an area drained by a river is called pooo lol
stream
tu madre.
The catchment is the correct answer. Commonly folk say 'watershed' but the watershed is the boundary (ridges etc) of the catchment.
The floodplain is an area of flat land found on either side of a river that usually becomes wider as the river nears its mouth. A low watery formation of land at the mouth of a river is called a delta.
Watershed
The deep tree roots help prevent the soil from eroding.
a watershed, also called a drainage basin, is an area drained by a river.
An area drained by a river or river system is called a drainage basin.
River Basin
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).
river basin
This is its catchment - surrounded by its watersheds.
A river basin is an area of land drained by a river and its tributaries.
An area of land that drains to one river (or a river and its tributaries) is a drainage basin or watershed.
Land drained by a river is a watershed. This is an area of land that feeds all the water running under it and draining off of it into a body of water.
A catchment.
A Basin