First Drilled Oil Wells in California!

First Drilled Oil Wells in California


What the Plaque/Guide Says:

California’s first drilled oil wells that produced crude to be refined and sold commercially were located on the North Fork of the Mattole River approximately three miles east of here. The old Union Mattole Oil Company made its first shipment of oil from here, to a San Francisco refinery, in June 1865. Many old well heads remain today.

More about California Historical Landmark #543:

That pretty well sums it up!

How Can I #HelpTheHelpers?

  • Become a member of the Humboldt County Historical Society!
  • Be a responsible visitor! Please respect the signs and pathways, and treat all structures and artifacts with respect. They’ve endured a lot to survive into the present. They’ll need our help to make it into the future!

How Do I Get There?

40 Sherman Ave
Petrolia, CA 95558
(Take Me There!)

When Should I Visit?

Whenever the mood strikes you!


Read all about my experience at this historical site!

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