Mount Diablo meridian

Summit beacon tower atop Mt. Diablo. The initial point marker lies within this tower.

The Mount Diablo meridian, established in 1851, is a principal meridian extending north and south from its initial point atop Mount Diablo in California at W 121° 54.845. Established under the U.S. Public Land Survey System, it is used to describe lands in most of northern California and all of Nevada.^[1] Mount Diablo also marks the baseline at latitude 37°52′54″N.^[2]

Mount Diablo Memorial Marker

References[]

^ *John W. Pettley, PLS. "Mount Diablo Survey Point Establishes Property Boundaries in California and Nevada". Mount Diablo Surveyors Historical Society. Retrieved 2012-09-27.
^ *"Mount Diablo Meridian". U.S. Bureau of Land Management. Archived from the original on 2017-01-06. Retrieved 2012-09-27.

"Mount Diablo Meridian, San Francisco, CA". Principal Meridian Project. Retrieved 2012-09-27.
"Cadastral Survey: Principal Meridians and Base Lines". U.S. Bureau of Land Management. Archived from the original on 2012-10-18. Retrieved 2012-09-27.

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v Principal meridians of the United States
Numbered meridians	First Second Third Fourth Fourth (extended) Fifth Sixth
Named meridians	Black Hills Boise Chickasaw Choctaw Cimarron Copper River Gila and Salt River Humboldt Huntsville Indian Louisiana Michigan Mount Diablo Navajo New Mexico Montana St. Helena meridian St. Stephens Salt Lake San Bernardino Tallahassee Uintah Umiat Ute Washington Willamette Wind River
List of principal and guide meridians and base lines of the United States