PS Surveying Exam Guide 2026: Boundary Law, Standards, and Practice
Video
Which agency administers the Oklahoma Law and Surveying (OLS) examination?
Oklahoma Statute And Rules
Question · Easy
Prepare for the 2026 NCEES PS exam with July 2026 pass rates, the current five-domain blueprint, official reference rules, test policies, and the July 2027 transition.
Blog
Original monument
Boundary Law and Evidence
Flashcard
In addition to the OLS examination, which two national NCEES examinations must an Oklahoma professional surveyor applicant pass?
Acronym for the township-and-range grid established by the ordinance of May 20, 1785.
Township grid
Guess the Term
PS Exam Framework and Boundary Evidence
1.1 Current NCEES Format and Blueprint
Study guide
What is the approximate testing time allotted for the in-person Part 1 of the Oklahoma Law and Surveying (OLS) examination?
Read the clue and guess the term in 6 tries.
Game
Controlling elements in a deed
The closed-book Part 1 of the OLS exam is most heavily weighted toward which subject area?
Question · Medium
Numbered strip of townships, six miles wide and running north-south, counted east or west from the principal meridian.
Which document is the primary federal authority for re-establishing original public land survey corners?
Public Land Survey System
Parol evidence in boundary work
In the PLSS, a standard township is nominally how many miles on each side?
___ line: the east-west reference run from an initial point, from which townships are counted north and south.
1.2 Legal Evidence Framework
A standard PLSS section nominally contains how many acres?
Swap tiles to line up three of the same term.
Term Match
Adverse possession
Sections within a PLSS township are numbered beginning in which corner and following what pattern?
Point in the federal rectangular surveys whose position is fixed by operation of law, whether set with a monument or only protracted on the plat.
Most of Oklahoma's PLSS surveys are referenced to which principal meridian?
Prescriptive easement
The Oklahoma Panhandle is surveyed and described from which meridian?
Kind of corner in the federal rectangular surveys whose original position cannot be recovered from traces or testimony, so it is restored by proportionate measurement.
1.3 Parol Evidence, Prescription, Adverse Possession, and Acquiescence
In the regular order of running PLSS lines, township exteriors are surveyed before subdivisional lines. Which lines are given the highest precedence in retracement?
Question · Hard
Flip two cards at a time to find matching terms.
Term Pairs
Boundary by acquiescence
What is the purpose of standard parallels (correction lines) in the PLSS?
Fractional subdivision of a section, left where the regular parts do not fit, whose area is computed from the field measurements.
Within a regular section, where are the excess or deficiency in measurement and fractional (government) lots normally placed?
Riparian vs. littoral rights
Which BLM corner status describes a corner whose original monument is gone but whose position can be recovered from acceptable evidence or reliable testimony?
Linear unit of 66 feet, still the legal unit for federal township surveys; 80 of them make a mile.
Survey units
1.4 Legal Descriptions and Conveyance Types
Under the BLM Manual, a 'lost corner' is one that:
Find five hidden terms in a grid of letters.
Term Search
Accretion vs. avulsion
Restoration of a lost corner by proportionate measurement should be used:
One hundredth of a 66-foot chain; 25 of them make a rod.
Single proportionate measurement is the appropriate method to restore which type of lost corner?
Senior and junior rights
In single proportionate measurement, how is the excess or deficiency between the two controlling existent corners distributed?
Modern name for the 25-link unit historically called a pole or perch, equal to one quarter of a chain.
Professional Practice and Standards
2.1 Records, Field, GNSS, and Computations
A lost interior section corner common to four sections is normally restored by which method?
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