The invasive two-inch wide golden mussel showed up near the Port of Stockton last fall. Since then, it’s spread south, extending to other waterways in the Delta and some in the San Joaquin Valley.
Now, eyes are looking north to Lake Oroville, where the mussels could pose a large threat if they’re introduced.
The reservoir is the second largest in California. It’s part of the state’s system that delivers water through a network of pipes and pumps to more than two-thirds of residents and hundreds of thousands of acres of farmland…