Oak Ridge National Laboratories, U.S. Bureau of Census, National Oceanographic and Atmospheric Administration, U.S. Army Corps of Engineers, Vanderbilt Engineering Center for Transportation Operations and Research, Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS), U.S. Geological Survey, and Vanderbilt Engineering Center for Transportation Operations and Research Vanderbilt University. The National Waterway Network is a comprehensive network database of the nation's navigable waterways. The data set covers the 48 contiguous states... Bureau of Transportation Statistics.