The center of the box should be where the gizmo is, so I don’t think that’s it. Try to find the edges to the water zone’s cube and make sure it surrounds the entirety of your level from the highest high to the lowest low, world partion + water has it’s quirks a bit, but it should still handle it regardless of height as long as the lake itself is inside the water zone. After that we can move onto fixing the water zone tile sizing so you don’t get the mesh water in your land. (You can see I have adjusted mine to be smaller so it showed a bit of a better indicator).