Hello there!

I'm going to start building a new project, a big floating city! I found an epic picture that will be the main inspiration.

As you can see, there'll be small rivers in the floating city, that'll fall down in a giant sea. (Well not that giant.) So I picked this spot on the map: http://www.awesomedave.co.uk/#layerI...ldZ=594&zoom=5

What I need:
Some help Ofcourse!