There are 4 of me. I'm the biggest source of water and I'm in the whole world. The biggest of the 4 of us is the Pacific.
I have a mouth, I can be very long and the longest of me is The Nile.
You can drink me. There are orange, strawberry, lemon, and other fruits flavors...
I fall from the sky when the clouds are heavy. I can be stormy.
I'm solid water and I just appear in winter in cold countries.