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 American Revolution. Beginning with the Seven Ranges, in present-day Ohio, the PLSS has been used as the primary survey method in the United States. Following the passage of the Northwest Ordinance, in 1787, the Surveyor General of the Northwest Territory platted lands in the Northwest Territory. The Surveyor General was later merged with the General Land Office, which later became a part of the U.S. Bureau of Land Management (BLM). Today, the BLM controls the survey, sale, and settling of the new lands. Contrary to what some believe, the BLM does not manage the State Plane Coordinate System (SPCS). The SPCS is managed by the National Geodetic Survey (NGS), known as the U.S. Coast and Geodetic Survey (USC&GS) when the system was created.
The Land Ordinance of 1785 was adopted by the United States Congress of the Confederation on May 20, 1785. It set up a standardized system whereby settlers could purchase title to farmland in the undeveloped west. Congress at the time did not have the power to raise revenue by direct taxation, so land sales provided an important revenue stream. The Ordinance set up a survey system that eventually covered over 3/4 of the area of the continental United States.
The Ohio Company of Associates, also known as the Ohio Company, was a land company whose members are today credited with becoming the first non-Native American group to settle in the present-day state of Ohio. In 1788 they established Marietta, Ohio as the first permanent settlement of the new United States in the newly organized Northwest Territory.
The Ohio Lands were the several grants, tracts, districts and cessions which make up what is now the U.S. state of Ohio. The Ohio Country was one of the first settled parts of the Midwest, and indeed one of the first settled parts of the United States beyond the original 13 colonies. The land that became first the anchor of the Northwest Territory and later Ohio was cobbled together from a variety of sources and owners.
The first principal meridian is a meridian that began at the junction of the Ohio River and Great Miami River. It extends north on the boundary line between the states of Ohio and Indiana, and roughly approximates to the meridian of longitude 84° 48′ 50″ west from Greenwich. The ranges of the public surveys in the state of Ohio, west of the Scioto River, are numbered from this meridian.
The Seven Ranges was a land tract in eastern Ohio that was the first tract to be surveyed in what became the Public Land Survey System. The tract is 42 miles (68 km) across the northern edge, 91 miles (146 km) on the western edge, with the south and east sides along the Ohio River. It consists of all of Monroe, Harrison, Belmont and Jefferson, and portions of Carroll, Columbiana, Tuscarawas, Guernsey, Noble, and Washington County.
Seven Ranges Terminus is a stone surveying marker near Magnolia, Ohio that marks the completion of the first step in opening the lands northwest of the Ohio River to sale and settlement by Americans. This survey marked the first application of the rectangular plan for subdividing land.
The United States Military District was a land tract in central Ohio that was established by the Congress to compensate veterans of the American Revolutionary War for their service. The tract contains 2,539,110 acres (10,275.4 km2) in Noble, Guernsey, Tuscarawas, Muskingum, Coshocton, Holmes, Licking, Knox, Franklin, Delaware, Morrow, and Marion Counties.
The Salt Reservations were a collection of land tracts surrounding salt springs in Ohio and some other states that were donated to the states by the federal government early in the 19th century.
The Twelve Mile Square Reservation, also called the Twelve Mile Square Reserve, was a tract of land in Ohio ceded by Indians to the United States of America in the Treaty of Greenville in 1795. This particular area of land immediately surrounding Fort Miami was considered to be of strategic importance by the United States government representatives. It was subsequently surveyed in a manner different from surrounding land, and lots sold, or granted, to settlers.
The Two Mile Square Reservation or Two Mile Square Reserve was a tract of land in Ohio ceded by Native Americans to the United States of America in the Treaty of Greenville in 1795. It was subsequently surveyed in a manner different from surrounding land, and lots sold to settlers.
North and East of the First Principal Meridian is a survey and land description in the northwest part of the American state called Ohio.
Zane's Tracts were three parcels of land in the Northwest Territory of the United States, later Ohio, that the federal government granted to Ebenezer Zane late in the 18th century, as compensation for establishing a road with ferry service over several rivers.
Indian Land Grants were land tracts granted to various Indians by Treaty or by United States Congressional action in the Nineteenth century in northwestern Ohio.
Israel Ludlow was a government surveyor who helped found Cincinnati, Dayton and Hamilton in southwest Ohio.
