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Major river basins of the world

Year: 2005
From collection: Vital Water Graphics
Author: Delphine Digout, UNEP/GRID-Arendal
Rivers form a hydrological mosaic, with an estimated 263 international river basins covering 45.3% of the land surface area of the earth, excluding Antarctica. This graphic shows the locations of 26 of the world's major river basins. A basin is defined as the land area (watershed) where all surface water drains to a certain river.
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