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PLSS Centroids (Landnet) Wisconsin, 1996
- Identification Information
- Spatial Reference Information
- Data Quality Information
- Distribution Information
- Spatial Representation Information
- Metadata Reference Information
Identification Information
- Citation
- Title
- PLSS Centroids (Landnet) Wisconsin, 1996
- Originator
- Wisconsin Department of Natural Resources
- Publication Date
- 2017-01-10
- Geospatial Data Presentation Form
- mapDigital
- Collection Title
- Statewide
- Abstract
- This data set is a point shapefile of centroids of Public Land Survey System (PLSS) units ranging from Townships to Quarter-Quarter-Sections. The data are derived from the Wisconsin DNR's "Landnet" database, automated from 1:24,000-scale sources.In December, 2016, GIS Section staff corrected erroneous Landnet code values in points contributing to errors in landnet quarter quarter NESE3342N14W
- Purpose
- This data set provides a means of identifying an x-y coordinate for the approximate center (centroid) of landnet units based on the corresponding standardized PLSS description (e.g., for PLSS Section this is DTRS -- Direction, Township, Range, and Section codes). This process is sometimes referred to as "protraction". The Landnet centroid shapefile includes coordinates in WTM83/91 and latitude/longitude expressed as decimal degrees or degrees, minutes and seconds. The features in the 24K Landnet database are presented for cartographic reference only and are not intended to be official or authoritative. Survey by a registered land surveyor is the only legal basis for determining actual land boundaries or locating PLSS corners.
- Supplemental Information
- Augmented original metadata with UW-Madison specific elements. A reference document, "24K Landnet Spatial Database Technical Documentation", 1996, Wisconsin DNR, includes details about the sources and characteristics of the 24K Landnet database: http://www.dnr.state.wi.us/maps/gis/documents/landnet_doc.pdf
- Temporal Extent
- Time Instant
- 1996-03-01T00:00:00
- Bounding Box
- West
- -92.96406
- East
- -86.71051
- North
- 47.081557
- South
- 42.459843
- ISO Topic Category
- location
- planningCadastre
- Place Keyword
-
Wisconsin
- Place Keyword Thesaurus
- GNIS
- Theme Keyword
- centroid
- section
- Landnet
- range
- township
- PLSS
- planningCadastre
-
location
- Theme Keyword Thesaurus
- Theme Keyword
-
Point
- Theme Keyword Thesaurus
- FGDC
- Theme Keyword
- Surveying
-
Public Lands
- Theme Keyword Thesaurus
- LCSH
- Legal Constraints
- Use Limitation
- Refer to: http://www.dnr.state.wi.us/org/legal/WebSiteLegalInformation.html
- Legal Constraints
- Use Limitation
- Although this data is being distributed by the University of Wisconsin-Madison, no warranty expressed or implied is made by the University as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the University in the use of this data, or related materials.
- Status
- completed
- Maintenance and Update Frequency
- notPlanned
- Language
- eng
- Credit
- WDNR
- Point of Contact
- Contact
- Wisconsin DNR, Bureau of Technology Services
- Position Name
- GIS Data Specialist
- Delivery Point
- P.O. Box 7921
- City
- Madison
- Administrative Area
- WI
- Postal Code
- 53707-7921
- Country
- US
- John.Laedlein@dnr.state.wi.us
- Phone
- (608) 264-8916
Spatial Reference Information
- Reference System Identifier
- Code
- 3071
- Code Space
- EPSG
- Version
Data Quality Information
- Quantitative Attribute Accuracy Report
- Lineage
- Process Step
- Description
- The 24K Landnet database was produced using workstation ArcInfo - Rev. 7, at the Wisconsin DNR Central Office in Madison, WI. ArcInfo regions were incorporated to more easily manage the various related themes. Data from cooperators were created on a variety of software and hardware platforms and converted to ArcInfo format. For a complete description of the processes used to create the 24K Landnet, refer to the '24K Landnet Process Documentation', 1996, Wisconsin DNR.
- Process Step
- Description
- Duplicate centroids for several Townships (DTRSQQ = "434210000", "224180000", "234190000", and "436220000") were deleted.
- Process Step
- Description
- Mis-labeled item names for latitude and longitude point coordinates were corrected.
- Process Step
- Description
- Duplicate centroids for two additional Townships (DTRSQQ = "437220000" and "441170000") were deleted.
- Process Step
- Description
- Centroid point locations were derived from the 24K Landnet database using a process that involved generating label points using ArcInfo. In cases where one or more corners of a PLSS unit fall on land outside the Wisconsin state boundary, the centroid of the PLSS unit was forced to fall inside the state by an automated process. This resulted in some anomalous centroid locations in areas near the Wisconsin state boundary.
- Process Date
- 2001-01-01T00:00:00
- Process Step
- Description
- Changed name of file from 'plss_centroids.shp' to 'WI_PLSSCentroids_1996.shp'.
- Process Date
- 2017-02-20T00:00:00
- Source
- Title
- USGS 7.5-minute map series (topographic)
- Originator
- US Geological Survey
- Description
- Line geometry and attribution for the original 24K Landnet from which the Landnet centroids were derived. Note that the USGS 24K topo maps were the source for the majority of data incorporated in the 24K Landnet database, but that various other data were also used. For a complete listing of these, refer to page 18 of the "24K Landnet Spatial Database Technical Documentation", 1996, Wisconsin DNR.
Distribution Information
- Format Name
- Shapefile
- Format Version
- 1.0
- Distributor
- Wisconsin DNR, Bureau of Technology Services
- Online Access
- https://gisdata.wisc.edu/public/WI_PLSSCentroids_1996.zip
- Protocol
- WWW:DOWNLOAD-1.0-http--download
- Name
- GeoData@Wisconsin
- Function
- download
Spatial Representation Information
- Vector
- Topology Level
- geometryOnly
- Vector Object Type
- point
- Vector Object Count
- 2.314232E6
Metadata Reference Information
- Hierarchy Level
- dataset
- Metadata File Identifier
- 06E60CBD-80E9-402D-AC58-9B33096261D7
- Metadata Point of Contact
- Name
- Arthur H. Robinson Map Library
- Position Name
- metadata technician
- Delivery Point
- 550 N. Park Street
- City
- Madison
- Administrative Area
- WI
- Postal Code
- 53706
- Country
- US
- askmap@library.wisc.edu
- Phone
- (608) 262-1471
- Metadata Date Stamp
- 2018-05-15
- Metadata Standard Name
- ISO 19139 Geographic Information - Metadata - Implementation Specification
- Metadata Standard Version
- 2007
- Character Set
- utf8