The two maps released by the California Geological Survey include the city of Napa, the Carneros region and American Canyon. A major feature is the West Napa Fault responsible for the Aug. 24 ...

Pickett Fire, which began on Aug. 21, has spread to more than 6,800 acres through Napa County, just east of Santa Rosa, as of Aug. 25. The fire is 13% contained, and its cause remains under ...

In 1995, the Manual of California Vegetation introduced a quantitatively based method for classifying and mapping vegetation in California. We used this method to develop a classification of ...

California’s Napa County saw sudden and intense wildfires develop last night, with one fire, the Tubbs fire, burning 20,000 acres within hours. It’s not clear, yet, just how extensive the ...