Really? I've lived in Cali over 40 years and never heard or read about an earthquake caused by draining the aquifer. Yes the ground dropped in certain areas of the Central Valley, but no confirmed earthquakes.
Saltwater intrusion would be a bigger concern if near the coast. Here Comes the Sea: The Struggle to Keep the Ocean out of California’s Coastal Aquifers Over pumping can also screw things up. The central Valley has sunk over time.... https://www.sfgate.com/bayarea/article/Sinking-Central-Valley-floor-is-wrecking-a-key-13080026.php
Central Valley used to be under water. There are pictures of Mississippi River boats in Bakersfield. Back and forth to San Francisco.
Not entirely under water, but there were a number of navigable waterways all the way from Sacramento down to the southern ends of the valley. The largest fresh water lake west of the Mississippi once existed down there and it was called Tulare Lake. The rivers feeding it were dammed and diverted for agriculture, and now it's all gone and was turned into farm land. Ironic that California spent decades destroying all of its natural water storage, and now we live in perpetual drought. Humans are stupid.
In Phoenix? Speaking of Phoenix, I have a delivery in Tolleson next Thursday. Does it still suck finding loads out of there to California? Still too early for anything good on the load boards.
Oh, YEAH! I lived in Washington most of my life. It has the world's record for snowfall. No joke. Either Mt Rainier or Mt Baker would get it. I think it's currently held by Mt Baker, but I could be wrong. It's well over 100' of snow in a winter. I spent many years backcountry skiing and snow shoeing in the Cascades. You want to drive in the PNW? Get really good at putting on your chains.