Where do you get a water stone in Pokemon shiny-gold?

Answer 1

If you beat the 3 dragon tamers In the dragon's den they will reward you with a water stone as a prize

note that you have to beat them in a certain order. if you beat them one way you get a fire stone, beat them another you get a thunder stone, beat them another you get a water stone.

Answer 2

Water Stones can be found in Castelia City, Driftveil City and dust clouds in Pokemon White.

Answer 3

On the farthest to the right pier in castellia city answer panpour to the person.

Answer 4

go under ground