California Gold Rush Overmining (1848-1855)
High-pressure water cannons blasted away entire hillsides as prospectors sought golden riches. Rivers ran brown with sediment. Mercury has been used in processing poisoned watersheds for generations. Native vegetation disappeared under mining waste. Indigenous communities found their lands suddenly invaded by fortune-seekers. The environmental effects remain visible today in altered river channels and persistent mercury contamination. Just a few years of frenzied resource extraction permanently transformed California’s landscape.
