2007. World Wildlife Fund (WWF). This drainage direction map for Central America defines the direction of flow from each cell in the conditioned digital elevation model to its stee... U.S. Geological Survey.
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2007. World Wildlife Fund (WWF). HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales)flow accumulation maps define amount of upstream a... U.S. Geological Survey.
2007. World Wildlife Fund (WWF). HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales)flow accumulation maps define amount of upstream a... U.S. Geological Survey.
2002. EROS Data Center. The grayscale conterminous United States shaded relief data were derived from National Elevation Dataset (NED) data, and show the terrain of the co... National Atlas of the United States.
1820. Center for Spatial and Textual Analysis. This layer is a georeferenced image of a map of the United States. The original map was published in 'A Complete Genealogical, Historical, Chronolo... Stanford Digital Repository.
2014. Geological Survey (U.S.). This line shapefile shows elevation contour lines for the conterminous United States. The map layer was derived from the 100-meter resolution eleva... National Atlas of the United States.
1706. Rumsey, David, 1944-, L'Isle, Guillaume de, 1675-1726, and Liebaux, Henri. This layer is a georeferenced image of a map of Russia (1706). The original map appears in "(Atlas de Geographie)." The historic map layers in the ... Cartography Associates.
1801. Rumsey, David, 1944- and Cary, John, ca. 1754-1835. This layer is a georeferenced image of a map of the East India Isles orignally created by J. Cary in 1801. The original map Appears in 'Cary's New ... Cartography Associates.
1842. Rumsey, David, 1944- and Arrowsmith, John, 1790-1873. This layer is a georeferenced image of a map of Australia created in 1842. Counties of Western Australia are numbered with a key included. Extensiv... Cartography Associates.
1809. Pinkerton, John, 1758-1826 and Stanford Geospatial Center. This layer is a georeferenced raster image of an historic regional map of Southern Africa originally created by John Pinkerton and illustrated by L... Stanford Digital Repository.