The range, which is 200 miles long and 3.5 million acres in size, runs through 12 counties, marked notably by Mount Diablo on the northern edge, in Contra Costa County. About 25% of the land in ...

Contra Costa County residents with views of Mount Diablo woke up to a beautiful, snowy sight Friday morning. A chilly and wet March storm dusted mountain peaks around ...

Save Mount Diablo said the group closed escrow on this “landmark conservation victory” a week after securing a $728,000 grant from the California Wildlife Conservation Board, which divvies up ...

These winds got their name from Mount Diablo, a prominent peak in ... Similar to the Santa Ana winds in Southern California, Diablo winds can reach speeds of over 70 mph. Combined with dangerously ...