Principal meridian
A principal meridian is a meridian used for survey control in a large region.
Canada
The
Winnipeg, Manitoba
. This line is exactly ten miles west of the Red River at the Canada–United States border.
Six other meridians were designated at four-degree intervals westward, with the seventh located in British Columbia; the second and fourth meridians form the general eastern border and the western border of Saskatchewan.
United States
In the
Mount Diablo
.
Often, meridians are marked with roads, such as the Meridian Avenue in
Mount Diablo Meridian, Meridian Road in Wichita, Kansas on the Sixth Principal Meridian, and Meridian Avenue in several western Washington counties generally following the Willamette Meridian. Baseline Road or Base Line Street extends for about 40 miles (64 km) from Highland, California east of San Bernardino to La Verne, California
where it meets Foothill Boulevard.
See also
- Cardo
- Baseline (surveying)
- List of principal and guide meridians and base lines of the United States
External links
- The Principal Meridian Project (US)
- History of the Rectangular Survey System Note: this is a large file, approximately 46MB. Searchable PDF prepared by the author, C. A. White.
- Resources page of the U.S. Department of the Interior, Bureau of Land Management
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