Professor of Geography, KU Leuven, Belgium

Dept of Earth & Environmental Sciences, Geography & Tourism Research Group, KU …

Distinguished Professor, Global Institute for Water Security, University of Saskatchewan

California Institute of Technology

Professor of Civil and Environmental Engineering, University of Illinois Urbana-Champaign

Departament of Geography, University of Valencia

Professor of Geography, University of California, Santa Barbara

Geography Department, University of Zurich

US Forest Service, Pacific Northwest Research Station (retired)

Professor of Geology, Arizona State University