Foreign coins, possible China.
Before the levies were build, before important dams, floods happened.
It's apart of living there.
"If that sounds far-fetched, there's historic precedent: Geological evidence indicates that California endures massive flooding caused by atmospheric rivers every 100-200 years. And settlers who moved to California after the Gold Rush soon found what the native population had known for centuries: Northern California is prime flooding territory.
The most prominent example is the Great Flood of 1862, a natural disaster that still ranks as the largest flood in the history of the American West. Between Dec. 1861 and Jan. 1862, the West Coast received a near-constant deluge of rain. Sacramento received a stunning 23 inches in that period, turning the city into a watery ghost town."
Old news…
https:
//www.google.com/amp/s/www.sfgate.com/bayarea/amp/California-due-for-biblical-flooding-arkstorm-10921370.php
I lived there for 40 years,( Yes, I am old) seen local floods, (((They))) have known for 20 years that the Levees and older dams like Orville needs work. California has more Patriots then you can guess, thier waiting and watching. Stop voter fraud, stop illegal votes.
I don't want to "rain" on your parade, floods in parts of this country happen, earthquakes happen, it's all part of living on an ever changing planet. If you live in areas like CA you prepare for it, but pushing doom day shit is a Cabal tactic.