Boundary Surveying and Retracement
This domain tests whether you can rank conflicting boundary evidence, distinguish retracement from a resurvey, and apply Missouri's mixed cadastral fabric to a real set of field facts.
Order of evidence
Natural monuments outrank artificial monuments, which outrank courses (bearings), then distances, then area. A proven original government corner is conclusive even when it is mathematically inconvenient - follow in the original surveyor's footsteps. Proportion a corner only when it is truly lost; an obliterated corner (evidence of the original position survives) is restored, never proportioned.
Missouri specifics
Northern and western Missouri is PLSS under the Fifth Principal Meridian. Much of the east and south is metes and bounds: French and Spanish grants near Ste. Genevieve and St. Louis, New Madrid certificates issued after the 1811–12 earthquakes, and donation or headright claims. On those tracts the grant calls govern, and the PLSS is often not the parent survey.
Worked example
A deed calls N 40°00' E, 100.00 ft from "an iron pin" to "a 24-inch white oak." The oak is gone; the pin is found and agrees with the adjoiner's fence and monument. The deed recites 2.00 acres, but the monument geometry yields 1.93 acres. Hold the pin, hold the bearing, and hold distance so far as it is consistent - the recited area is the weakest call and never drives monument location. If the pin were an unattached later monument and the oak stump with original blaze marks were identifiable, the oak would control instead.
Traps that cost marks
Rotating an 1850s GLO bearing to present magnetic north and "correcting" the record; double-proportioning a corner whose original stone still stands; treating a 0.03 ft tie as proof of a blunder; and writing that a line is "established" when the evidence supports only a professional opinion. Surveyors locate boundaries; they do not relocate them, and occupancy or parol-agreement disputes belong to the courts.