1997. United States. National Imagery and Mapping Agency. This datalayer is a polygon coverage representing larger perennial water bodies and rivers worldwide and was published as part of the USGS Global G... American Geological Institute.
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1995. National Geospatial-Intelligence Agency. This datalayer is a polygon coverage representing lakes, ponds and reservoirs located throughout current VMap1 geographic coverage areas. Features ...
2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the boundary between island ponds and islands at low resolution. GSHHG data are made available at 5 resolutions, ... United States. National Geospatial-Intelligence Agency.
2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the boundary between island ponds and islands at high resolution. High represents an 80 percent reduction in size... United States. National Geospatial-Intelligence Agency.
2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the boundary between island ponds and islands at intermediate resolution. Intermediate represents an 80 percent r... United States. National Geospatial-Intelligence Agency.
2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the boundary between island ponds and islands at low resolution. Low represents an 80 percent reduction in size a... United States. National Geospatial-Intelligence Agency.