Final answer:
Ridges, basins, and rivers are features that separate watersheds.
Step-by-step explanation:
One feature that separates watersheds are ridges. Ridges are elevated areas of land that divide two adjacent watersheds and direct the flow of water. Another feature that separates watersheds are basins. Basins are natural depressions in the earth's surface that collect and retain water, forming a distinct watershed. Lastly, rivers can also separate watersheds. When a river flows through a watershed, it establishes a boundary between two different watersheds.
Learn more about Separation of watersheds