I think the water problem will hit so hard once the time has come. Right now almost nobody can imagine not having water.
I read studies about climate change and how it will affect the area I’m relocating to right now. We had a well drilled that provides water all year around but will also use rainwater collection to store more for the dry periods of the year.
I also look into getting a bug out location close to the homestead we are building now. We are already away from everything at our homestead but when times get really tough I want to have another fallback right next to some mountains nearby. I plan to build a pretty big underground water storage over there.
Alea iacta est ("The die has been cast")