you go on route seventeen then go to route 18 when you get to a house, go down the stairs and you'll see a spot with grass if you go on it, the pokeball is waterfall
hope I helped :)
HM Waterfall can be found on Route 18 in Pokemon Black and White.
get it from the champion
to bad
Route 18.
At the western edge of Route 18.
yes
It's on route 18
On route 18
on route 18
route 18
the very end of rout 18
you get it in route 18