Watershed 101

A Watershed is the area of land that drains to a common point, such as a stream, lake, estuary, wetland, aquifer, or even the ocean. The boundary of a watershed is formed by the topography of an area, and they’re usually divided by hills and ridges. Watersheds can be as small as a footprint or large enough to encompass all the land that drains the Atlantic Ocean. Small watersheds are part of larger watersheds, which in turn are part of even larger watersheds.


There is the same amount of water on Earth as there was when the Earth was formed.