Since golden mussels were recently identified in the Sacramento-San Joaquin Delta, waterways in parts of Northern California ...

The most recent risk assessment, outlined in maps published by the California Geological Survey, illustrate the devastation possible from extreme-but-realistic scenarios.

A map of California shows where drivers are advised ... The heaviest rainfall is expected along the coastal ranges of northern California and southern Oregon through Monday and early Tuesday ...

The most recent risk assessment, outlined in maps that were ... 5 off the Humboldt County coast—which prompted a tsunami warning affecting millions in Northern California—was a blaring ...