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> SF is sinking, and this has been known to everyone with 10 brain cells in the SF Bay Area, for as long as i’ve been alive. part of SF was built on “reclaimed” land, and that filled in land cannot support the weight of the buildings on it anymore, so it’s sinking.

Exactly so.

Random fact: There's an internet photo meme that claims that Plymouth Rock demonstrates that the Atlantic Ocean water level hasn't changed since 1620, showing that the Rock is essentially at the same position relative to the water as it likely was at the landing of the Pilgrims.

Only one problem with the meme -- it's not even close to true. The Rock has been moved and relocated multiple times, broken into multiple pieces, half of it carried around town, reassembled, chunks chipped off and taken or sold, etc. such that only about a third of the original Rock remains in its protective stone enclosure, and no one has the foggiest idea of whether it's at the same level relative to the water as it was originally.

But we're pretty sure about San Francisco sinking. Same true of Miama FL as well. It's built on a freakin sand dune over an aquifer (the Biscayne Aquifer). Whether or not the Atlantic level is rising, Miami is sinking as well.