Tom Heavisides, Office of Realty and Environmental Pla, 1985, Political Townships in Illinois: IGIS GIS Database GISDB.IL_ADMIN_Political_Township_Py, Illinois Department of Natural Resources, Champaign, Illinois.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
TSHIP_NUM The numeric township identifier by county. Each county has political township #1, #2, etc.
TSHIP_NAME Name of township in capital letters.
COUNT_FED_FIPS The 6 digit federal FIPS code for the state and county.
COUNTY_ The county FIPS number.
The purpose of this map is to show political (voting) townships in Illinois. Information contained in this data set is valid unless there has been re-districting since 1985.These data are appropriate for use in regional thematic analysis. The data are not appropriate as a geodetic, legal or engineering base. The data set was not and is not intended as a substitute for surveyed locations, such as can be determined by a registered Public Land Surveyor. Although useful in a GIS as a thematic, reference, or base layer for maps, the data set has no legal basis in the definition of boundaries or property lines.
The polygon features were imported into the ISGS SDE enterprise database following steps outlined in ISGS procedure GISDB_0009. Some redundant fields were removed.
Metadata updated.
Person who carried out this activity:
update IL_ADMIN_Political_Township_Py set tship_name = 'POPE' where objectid = 1299; commit;
Person who carried out this activity:
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Any use of these data is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice. Links to these are provided in the Cross References section.
Map information is to be used at a scientifically and cartographically appropriate scale, that is, at a scale no greater than indicated on the map or as described in the documentation of the map or map data. Map information is not appropriate for, and is not to be used as, a geodetic, legal, or engineering base. Map information has no legal basis in the definition of boundaries or property lines and is not intended as a substitute for surveyed locations such as can be determined by a registered Public Land Surveyor.
The data do not replace the need for detailed site-specific studies.
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Generated by mp version 2.8.25 on Thu Apr 02 09:53:56 2009