The Geomorphology and Sediment Transport Laboratory (GSTL) is a new U.S. Geological Survey (USGS) facility located in Golden, Colorado on the eastern side of North Table Mountain. The USGS has a long and distinguished record of scientific research on flow and sediment transport in rivers; this new lab represents a continued commitment to basic and applied research in this important area. Work at GSTL falls into three primary categories: basic research on fluid and sediment-transport mechanics governing the morphodynamics of rivers; applied research dealing with specific issues in American rivers; and software development, verification and dissemination for models of physical processes in rivers. Most GSTL projects comprise field, laboratory, and computational components. For more specific details, see the Capabilities section or explore our current projects listed below.