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A plateau (flat area of ground) will separate drainage basins, but more usually each drainage basin is separated topographically from adjacent basins by a ridge, hill or mountain, which is known as a water divide or a watershed.

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16y ago
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14y ago

drainage basins are separated by geomorphology. Do you know what a topographical map is? Well, if you do, look for the spots where the lines are close together... then look for all the spots where the lines go from being close together to being farther apart. In general this will indicate drainage patterns... again, IN GENERAL for those pretentious surveyors who will undoubtedly try to convey complete accuracy in their answer. This is an extremely general response to a generally self-explanatory question. Water flows from up to down (ie. from mountaintop to ocean). When it gets down (ie. ocean), it goes back up (ie. evaporation and cloud formation), then the cycle repeats. On its way down, water follows the path of least resistance, which means that (quite obviously) it will never flow downhill. So: In your search for drainage basin separation, look for mountainous regions, and check out the general regional topography. Look for where glaciers exist then follow the path of their meltwater. When following one meltwater flowpath, you'll eventually see other water sources connecting to your chosen flow; as you follow further and further downhill, many more of these connections will be found. That's because the sources of these connecting flows all lie within a topography that provides the melt/rainwater with a gravity-propelled path of least resistance that is similar to other flow systems. Big rivers like the Fraser in the Canadian western lower mainland, the Mississippi, the Nile... great examples of the Grand Connection - where many sources of fresh water end up meeting and getting together and partying all the way down to the ocean.
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10y ago

Areas of uplifted terrain.
a drainage basin is divided by an imaginary line called a divide.

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14y ago

A divide.

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Q: What are drainage basins separated by?
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