Question

What is drainage? What is drainage basin ?

Answer 1

Drainage is the natural or artificial removal of a surface's water and sub-surface water from an area with excess of water. The internal drainage of most agricultural soils is good enough to prevent severe waterlogging, but many soils need artificial drainage to improve production or to manage water supplies

An area drained by a river system. A drainage basin includes all areas that gather precipitation water and direct it to a particular stream, stream system, lake, or other body of standing water.

Answer 2

Drainage is the natural or artificial removal of a surface's water and sub surface water from an area with excess if water.

Drainage basin is any area of land where precipitation collects and drains off into a common outlets.