Our county GIS lines are off by up to 100 yards or more in some instances. I know of a line that shows on the west side of a big ravine, but the actual marked line is on the east side of the ravine, with a recent survey map to back it up. If a hunter goes by the tax map or an app that gets its info from public databases they could get a trespassing fine. THE IMPORTANT PART IS: if you are walking through unfamiliar woods, always look for markers, and if you come to markers that don't agree with your handheld device and you are not sure, always go by the markers.They use GIS data, they’re lines will only be as accurate as your states/counties GIS mapping.
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