Humboldt Meridian
Encyclopedia
The Humboldt Meridian in California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, longitude 124° 08' west from Greenwich, intersects the base line on the summit of Mount Pierce, in latitude 40° 25' 12" north, and governs the surveys in the northwestern corner of California, lying west of the Coast Range of mountains, and north of township 5 south, of the Humboldt meridian system. This principal meridian
Principal meridian
A meridian is an imaginary line on the Earth's surface from the North Pole to the South Pole that connects all locations with a given longitude. Each is half of a great circle on the Earth's surface...

was established in 1853.
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