Look on the map of drainage divides. USGS
There can be boundaries such as water. Fences, yards, sand, and other boundaries can also get in the way and cause a barrier.
A blind map is a map containing political boundaries and major geographical features, but no names.
A political map serves this purpose as opposed to a physical map which shows features of geography, such as mountains
On a map geographical features, such as oceans, lakes, cities, boundaries, mountains, etc. suggest relative locations.
Political maps indicate state and national boundaries and capital and major cities.
Look on the map of drainage divides. USGS
Watershed.
The term applied to the outside boundaries of a watershed is "MEANDER."
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.
elevation features like hills, mountains, and ridges
Geographical boundaries are natural or artificial lines that separate different areas or regions on the Earth's surface. They can be defined by physical features like mountains, rivers, or coastlines, as well as through legal agreements between countries. Geographical boundaries help to establish territories, jurisdictions, and limits for governance and resource management.
the geographical boundaries of Patagonia are Wyoming and Montana.
The Himalayas are one of them.
Divides are the boundaries that separate streams in adjacent drainage basin.
Are there any watershed enhancement programs in your section of the river? Tell us about one.
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.
convergent,divergent,and transform boundaries