![]() It is based on the layout of the Public Land Survey System used in the United States, but has several differences. The Dominion Land Survey ( DLS French: arpentage des terres fédérales, ATF) is the method used to divide most of Western Canada into one-square-mile (2.6 km 2) sections for agricultural and other purposes. Likewise, township lines are measured in 6-mile increments north and south of lines of latitude, called baselines.Survey method used in most of western Canada Range lines are measured in 6-mile increments east and west of lines of longitude, called principal meridians. The vertical lines of the PLSS grid are called range lines, and the horizontals are called township lines. PLSS markings carved into a tree in the Beaverhead Mountains. Many boundaries are still labeled with physical markers, like disc-shaped metal “monuments” or wooden posts. ![]() Today, PLSS boundaries are still used to delineate property boundaries, and natural resource managers, surveyors, and hunters use range and township lines to talk about geographic location. ![]() It was devised in the 1780s, after the Revolutionary War, as a system for dividing land into plots, which could then be given to war veterans and prospective settlers of the then-wild West. The Public Land Survey System, or PLSS for short, is a system of boundary lines used for apportioning and describing land areas in the western United States. Coverage in Alaska (not pictured) has also been expanded. The PLSS grid layer, before and after the update.
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