HydroSHEDS level 2
mapHydroShed2
A SpatialPolygonsDataFrame
Lehner, B., Grill G. (2013): Global river hydrography and network routing: baseline data and new approaches to study the world’s large river systems. Hydrological Processes, 27(15): 2171–2186. https://www.hydrosheds.org/page/hydrobasins