Need some H2O help!

Alright... This may sound really stupid.... but how do I create a shallow pool of water... or maybe a thin stream or creek? It has to be walkable. I know I can technically use the "Shallow Water" cliff option and then raise the terrain to make it walkable, but that just leaves all the sides as cliffs, and no matter how much you smooth 'em, there's still a smitch of cliff rock graphic around the edges of the pool or whatnot. Most of the dev maps have done what I want. How do they accomplish this? An example of the effect I am looking for would be the center of the "Twisted Meadows" Frozen Throne melee map. :\

1) Fill your whole map with deep/shallow water
2) Use the raise tool where you want land
You won't have any cliffs bothering you if you'll do it this way.

Edit: Typo

or u could save time by makeing a new map based of water......tho if u already did work on the map, do wut tylor said

Go to the advanced toolbar and uncheck "Enforce water height limits"

raise a single cliff block and put shallow water on it and drag it around

But it is better to start with shallow/deep water.

I got bored and made this