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PLSS Centroids (Landnet) Wisconsin, 1996

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
Email
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
Email
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
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