I'm sorry, I thought I was making things easier by not cluttering the main forum. Maybe a separate bug forum for the MiG-21 would be helpful?
That was my first thought too, but this is the only module that does it. It's not a texture issue, rather the water clips through the ground.
Good for you, but I still don't see them :P
Anyways, I'm doing a full reinstall of DCS world to see if that helps. Maybe some files got corrupted along the way...