As the Nation's unbiased science bureau within the Department of the Interior, the U.S. Geological Survey (USGS) is well-situated to provide science in support of current and future river resource management decisions. The information gained through USGS research and monitoring efforts affects management actions and decisions which, in turn, benefit society. As anthropogenic actions and variations in natural systems continue, it is more important than ever to understand the effects of change on natural systems. Through the ongoing commitment of agency resources to riverine science, the USGS will continue to build upon nearly a century of natural systems research, monitoring, and modeling.