Water from waterfalls drops into pool of water which then flows as a river continuing downhill to the sea.
Then it evaporates into clouds, falls as rain onto high ground, and flows down from the high ground into rivers which could possibly fall from that same waterfalls again.
If you're asking, "what's in the waterfall?" the answer is nothing. You go up them when you get waterfall to get to new areas.
the water doesn't go up
You go to where the girl (Jasmine) is under the Gym on the beach and she will give you Waterfall (the HM obviously. You surf on the water behind her and when you get to the waterfall use waterfall, then go through Victory Road, and Then face the Pokemon League.
A waterfall is not considered to be a body of water. The river and often the pond that is at the bottom are considered to be bodies of water though.
Khone
Brick wall water fall
it depends on which waterfall :-/
Because the water in a waterfall is higher than water on the ground
The sage is located in Undella Town. To get to it, you need to go to the water and go up the waterfall.
Get the HM Waterfall in the ice path then go to victory road click A on the waterfall and your pokemon will go up the waterfall.
you have to get the HM waterfall to go over the waterfall
Waterfall