The concrete on which the tower stands can't be seen. I deinstalled the texture packs but that didn't change a thing.
Then I tried my luck with FNVLODGen (running with the additions) but that watertower at the Goodsprings cemetery keeps floating when seen from a distance.

Try to turn on and off the arch validation or delete system32 no just kidding (i'am not responsible for any harm that may come to your pc if you dident understand the joke of deleting system32 just dont do it dont delete system 32)
So delete the fallout.ini and falloutprefs.ini in the document folder not in the game file but in the document file
And then re-lunch fnv launcher so it can create the new .ini files

Thanks for trying to help but that didn't solve the problem.

I know this isue when you mod your game there is a chance that your graphical settings will all turn to zero or one of them even if you put it to default it want fix you have to tweak it manualy

I know this isue when you mod your game there is a chance that your graphical settings will all turn to zero or one of them even if you put it to default it want fix you have to tweak it manualy

Probably because the LOD isn't as tall as the model, missing the concrete foundation.

Spoiler:

So do I have a broken LOD mesh? When I open the cell in the GECK the watertower is just one model and the "visible when distant"-option is checked. Should I also check "High Priority LOD"? Or is there only the purge-option left?

Nothing's broken, it's just how the mesh is. LODs are separate models, you can find them in the meshes archive, named the same as the model they go with, with "_lod" prefix. "Visible when distant" is checked because the model has a corresponding LOD.

tl;dr - your game's fine, the mesh's been this way ever since 2008

superpele wrote:

the mesh's been this way ever since 2008

You mean the watertower is floating at your end too and this isn't so much a bug as it is an inconvenience?!

Oh god, I never noticed this in all my years playing. Never forgety

Thanks @"superpele" for clearing this up.