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GRDC Major River Basins of the World, 2nd, rev. ext. ed. 2020

GRDC Major River Basins of the World (MRB) is an ongoing GIS project of the Global Runoff Data Centre (GRDC). It is provided for public use under the condition of full citation and reference to incorporated data from the HydroSHEDS database.

This is the 2nd, revised and extended edition 2020 and replaces edition 2007. Edition 2020 provides basin polygons and river networks representing 520 river basin considered “major” in basin size, or in their hydro-political importance or interest.

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