MO Land Surveyor key terms

A point established by a survey to mark a boundary location, such as a section corner, quarter corner, or lot corner. Its position is fixed by the original government survey or a subsequent legally recognized survey.

A physical object placed or accepted to mark a corner or boundary line, such as an iron pin, stone, concrete post, or pipe. It provides physical evidence of a boundary location.

The process of re-establishing boundaries by locating and following the evidence of an earlier survey without creating new boundary lines. It relies on original monuments and records rather than new measurements alone.

The initial Public Land Survey System survey that created the section and township framework. Its corners and lines control later surveys, and mistakes in it are generally corrected by following the original evidence rather than by mathematical re-computation.

A method of restoring a lost corner by dividing the record distance between two found controlling corners in proportion to the measured distance. It is used only when the corner cannot be located by other evidence.

A corner whose position cannot be recovered from physical evidence or reliable testimony. It is re-established by legal rules such as proportion or single-proportion methods based on the nearest found controlling corners.

A corner whose monument no longer exists but whose position can be recovered from evidence such as nearby improvements, witness marks, or reliable testimony. It is not treated as lost if its location can be determined.

A monument placed near a corner to help locate it, often set at the intersection of offsets or on a nearby line. It is not itself the corner but provides evidence for finding the true corner.

Physical or documentary information used to establish boundaries, including monuments, field notes, plats, deeds, and testimony. In boundary retracement, evidence found on the ground generally carries more weight than new measurements.

The practice of recording and preserving the location of monuments and boundary evidence for future surveys. It includes filing records, setting witness monuments, and documenting found and set corners.

A legal doctrine under which a person can acquire title to land by open, notorious, exclusive, hostile, and continuous possession for a statutory period. Missouri has specific statutory requirements that a surveyor should understand.

A boundary established by the agreement of adjoining landowners when the true line is uncertain or disputed. Once agreed and acted upon, the agreed line can bind the parties and their successors.

A right to use another person's land acquired through open, continuous, and adverse use for a statutory period. It grants a use right rather than ownership of the land itself.

A legal right to use another person's land for a specific purpose, such as access or utilities. It does not transfer ownership but creates an encumbrance that a surveyor must show on plats and descriptions.

A corridor of land used for roads, utilities, or access, often held as an easement or fee strip. Surveyors must identify its location, width, and basis of title when mapping boundaries.

The rules adopted by the Missouri Board for Architects, Professional Engineers, Professional Land Surveyors and Professional Landscape Architects that set minimum requirements for land surveys, including research, field work, monumentation, and plat content.

The state board that licenses and regulates professional land surveyors in Missouri. It administers exams, investigates complaints, and enforces the statutes and minimum standards governing practice.

A person licensed by the state to practice land surveying, including boundary determination, plat preparation, and certification of surveys. Licensure requires education, experience, and examination under Missouri law.

A drawing prepared by a licensed surveyor showing boundaries, monuments, and related information for a parcel. Missouri minimum standards specify required content such as bearings, distances, and monument descriptions.

A signed and sealed document by which a licensed surveyor certifies the results of a survey. It typically includes a statement of the surveyor's responsibilities and the date and signature.

A method of describing land by reference to courses, distances, and monuments, often beginning at a point of beginning. It is common in Missouri deeds and requires careful retracement of calls and monuments.

The starting point of a metes and bounds description from which the boundary courses are traced and to which the description should close. It is usually marked by a monument or a described physical feature.

The difference between the starting and ending positions of a survey traverse or boundary description. A small misclosure indicates measurement consistency, but boundary location depends on evidence rather than closure alone.

A series of connected survey lines whose lengths and directions are measured to determine coordinates of points. Traverses may be closed or open and are adjusted to distribute measurement error.

A statistical method that distributes measurement error among observations to produce the most probable coordinates. It provides error estimates and is widely used in modern survey networks and GPS processing.

A reference framework defining the size and shape of the earth and the origin of coordinate systems. In the United States, NAD83 and NAVD88 are common horizontal and vertical datums for surveying and mapping.

A system of planar coordinates defined for each state to allow survey measurements to be expressed in a consistent grid. Missouri uses zones based on map projections with defined scale factors.

A mathematical method for representing the curved earth on a flat surface. Projections introduce distortion, so surveyors must account for scale and convergence when converting between ground and grid coordinates.

The ratio between a distance on a map projection or grid and the corresponding distance on the reference ellipsoid or ground. Combining grid scale and elevation factors converts between ground and grid distances.

A mathematical model approximating the shape of the earth, defined by semi-major and semi-minor axes. Geodetic coordinates and map projections are referenced to an ellipsoid such as GRS80.

The Global Positioning System, a satellite-based navigation and positioning system. Survey-grade GPS uses carrier-phase measurements and differential techniques to achieve centimeter-level accuracy for control and boundary work.

An electronic instrument combining an electronic theodolite and distance meter to measure angles and distances. It records data electronically and is commonly used for traverses, topographic mapping, and construction layout.

The process of determining elevation differences, commonly by differential leveling with an instrument and rod. It establishes vertical control for mapping, construction, and drainage design.

A fixed point of known elevation used as a reference for leveling and vertical control. Benchmarks may be permanent monuments or temporary points established for a project.

A line on a map connecting points of equal elevation. Contours show terrain shape and are used for topographic mapping, drainage analysis, and construction planning.

A map showing elevation and terrain features as well as planimetric details such as roads, buildings, and water. It is used for design, planning, and construction and is often prepared from field survey or photogrammetry.

The process of placing marks or stakes on the ground to show the location and elevation of designed improvements. It requires accurate reference to control and careful communication of offsets and grades.

A recorded map dividing land into lots, blocks, streets, and easements. It must comply with local subdivision regulations and Missouri statutes and serves as the legal description of the lots created.

A map of a survey or subdivision prepared for recording. It depicts boundaries, lots, monuments, and dedications and must meet content and approval requirements set by statute and local ordinance.

Relating to the inventory and mapping of land parcels and ownership for taxation or legal purposes. Cadastral maps show parcel boundaries and identifiers and are distinct from topographic maps.

A Public Land Survey System unit nominally six miles square, containing 36 sections. Townships are identified by their position north or south of a baseline and east or west of a principal meridian.

A PLSS unit nominally one mile square containing 640 acres, numbered within a township. Section corners and lines form the framework for many Missouri land descriptions.

A north-south reference line from which townships are measured east and west in the Public Land Survey System. Missouri is governed by principal meridians such as the Fifth Principal Meridian.

An east-west reference line from which townships are measured north and south in the Public Land Survey System. Together with the principal meridian, it forms the origin for township numbering.

A corner located at the midpoint of a section line, dividing the section into quarter sections. Its location is controlled by the original survey and must be retraced using record and physical evidence.

The professional standards of conduct governing honesty, competence, confidentiality, and conflicts of interest. Missouri licensed surveyors must follow the board's rules and act in the public interest.

The degree of care and skill that a reasonably prudent surveyor would exercise under similar circumstances. It is used to judge professional negligence and is often established through expert testimony.

A written legal instrument that conveys an interest in real property. Surveyors interpret deeds along with monuments and other evidence to determine boundary locations and prepare descriptions.

A line running along the middle of a road, street, or easement, often used as a reference for rights-of-way and descriptions. Surveyors must determine whether it is the legal boundary or merely a reference line.