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Some parts of the Ohio Lands (now Ohio) were laid out in survey townships, but based on other points not listed above: Base Line of the United States Military Survey (1797) [5] Great Miami River baseline (1798) [5] Ohio River (1785) [5] — also part of Indiana [5] Muskingum River baseline (1800) [5] Scioto River baseline (1799) [5]
U.S. Bureau of Land Management map showing the principal meridians of Ohio, Indiana, and Illinois. 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.
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.
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 baseline is specifically the principal east-west line (i.e., a parallel) upon which all rectangular surveys in a defined area are based. The baseline meets its corresponding principal meridian (north-south line) at the point of origin, or initial point , for the land survey.
The Beginning Point of the U.S. Public Land Survey is the point from which the United States in 1786 began the formal survey of the lands known then as the Northwest Territory, now making up all or part of Ohio, Indiana, Illinois, Michigan, Wisconsin, and Minnesota. The survey is claimed to be the first major cadastral survey undertaken by any ...
These survey lines govern all land surveys in four states and a large portion of the land surveys for two more. Monuments have been erected where the two lines meet at 34°38′44″N 91°3′42″W / 34.64556°N 91.06167°W / 34.64556; -91.06167 , and the surveyors' skill has been commemorated at the Louisiana Purchase State Park ...
It traces its history to the Survey of the Coast, which was formed in 1807 as the first scientific agency of the U.S. federal government. It became the United States Coast Survey in 1836 and the United States Coast and Geodetic Survey in 1878, the latter name change reflecting the increasing role of geodesy in its work. Upon the creation of ...