A boundary of watershed is defined by watershed divide. This is the ridge of uppermost elevation surrounding a stream or network of stream. Rainwaters that will fall outside of the boundary will enter different watershed and will flow to different bodies of water.
The term applied to the outside boundaries of a watershed is "MEANDER."
Look on the map of drainage divides. USGS
Look on the map of drainage divides. USGS
elevation features like hills, mountains, and ridges
Divides are the boundaries that separate streams in adjacent drainage basin.
Watershed.
It is an area of land that is drained by a river. It is also a ridge or elevated area of land that divides two areas of land that are drained by two river systems.
Pierre Richard T. Gravelle has written: 'Automatic delineation of watershed boundaries using IDRISI'
A nested watershed is simply a watershed within a watershed. An example might be the Platte River watershed which is a nested watershed within the Missouri River watershed which in turn is nested within the Mississippi River watershed.
what watershed does everyone live on
The term "watershed" is sometimes used, though this is a little ambiguous, since some people use it in a way that's essentially synonymous with "drainage basin", and some people use it for the boundaries between drainage basins.
You can change a watershed by polluting it