Here's why:

* Watershed: A watershed is an area of land where all of the water that falls on it drains to a common point, such as a river, lake, or ocean.

* Divide: The high ground that separates these areas of drainage is the divide. It acts like a barrier, directing water flowing on one side to a different outlet than water on the other side.

Examples of watershed divides:

* Continental Divide: This is a major divide that separates water flowing to the Atlantic Ocean from water flowing to the Pacific Ocean.

* Mountain Ridges: Often, mountain ridges form natural watershed divides.

* Hills and Plateaus: Even smaller hills and plateaus can create divides between watersheds.

Let me know if you have more questions about watersheds!