Every earthquake makes the Northern California coast rise. In 1989 it rose a few inches after the Loma Prieta quake. Edit/Addendum Erosion is constant and makes it risky to be too close to the ocean. I have seen it in several places. 1. In Santa Cruz there was a storm in the winter of 1982 which coincided with an extreme high tide (“king tide”) So, the swell and the tide combined were maybe 30 feet above the usual. Highway 1 was washing away at Waddell Creek, West Cliff Drive too.They dumped giant rocks to save them. Houses were not so lucky, one washed away at 26th ave. 2. A recent hurricane removed most of Juno Beach and Jupiter Beach in Florida. They recently rebuilt 2.4 miles of beach buy dredging offshore and pumping sand in steel pipes, it was amazing to see. 3. Every summer I spent in Martha’s Vineyard we would see the erosion caused by winter storms. They moved lighthouses from time to time to save them.
The Biblical Flood that every culture around the world documented, was an inland occurrence. They were swamped from inland, not from the rising seas. If the sea level rose, people would have simply went to higher ground, and it would have been a non-event, and never mentioned. Save for places like Doggerland that disappeared under the sea, after the great thaw event was over.
As more water than the Ocean can hold about 30,000 feet max, the excess water is pushed into the earths crust at the ocean floor. That water makes it's way throughout the worlds aquifer systems, mountain streams become gushing torrents, springs become massive lakes, flash floods are quick and violent, rising water is slow and anticlimactic. Inland floods washing everything away, where as a shoreline moving due to rising waters, would not have destroyed settlements and villages. They simply would have returned when the water subsided. Flooding that came from inland leaves nothing behind as it washes everything out to sea.
MAY impact property values in the future.
Not wanting to wait that long California responds by destroying values now.
https://www.sfgate.com/local/article/2020-04-bay-area-sea-rise-stinson-beach-climate-16133384.php