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How to find the move waterfall in pokemon black
Get the hm surf.
You need to be able to use surf in order to find waterfall. Surf is a move that allows you to ride the back of a pokemon over water tiles in the game, letting your explore the oceans.
To get surf in pokemon black by : Getting your jet badge, won by defeating the gym leader in mistralton city. Defeating your rival, cheren, at the entrance to twist mountain.