Sculpting the waterbody

Now that your area is well defined, you can adjust the sculpting of your waterbody.

First of all, you can move the water surface using the gizmos. To do this, change the selection mode to "Water surfaces", choose the translation gizmo, and pick a point on your water surface. You can then translate or rotate the water surface, and the terrain sculpting will adapt automatically.

To reset the water surface to its original position, you can use the reset button.