Clair is the one who gives you the TM waterfall. He is the gym leader of Blackthorn City.
Leader Wake will move after you switch the lever on the left side. To get to the lever you will battle a few Trainers.
In HeartGold, you can find the HM Waterfall in the Ice Cave.
Most water type Pokemon can learn the move Waterfall.
to get the HM waterfall defeat the 8th gym leader and talk to the ancient Greek looking lady(before going i would save) she gives you waterfall.
the waterfall entrance of mt mortor
which gym leader?
waterfall, surf
In Cerulean City
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The 14 gym leader in heart gold is in Saffron City.
you need to beat the 8th gym leader in blackthorn city. glad to be of service.
In Blackthorn City.