Boundary Surveying: Retracement, Evidence, and Proportioning
Core Concepts
Boundary surveying is the art of locating and monumenting the lines that already exist in law, not creating new ones. A candidate must be fluent in monumentation hierarchy: original monuments control over courses and distances, and courses and distances control over area. Other controlling evidence includes adjoining owners' possession lines, fence lines of long standing, calls for natural monuments (rivers, ridges, trees), artificial monuments, and recorded plats. Understand retracement versus original survey distinctions, proportioning (single-proportion, double-proportion, and grant-boundary methods), meander lines (which bound the water, not the title, in most riparian situations), and junior/senior rights where a senior deed's calls prevail.
Common Traps
Questions love to reverse the hierarchy: offering area as controlling when a monument exists. Watch for confusion between record bearings and observed bearings - magnetic declination changes, so record bearings are held and the angular relationship between lines is preserved. Another trap: proportioning a line when an original monument actually exists; proportioning is only for lost corners, not obliterated ones where position can be recovered. Also distinguish meander corner from riparian boundary and remember accretion/avulsion rules.
Worked Example / Rule of Thumb
Rule of thumb: "Monument beats distance, distance beats area, and nothing beats an undisturbed original corner." Example: a deed calls N 0°00'00" E 500.00 ft to an iron pin, but the pin is found at 497.20 ft. The pin controls; the record distance is held only as evidence of intent. If the pin were lost, you would proportion between the nearest original corners rather than adopt either the record or measured distance alone.