The map above is Napa County’s evacuation map for the Glass Fire, burning from Calistoga to St. Helena. Click “OK” to see the map after the disclaimer screen. It has been experiencing delays ...

Napa County has a lot more red on the proposed update of Cal Fire’s statewide fire hazard severity zone map, and some rural residents fear that could unfairly affect already skyrocketing ...

Reality check: Maps of Napa County’s existing bike and pedestrian networks let residents pinpoint trouble spots — places where walking or biking just doesn’t feel safe. The future vision ...

New state maps show the locations of the West Napa Fault and associated faults in greater detail than ever before in such places as western city of Napa neighborhoods. The two maps released by the ...

Five bridges in Napa and 23 in Sonoma County are operated by their respective counties, the rest are under either state or federal auspices. Caltrans inspects all bridges in Sonoma County annually ...