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Drainage is the removal of water from the surface of the earth.Radial drainage are those found in pattern of streams radiating from a central point or area e.g. off a mountain.
If the surface can be imagined, then it can be represented. Therefore, the answer to the question is that there is no such surface.
narmada river
A crown.
surface drainage system
drainage basin
Surface drainage systems.
Surface drainage systems.
That can be referred to as drainage.
surface drainage system
surface drainage systems
There are many different kinds of drainage basin on the surface of the earth.