the Central Valley of California.