I'm sure my questions are all already answered in other threads, but I do have some specific questions regarding changes in the landscape before and after the Calamity.

For now, I'm looking to find out about the lore behind changes in Thanalan's geography in particular, though I will be asking about other regions later on. More specifically, I wanted to know about Nophica's Wells.

I can't remember much, except for what may have been an NPC saying that it used to be an oasis pre-Calamity, and then it got drained by the landscape changes? But then the lorebook comes in and says something about a cave-in of underground caverns, which may or may not have been caused by the Calamity.

Also, how did weather patterns in Thanalan change between 1.0 and 2.0? It rains quite a bit in-game now, but was it the same in 1.0? Why is Drybone still "dry" when I distinctly recall questing in the middle of a torrential downpour in-game?

How do dust storms affect Central Thanalan, but never affect Ul'dah when they're right next to each other?

Getting into theorycrafting here, but where does Ul'dah get its freshwater from? Do the Wells and rainfall supply everything? Why does the Goblet have a massive waterfall in it? I can't remember seeing anything like a water purification plant in-game, but is it possible for something like that to exist, given the presence of their alchemists?