So I have this (selected plane in edit mode below) plane and I want to cut into it with this mesh (the mesh on top):
The crucial bit is that I'm not looking to use the boolean mod to punch out a shape. I just want the curve of this long, thin piece to be part of the plane's geometry. That way, I can select those faces and adjust the Z location (riverbed).
I've tried using the boolean modifiers but have had no luck. Is there a way for me to project this other mesh onto the plane?
Thanks for your attention.