Hui Tang, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Section 4.7 Earth Surface Process Modelling, Potsdam, Germany, Luke McGuire, University of Arizona, Tucson, AZ, United States, Jason W Kean, USGS, Geologic Hazards Science Center, Golden, CO, United States and Joel Smith, U.S. Geological Survey, Denver, CO, United States