GENERAL GEOLOGY

Detailed explanation-1: -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.

Detailed explanation-2: -A drainage divide, water divide, ridgeline, watershed, water parting or height of land is elevated terrain that separates neighboring drainage basins. On rugged land, the divide lies along topographical ridges, and may be in the form of a single range of hills or mountains, known as a dividing range.

Detailed explanation-3: -A mountain or an upland separates two drainage basins in an elevated area. Such an upland is known as a water divide.

Detailed explanation-4: -A river drainage basin is an area drained by a river and all of its tributaries. A river basin is made up of many different watersheds. A watershed is a small version of a river basin. Every stream and tributary has its own watershed, which drains to a larger stream or wetland.

Detailed explanation-5: -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.