NM Land Surveyor key terms

The process of re-establishing an existing property boundary by locating and evaluating the original monuments, records, and evidence, then following the original surveyor's intent rather than creating new lines.

The ranked order in which boundary evidence is weighed, generally placing natural monuments and original undisturbed monuments above artificial monuments, then records, then occupation, then area and measurement of course.

A physical marker described in a recorded survey or plat whose position and character are documented, allowing later surveyors to identify and hold the original corner location.

The practice of preserving or re-establishing a corner monument, often by setting a new marker in the same position and recording a reference tie or corner record before the original is disturbed.

A doctrine by which a person who openly, notoriously, exclusively, and continuously occupies another's land under a claim of right for the statutory period may acquire title, subject to New Mexico statutory and case law limits.

A right to use another's land acquired through open, notorious, adverse, and continuous use for the statutory period, typically narrower than ownership and limited to the use actually exercised.

An implied easement created when a parcel is landlocked or lacks practical access, allowing a route to a public road based on prior common ownership and strict necessity at the time of severance.

A right to pass across land owned by another, often held by a public entity or utility, which may be an easement or fee interest depending on the instrument and applicable New Mexico law.

A Spanish or Mexican colonial or territorial land grant whose boundaries and ownership were confirmed under U.S. and New Mexico law, often requiring special treatment in retracement because of community grants and unconfirmed claims.

A Spanish or Mexican grant made to a group of settlers rather than an individual, with common lands and individual allotments, requiring careful historical research to establish current ownership and boundaries.

The federal rectangular survey system that divides public lands into townships, ranges, sections, and aliquot parts, using principal meridians and base lines as references for describing land.

A north-south reference line from which township ranges are counted in the Public Land Survey System, paired with a base line to define the initial point of a survey area.

An east-west reference line in the Public Land Survey System from which township tiers are counted north and south, intersecting the principal meridian at the initial point.

The division of a one-square-mile section into aliquot parts such as half-sections and quarter-sections, with special rules for fractional lots along north and west boundaries.

An east-west line established at intervals in the Public Land Survey System where accumulated measurement error is adjusted, so township and section lines remain reasonably regular.

A reference framework defining the size, shape, and orientation of the Earth and the origin of coordinates, such as NAD83 or a modern realizations used for horizontal control.

The North American Datum of 1983, a geocentric datum used for horizontal coordinates in the United States, with later realizations such as NAD83(2011) refining positions.

The equipotential surface of the Earth's gravity field that approximates mean sea level, used as the reference for orthometric heights and separated from the ellipsoid by the geoid undulation.

A height above the geoid, commonly called elevation, derived from spirit leveling or GNSS observations combined with a geoid model.

A system of projected coordinates defined for each state to support mapping and surveying, using zones and map projections that limit distortion and are tied to a geodetic datum.

A mathematical transformation that converts positions on the curved Earth to a plane, introducing scale and angular distortion that must be accounted for in precise surveying.

The ratio between grid distance on a projection and true distance on the reference surface, used to reduce measured distances to grid or to convert grid distances to ground.

The process of adjusting a measured ground distance to the projection grid by applying the combined scale factor and elevation factor, so coordinates and distances remain consistent.

Global Navigation Satellite System, including GPS and other constellations, used for positioning through satellite signals, with accuracy depending on observation method, correction services, and site conditions.

Real-Time Kinematic positioning, a GNSS technique using carrier-phase corrections from a base station or network to achieve centimeter-level positions in the field in real time.

An electronic instrument combining an angle-measuring theodolite with an electronic distance meter, used to measure horizontal and vertical angles and distances to targets.

A survey method in which a series of connected courses is measured for angles and distances, forming a control network that can be adjusted and used to establish coordinates.

The difference between the computed ending position of a traverse and its known or starting position, indicating the accumulated measurement error before adjustment.

A statistical method that distributes measurement error among observations to produce the most probable coordinates, using weights based on estimated precision and allowing error analysis.

The difference between an observed value and its adjusted or computed value, used to assess the quality of observations and the consistency of an adjustment.

A map of a land division showing lots, blocks, streets, and dedications, prepared for approval and recording under state and local subdivision requirements.

The process by which a subdivision plat is reviewed and accepted by the governing authority before recording, often requiring compliance with local ordinances and state statutes.

A signed and sealed statement by a licensed surveyor on a map or document certifying the work performed and the surveyor's professional responsibility for it.

A survey that locates natural and cultural features and determines elevations, producing a map or digital model used for design, planning, and construction.

A line on a map connecting points of equal elevation, used to represent terrain shape, slope, and drainage in topographic mapping.

The field process of placing marks, stakes, or offsets at design positions for grading, utilities, structures, or roads, based on survey control and construction plans.

The science of obtaining measurements and mapping information from photographs or imagery, including aerial and terrestrial methods, using camera calibration and control.

Light Detection and Ranging, a remote sensing method that uses laser pulses to measure distances and produce dense point clouds for terrain, structures, and vegetation mapping.

An aerial or satellite image geometrically corrected so that scale is uniform and terrain displacement is removed, allowing it to be used as a map base.