![]() ![]() In both paper and in digital form, private companies have used information (including the PLSS) from USGS maps to construct value-added products. A more straightforward derivative is the DRG, a scanned version of the USGS topo map. The USGS topo map series are commonly used as source material for other maps. Note that the new US Topo product available from the USGS does not include PLSS data. ![]() Scanned USGS topographic maps are available for viewing through The National Map Viewer. (In the context of map accuracy standards, note that PLSS corners do not qualify as “well-defined points” and that only rarely can evidence of their precise location be seen in aerial photographs). In the best case, the accuracy of PLSS depiction is limited by the map scale. Only sections 1, 6, 31, and 36 are labeled. Information quality for corners is not symbolized. In places where the water in reservoirs has covered land originally surveyed, submerged corners and lines are shown.Īt smaller scales (1:100,000 and 1:250,000), USGS topo maps have a simpler representation of the PLSS. Corners for which the best information was available are identified with a point symbol. At the largest scale (1:24,000) these maps show section (and quarter-section) corners (and, implicitly, most meander corners) and section lines all sections are numbered, and towns and ranges are labeled. The sources from which these compilations were constructed are varied both in spatial accuracy and time, and the resulting mapping does not meet a single standard. Geological Survey’s topographic map series, all depict the PLSS. The most common general base maps covering the entirety of Wisconsin, the U.S. These maps cover a range of scales and accuracies. Wisconsin Mapping Bulletin PDF Archives (1975 – 2003)Ī variety of map types include a representation of the PLSS.Searchable Online News Archives (2003 – Present).WSRS2022: The Wisconsin Spatial Reference System 2022 Task Force. ![]()
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