The Invisibility of Sediment: a Socio-Geomorphic Perspective On a Great Challenge for Water and Catchment Management

G Mathias Kondolf, University of California Berkeley, Center for Environmental Design Research, Berkeley, CA, United States, Giacomo Parrinello, Sciences Po, Environmental History, Paris, France and Rafael J. P. Schmitt, University of California Berkeley, Department of Landscape Architecture and Environmental Planning, Berkeley, CA, United States