Question

what separates a watershed?

Explanation:

A watershed (drainage divide) is separated by a ridge, hill, or other elevated terrain. Water on one side flows to one body of water, and on the other side to a different body, due to the elevation change directing runoff.

Answer:

A watershed is separated by a drainage divide (such as a ridge, hill, mountain, or other elevated landform). This divide directs water flowing on one side to one river, lake, or ocean basin, and water on the opposite side to a different basin.