I had every settlement on my first game, huge farms. Remember Tato + Corn + Mutfruit + Purified Water = Adhesive.
And to mod all my Power Armor in that game, I needed large amount of adhesive.
Many settlements on the water like Nordhagen Beach, Santcuary, and Spectacle Island had two giant water procs.
But all were linked with supply lines, (Map looked like a spider web) so while Croup Manor had nothing really in storage,
the main stash of everything was at Sanctuary. That way being linked, all items were available to smaller settlements.
(Not linked to Minute Men, I left Preston at the Castle and you can ignore him and turn the radio off)
So if I wanted to build a restaurant ( =happiness level) on a deck with lights and music, I had all the stuff linked together.
Also, you end up totally rich from those restaurants at every settlement, in case you love buying the mini-nukes, etc.
I never knew what I was doing was considered a glitch, but I broke everything down and the settlements had parties at night.
Stashing the weapons I thought everyone did, just like breaking down crap to raw form. Never had a ceiling on storage.
Console dude! My settlements were huge but not Gaztastic, or Gaztacular ....that guy is an artist.