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Base Hydrology in Bhuvan 2D

Posted: Wed Dec 04, 2019 5:30 pm
by ug201213008
Hey All,
I was exploring Bhuvan maps, it leads me to Bhuvan 2D's Base Hydrology Feature, When I click over it, it start showing some Blue/Pink/Voilet lines. Can someone please explain to me, what these lines exactly mean?
Please note:-
1. These lines are in the river {which is not flowing now}, under mountains and even in the farms... Which are far from river or lakes.
2. In this area there is no natural water flowing bodies.

Is there any detailed brochure available for this type of features of bhuvan?