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Figure 1. This BLM map depicts the principal meridians and baselines used for surveying states (colored) in the PLSS.. The following are the principal and guide meridians and base lines of the United States, with the year established and a brief summary of what areas' land surveys are based on each.
The Public Land Survey System (PLSS) is the surveying method developed and used in the United States to plat, or divide, real property for sale and settling. Also known as the Rectangular Survey System, it was created by the Land Ordinance of 1785 to survey land ceded to the United States by the Treaty of Paris in 1783, following the end of the ...
In the United States Public Land Survey System, a principal meridian is the principal north–south line used for survey control in a large region, and which divides townships between east and west. The meridian meets its corresponding baseline at the point of origin, or initial point, for the land survey. For example, the Mount Diablo Meridian ...
The primary grid pattern is of quarter sections (1⁄2 mi × 1⁄2 mi (800 m × 800 m)). In U.S. land surveying under the Public Land Survey System (PLSS), a section is an area nominally one square mile (2.6 square kilometers), containing 640 acres (260 hectares), with 36 sections making up one survey township on a rectangular grid. [1]
The Fifth Principal Meridian, also known as the "5th Principal Meridian" and "PM 05", is a principal meridian survey line used in the United States for land claims in the Public Land Survey System (PLSS). It was first surveyed in 1815. The meridian, a north-south line, starts from the old mouth of the Arkansas River and runs north.
The five principal meridians of Alaska are the Copper River meridian (established 1905), Fairbanks meridian (adopted 1910), Kateel River meridian (adopted 1956), Seward meridian (adopted 1911) and Umiat meridian (adopted 1956). [1][citation needed]
The fourth principal meridian, set in 1815, [1] is the principal meridian for land surveys in northwestern Illinois and west-central Illinois, [2] and its 1831 [3] extension is the principal meridian for land surveys in Wisconsin and northeastern Minnesota. [1][2] It is part of the Public Land Survey System that covers most of the United States.
Boise meridian. The Boise meridian is one of the 35 principal meridians of the Public Land Survey System of the United States. Adopted in 1867, its longitude is 116° 23′ 35″ (or 116° 24′ 15″ [ 1]) west from Greenwich and its principal baseline is latitude 43° 22′ 21″ north. [ 2] The meridian and baseline intersect approximately ...