Check out new nodes added in the newest version.
The latest version introduced two new nodes: Water level and Advanced water level. The team noted that both nodes can be used with the Colorize or Advanced Colorize nodes or by themselves.
The Water level node: you can add a water level in 2 clicks, adjust the elevation, and pick one of the 10 color themes.
There's also the Advanced Water level node with the same behavior allowing users to set the exact colors for the deep ocean water color and the inland coastal water color.
The team has also added a new project to show how to use the Advanced Water level node and get three different levels of water on a terrain.
You can learn more here.