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Public Land Survey System

Public Land Survey System is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Public Land Survey System rather than just read about it. In short: 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.

Public Land Survey System — main illustration
Public Land Survey System — illustration

Key takeaways

  • Public Land Survey System belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Public Land Survey System to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Public Land Survey System from memory before moving on to harder problems.

Reference excerpt

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 United States 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 lands acquired by the United States.

History

Originally proposed by Thomas Jefferson to create a nation of "yeoman farmers", the PLSS began shortly after the American Revolutionary War, when the federal government became responsible for large areas of land west of the original thirteen states. The government wished both to distribute land to Revolutionary War soldiers in reward for their services and to sell land as a way of raising money for the nation. Before this could happen, the land needed to be surveyed. The Land Ordinance of 1785 marks the beginning of the Public Land Survey System. The Confederation Congress was deeply in debt following the Declaration of Independence. With little power to tax, the federal government decided to use the sale of the Western Territories to pay off war debt. The PLSS has been expanded and slightly modified by Letters of Instruction and Manuals of Instruction, issued by the General Land Office and the Bureau of Land Management, and is still in use in most of the states west of Pennsylvania, south to Florida, Alabama, and Mississippi, west to the Pacific Ocean, and north into the Arctic in Alaska.

Origins The original colonies (including their derivatives Maine, Vermont, Tennessee, Kentucky and West Virginia) continued the British system of metes and bounds. This system describes property lines based on local markers and bounds drawn by humans, often based on topography. A typical, yet simple, description under this system might read "From the point on the north bank of Muddy Creek one mile above the junction of Muddy and Indian Creeks, north for 400 yards, then northwest to the large standing rock, west to the large oak tree, south to Muddy Creek, then down the center of the creek to the starting point." Particularly in New England, this system was supplemented by drawing town plats. The metes and bounds system was used to describe a town of a generally rectangular shape, 4 to 6 miles (6.4 to 9.7 km) on a side. Within this boundary, a map or plat was maintained that showed all the individual lots or properties. There are some difficulties with this system:

Irregular shapes for properties make for much more complex descriptions. Over time, these descriptions become problematic as trees die or streams move by erosion. It was not useful for the large, newly surveyed tracts of land being opened in the west, which were being sold sight unseen to investors. In the 1783 Treaty of Paris recognizing the United States, Britain also recognized American rights to the land south of the Great Lakes and west to the Mississippi River. The Continental Congress passed the Land Ordinance of 1785 and then the Northwest Ordinance in 1787 to control the survey, sale, and settling of the new lands. The original 13 colonies donated their western lands to the new union, for the purpose of giving land for new states. These include the lands that formed the Northwest Territory, Kentucky, Tennessee, Alabama, and Mississippi. The state that gave up the most was Virginia, whose original claim included most of the Northwest Territory and Kentucky. Some of the western land was claimed by more than one state, especially in the northwest, where parts were claimed by Virginia, Pennsylvania, and Connecticut, all three of which had claimed lands all the way to the Pacific Ocean.

Application The first surveys under the new rectangular system were in eastern Ohio in an area called the Seven Ranges. The Beginning Point of the U.S. Public Land Survey is at a point on the Ohio-Pennsylvania border between East Liverpool, Ohio, and Ohioville, Pennsylvania, on private property. A National Historic Landmark marker commemorating the site lies on the side of a state highway, exactly 1,112 feet (339 m) to the north of the point.

Ohio was surveyed in several major subdivisions, collectively described as the Ohio Lands, each with its own meridian and baseline. The early surveying, particularly in Ohio, was performed with more speed than care, with the result that many of the oldest townships and sections vary considerably from their prescribed shape and area. Proceeding westward, accuracy became more of a consideration than rapid sale, and the system was simplified by establishing one major north–south line (principal meridian) and one east–west (base) line that control descriptions for an entire state or more. For example, a single Willamette Meridian serves both Oregon and Washington. County lines frequently follow the survey, so there are many rectangular counties in the Midwest and the West.

Non-PLSS regions

The system is in use in some capacity in most of the country, but large portions use other systems. The territory under the jurisdiction of the Thirteen Colonies at the time of independence did not adopt the PLSS, with the exception of the area that became the Northwest Territory and some of the southern states. This territory comprises Georgia, Connecticut, Delaware, Kentucky, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, and West Virginia. The old Cherokee lands in Georgia use the term section as a land designation, but it does not define the same area as the section used by the PLSS. Maine uses a variant of the system in unsettled parts of the state. Parts of Texas, western New York, northwest Pennsylvania, western Georgia, western Kentucky, middle and western Tennessee, and northern Maine use state-developed survey systems similar to PLSS. Other major exceptions to PLSS are:

… excerpt ends here. Continue reading the full article.

Illustrations

Public Land Survey System: This 1988 BLM map depicts the principal meridians and baselines used for surveying states (colored) in the Public Land Survey System.
This 1988 BLM map depicts the principal meridians and baselines used for surveying states (colored) in the Public Land Survey System.
Public Land Survey System: Map of territorial growth, 1775
Map of territorial growth, 1775
Public Land Survey System: Northwest territory
Northwest territory
Public Land Survey System: Monument referencing the beginning point of the PLSS
Monument referencing the beginning point of the PLSS
Public Land Survey System: Farmland in Kansas divided into quarter sections
Farmland in Kansas divided into quarter sections

Worked examples

Example 1 — a first encounter with Public Land Survey System

Start with the simplest possible case. Write down what Public Land Survey System claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Public Land Survey System before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Public Land Survey System ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Public Land Survey System

In research
Public Land Survey System appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Public Land Survey System in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Public Land Survey System is common in secondary-school and first-year university syllabi. It links to neighbouring topics Historical geography of the United States, Land surveying systems, Real estate in the United States, so understanding it makes those chapters shorter.
In everyday life
Look for Public Land Survey System outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Public Land Survey System in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Public Land Survey System means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Public Land Survey System out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Public Land Survey System in simple terms?

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 Tr…

Why does Public Land Survey System matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Public Land Survey System?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Public Land Survey System.

Tags

  • Historical geography of the United States
  • Land surveying systems
  • Real estate in the United States
  • Surveying of the United States

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