Example?
You already have a bunch of them. Drakir’s map Fligerhorst suggested by Loffy has a waterfall in it and the .map is also available at drakir’s site in the archive section. Saberpeak also has the .map available as suggested by blushing_bride. Did you look at them carefully and tried to understand what’s going on or did you just open them, flew around for a couple of minutes and then gave up.
Mapping is not easy, but this is some pretty basic stuff, and it seems to me like you’re not even bothering to understand what’s going on…you just want some prefabs to plug into your map and don’t really care about learning how stuff works. Both maps previously mentioned have examples of what you’re trying to do and luckily for you they come with the source files. I really don’t know what more you could ask for.
If you’re not able to understand how to do something as simple as a waterfall when you have a sample map right there to look at, then perhaps it’s best you give up mapping for awhile because there’s a lot of tougher stuff you’re going to have to do to make a complete map, and it seems to me you’re really not up to it.
I don’t know how old you are, but if you’re not in your teens yet then I strongly recommend you give up mapping till you’re a little older as it will probably be extremely hard for you at this stage.
P.S. Congrats on the quadruple post