As the world's population continues to grow, the continual development of riparia areas stresses stream ecosystems. These collected articles aim to provide researchers, aquatic resource managers, land use planners and others with the results of recent studies of the effects of urbanization on stream ecosystems. By presenting fifteen case studies and five regional comparisons, the editors of these proceedings hope to help protect streams form the damages of what they recognize as inevitable urbanization. Foci of the studies include the effects of urbanization on biological diversity and populations, geology, hydrology, and economics.