Ashenvale Rivers?

Hey, I've been studying ashenvale terrain style because I'm using it on my open rpg, but I can't figure out how blizzard made the land ramp off straight into the water without cliiffs, Its like theres no cliffs, but like a hill that just goes up and then straight into the water. Any help?

This is done by starting a new map and setting its initial terrain height to "shallow water". Then you just raise the land out of the water using the "raise" tool.

also starting on shallow allows u to make very good looking waterfalls without having any of those cliffs

click on my sig, and look in the screenshots, theres an example of the waterfalls u can make