Go to sunyshore city walk north as far as you can go when you reach the sea there will be a girl there she will talk to you and give you the HM08 waterfall.
You have to first get waterfall from the girl on the beach and then use surf until you find a waterfall
You beat Sunnyshore gym and get waterfall, then go to Mt. Corronet and use waterfall to climb the waterfall. There is a cave enterance at the top of that, and the Orbs are contained inside.
Go to the beach, under the gym, where you'll find a little girl who gives you waterfall after you cleared the gym.
you automatically get it if you walk north in sunyshore city. However, you must beat Volkner first.
After you beat the gym leader in sunyshore city,go to the top of the beach near the cave. Jasmine. She will give you HM 07 WATERFALL! :D
HMO8 Waterfall can be found in the Cave of Origin on your way down to face Groudon. You might need HMO5 Flash to see.
In Shunishoart City.
behind the waterfall in Mt.Coronet
its in the icefall cave in island4
Jasmine will give HM Waterfall to you at the beach after defeating Volkner.
one of your party Pokemon has to know waterfall press A on the waterfall it will say it's a waterfall do you want to use waterfall say yes and you will go up the waterfall
u have to get waterfall from a girl on sunnyshore beach.
You have to first get waterfall from the girl on the beach and then use surf until you find a waterfall
find the waterfall and surf into it ( you dont need HM Waterfall)
in sunyshore city the girl on the beach gives it to you
To get HM7 (Waterfall) in Platinum you can get it at Sunyshore City talking to Jasmine at the north of the city.
after beating the 8th gym leader go to the beach and the lady will give you the HM 7 waterfall