It is a mix of public and private lands overseen by the Blue Ridge Berryessa Natural Area Conservation Partnership.

The Partnership has more than 100 participants, among them are: Yolo Land & Cattle Co., Homestake Mining Company, Guenoc Ranch and Winery, Bureau of Land Management, Gamble Ranch, and the University of California Natural Reserve System.

Also, protection against urban sprawl through conservation easements, public ownership and voluntary participation by private landowners and businesses.

[1] The natural area is named for two prominent geographic features it encompasses: the Blue Ridge Mountains and Lake Berryessa.

Within the boundaries are: Lake Berryessa and the adjacent wildlife area, Knoxville Wildlife Area and the Knoxville off road recreation area, McLaughlin Natural Reserve, Stebbins Cold Canyon Reserve, Cache Creek Wilderness, the new Berryessa Snow Mountain National Monument, Yolo County regional parks, Indian Valley Reservoir and the southern section of Mendocino National Forest.