1994. 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... U.S. Army Corps of Engineers Navigation Data Center.
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1994. 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... U.S. Army Corps of Engineers Navigation Data Center.
2002. National Geospatial Intellience Agency (formerly the U.S. Defense Mapping Agency - DMA). This datalayer is a polyline coverage representing coastlines and international boundaries for every continent including Antarctica at a scale of 1... East View Cartographic.