Q. Consider the following :

1. The boundary line separating one drainage basin from the other is known as the ‘catchment area’.
2. The catchments of large rivers are called river watersheds.

Which of the above is / are correct?
Answer: None of the above
Notes: A river drains the water collected from a specific area, which is called its 'catchment area'. An area drained by a river and its tributaries is called a drainage basin. The boundary line separating one drainage basin from the other is known as the watershed. The catchments of large rivers are called river basins while those of small rivulets and rills are often referred to as watersheds.