<P> The Humboldt meridian in California , longitude 124 ° 07 ' 10 '' west from Greenwich , intersects the base line on the summit of Mount Pierce at latitude 40 ° 25 ' 02 '' north ( co-ordinates in NAD27 datum ) , 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 was established in 1853 . </P>
<P> The Humboldt meridian in California , longitude 124 ° 07 ' 10 '' west from Greenwich , intersects the base line on the summit of Mount Pierce at latitude 40 ° 25 ' 02 '' north ( co-ordinates in NAD27 datum ) , 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 was established in 1853 . </P>
the intersection of the humboldt baseline and meridian is in
the intersection of the humboldt baseline and meridian is in
latitude 40 ° 25 ' 02 '' north
latitude 40 ° 25 ' 02 '' north