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This is a list of principal and guide meridians and base lines of the
This is a list of principal and guide meridians and base lines of the United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
, with the year established and a brief summary of what areas' land surveys are based on each.
List of meridians
Primarily from theUnited States Government Printing Office
The United States Government Publishing Office (USGPO or GPO; formerly the United States Government Printing Office) is an agency of the legislative branch of the United States Federal government. The office produces and distributes information ...
''Style Manual''. GPO stock number 021-000-00178-3 (paper). State names usually signify only parts of each listed state, unless otherwise indicated.
Based on the BLM manual's 1973 publication date, and the reference to Clarke's Spheroid of 1866 in section 2-82, coordinates appear to be in the NAD27 datum.
Principal Meridians
Guide Meridians
Ohio Lands
Some parts of the Ohio Lands (nowOhio
Ohio () is a state in the Midwestern region of the United States. Of the fifty U.S. states, it is the 34th-largest by area, and with a population of nearly 11.8 million, is the seventh-most populous and tenth-most densely populated. The sta ...
) were laid out in survey townships, but based on other points not listed above:
* Base Line of the United States Military Survey (1797)
* Great Miami River baseline (1798)
* Ohio River
The Ohio River is a long river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing southwesterly from western Pennsylvania to its mouth on the Mississippi River at the southern tip of Illino ...
(1785) — also part of Indiana
Indiana () is a U.S. state in the Midwestern United States. It is the 38th-largest by area and the 17th-most populous of the 50 States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th s ...
* Muskingum River baseline (1800)
* Scioto River baseline (1799)
* Twelve Mile Square Reserve (1805)
See also
* Public Land Survey System — the basis of most meridians in the United StatesReferences
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