GEOLOGY

Detailed explanation-1: -A water divide is an elevated area, such as a mountain or an upland that separates two drainage basins.

Detailed explanation-2: -Ridges and hills that separate two watersheds are called the drainage divide. The watershed consists of surface water–lakes, streams, reservoirs, and wetlands–and all the underlying groundwater. Larger watersheds contain many smaller watersheds.

Detailed explanation-3: -A ridge line is also a line connecting the points of highest elevation in a terrain. Therefore, ridge line is also known as ‘watershed line’ or a ‘surface water divide’.

Detailed explanation-4: -The boundary between drainage basins is a drainage divide: all the precipitation on opposite sides of a drainage divide will flow into different drainage basins. A drainage basin provides a limited surface area within which physical processes pertinent to the general hydrology may be considered.

Detailed explanation-5: -The boundary of a watershed is defined by the highest elevations surrounding a lake or river segment. A drop of water falling outside of the boundary will drain to another watershed.