[header] How to find the move waterfall in pokémon black [title] Get the hm surf. [step] 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 pokémon over water tiles in the game, letting your explore the oceans. 
To get surf in pokémon black by : [substeps] Getting your jet badge, won by defeating the gym leader in mistralton city. Defeating your rival, cheren, at the entrance to twist mountain.