To determine property boundary lines, Bob looked at the deed description, which says things like "
the Northwest Quarter of the Northwest Quarter (NW 1/4), containing 40 acres, more or less, being in Section 33, Township 14 North, Range 26 West." The Public Land Survey System, set up after the Northwest Ordinance of 1787 through the vision of Thomas Jefferson, carved the United States up into rectangular "townships," each 6 miles square. Each township was divided into 36 "sections," which were further subdivided into corners to ease surveying. The Arkansas territory was surveyed beginning in the early 1800s... this was no easy feat. Teams of men slogged through Delta swampland and steep, forested Ozark hills with primitive survey equipment of the day-- long chains, compasses, and log books.
As you can imagine, error was inevitable. When GPS became accessible to the public in the 1990s, property boundary surveys became much more accurate. A landowner might find that his property lines were "off" by sometimes 60 feet or more when corrected using GPS. At Williams Woods, several fence lines were 20 to 30 feet over from the line given by our GPS unit. This inconsistency might be explained by decreased accuracy of the GPS unit because of tree cover, or perhaps the barbed wire fence was erected using an older, less accurate survey technique. I guess we'll find out when we return with high-accuracy GPS units.
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