Guaycuru
La Plata River.
Catchment/drainage basin.
it is called the basin or the"Mouth" of the river
I'm pretty sure it is the Congo River Basin
I'm pretty sure it is the Congo River Basin
Despite its name it's an estuary, it's named "Río de la Plata" (River Plate).
Drainage basin is also called catchment, catchment area, catchment basin, drainage area, river basin, and water basin. It is an area of land. All water that falls on that land flows into one river.
Watershed
The Amazon
Is called Río de la Plata (River of Silver)
Río de la Plata (River of Silver)
Amazon basin