Dr. Simon is a geomorphologist with 34 years of experience in mechanistic analysis of unstable-channel systems, channel evolution, streambank erosion, cohesive-sediment entrainment, the role of riparian vegetation, “reference” sediment-transport rates, and river restoration, working on projects throughout the United States and around the globe. His expertise is in quantifying the effects of imposed channel and landscape disturbances, and mitigation measures on channel response and sediment loads. He is the author of more than 100 technical publications and the editor of several books. Dr. Simon has designed, conducted, and managed projects focusing on the adjustment and evolution of channel systems, development of a mechanistic bank-stability model for stream restoration, sources and magnitudes of sediment delivery, quantifying potential sediment-load reductions according to restoration strategy, determining “reference” rates of sediment transport for water quality targets.