Need help figuring out why rivers aren't working for me


22

For starters, I’ve never used ue5 before, so sorry for my cluelessness. I’m trying to add a river to my landscape but I can’t figure out how to make it smaller. In the tutorial I’m watching the guy has a section under his water controls for width, depth, etc, but as seen in the 2nd photo I don’t have that. The water also keeps clipping off the edge outside of the bounds of the river. Please help if you know how to fix this!