1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a line coverage representing varous drainage feature types located throughout DCW (Digital Chart of the World) geographic coverag... National Imagery and Mapping Agency.
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1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a point coverage representing hydrographic drainage features located throughout DCW (Digital Chart of the World) geographic cover... National Imagery and Mapping Agency.
1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polygon coverage representing drainage features located throughout DCW (Digital Chart of the World) geographic coverage as of 1... National Imagery and Mapping Agency.