[cctop]

Regarding point #4, if you search for "San Joaquin valley sinking" there are a lot of interesting articles, and the first result is an article from the Stanford Report last year.

My understanding is that it's like we're living on a sponge that compresses as we remove water from it, and that some amount of the compression is permanent as the soil compacts.

In case you've never seen it, here's a famous photo that purports to show the amount of subsidence at the maximum spot in the valley.

[cctop]

Regarding point #4, if you search for "San Joaquin valley sinking" there are a lot of interesting articles, and the first result is an article from the Stanford Report last year.

My understanding is that it's like we're living on a sponge that compresses as we remove water from it, and that some amount of the compression is permanent as the soil compacts.

In case you've never seen it, here's a famous photo that purports to show the amount of subsidence at the maximum spot in the valley.