if I understand the spline tutorial correctly https://docs.unrealengine.com/latest/INT/Engine/Landscape/Editing/Splines/index.html I should be able to use it to do something like create a creek. I used the lake water material from the content, and turned that into a mesh, but the water doesn’t connect like the tutorial says it should. I control click from one spline to another as noted. But the water doesn’t fill, it just makes a box around the spine. Though i do see some green fill that occurs between the splines.