Delta
A river system that operates inside a drainage basin. A drainage basin is the area of land drained by a river and its tributaries.
I think it MIGHT be a basin.... I could be wrong.
river basin
The area of land drained by a river is called a "catchment area". It is so-called because is the the area that catches the precipitation (rainfall).Another term is "river basin", but this is less specific.(The geographical term, "catchment area", is often used to describe the area served by, say, a school or hospital).
lake
An area drained by a river or river system is called a drainage basin.
Basin
Delta
Delta
an area drained by a river is called pooo lol
a watershed, also called a drainage basin, is an area drained by a river.
River Basin
Basin
No, it's a watershed.
This is its catchment - surrounded by its watersheds.
Drainage basin.