EVERYDAY SCIENCE

Detailed explanation-1: -A watershed is an entire river system-an area drained by a river and its tributaries. It is sometimes called a drainage basin.

Detailed explanation-2: -The area drained by a single river system is called a drainage basin. An elevated land that separates two drainage basins is called a water divide. The main river along with its tributaries forms a river system.

Detailed explanation-3: -drainage basin, also called catchment area, or (in North America) watershed, area from which all precipitation flows to a single stream or set of streams.

Detailed explanation-4: -The area drained by a river and its tributaries is called a drainage basin.

Detailed explanation-5: -For example, the watershed of a lake would include not only the streams entering that lake but also the land area that drains into those streams and eventually the lake. Drainage basins generally refer to large watersheds that encompass the watersheds of many smaller rivers and streams.