The high land marking the boundary between two drainage basins is called what?

The high land marking the boundary between two drainage basins is called what?

• A. Upper course
• B. Waterfalls
• C. Hydrological Cycle
• D. Watershed

Answer: (D)

A watershed is the high ground that marks the boundary between drainage basins. It acts as a natural divide, so rainfall on one side drains into one basin and on the other side into a different basin. This high ground can be a mountain ridge or a hill line, forming the separation between catchments. The other terms don’t describe a boundary: the upper course refers to the start of a river, waterfalls are features within a river, and the hydrological cycle describes the global movement of water, not a boundary between basins.

A watershed is the high ground that marks the boundary between drainage basins. It acts as a natural divide, so rainfall on one side drains into one basin and on the other side into a different basin. This high ground can be a mountain ridge or a hill line, forming the separation between catchments. The other terms don’t describe a boundary: the upper course refers to the start of a river, waterfalls are features within a river, and the hydrological cycle describes the global movement of water, not a boundary between basins.