What is a drainage basin

A drainage basin is any area of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water.

A drainage basin is a very important concept to understand in geography. Drainage basins can be huge or even small depending on the location of it. A drainage basin is an area of land where precipitation which is any kind of water that falls from the clouds gathers and drains into a body of water.