Illinois Department of Energy and Natural Resources Illinois Geographic Information System 1991 20040330 vector digital data ISGS GIS Database GISDB.IL_ADMIN_Municipality_1990_Py Champaign, Illinois lllinois State Geological Survey http://www.isgs.illinois.edu/ http://illinois.edu Municipalities with more than 250 people at 1:100,000 statewide. Polygon data. Incorporated areas for all of Illinois. Derived from TIGER/Line Files, July 1991, Bureau of the Census, US Department of Commerce. Nominal scale of 1:100,000. These data are appropriate for use in local and regional demographic analysis. Attributes include the name, FIPS code and type of municipality. A municipality may be composed of more than one polygon. Boundaries are subject to change and should not be considered definitive. 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. This is edition 20040330. The previous edition was 1.0. Recent updates: the data were converted from coverage storage model to SDE storage model. 1990 1990 census Complete None planned (-92.000000) (-87.000000) (43.000000) (36.000000) none municipal municipality city town boundary incorporated place none Illinois ISGS information must be obtained directly from the ISGS or from an authorized distributor. Be aware that ISGS information obtained from an unauthorized third party may have been altered subsequent to original distribution, or may no longer be current. Any access to these data, Web sites, computer systems, electronic services, and electronic networks 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. ISGS information is the property of and copyrighted by the Board of Trustees of the University of Illinois with all rights reserved.  University copyright policy is stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4. A link is provided in the Cross References section. Individuals or entities may make fair use of copyrighted ISGS material, such as reproducing a single figure or table, or using a brief text quotation, without obtaining formal permission, but in all cases the Illinois State Geological Survey must be credited as the source of the material. To reproduce ISGS information beyond the fair use standard, permission must be obtained from the ISGS Information Office, 615 East Peabody Drive, Champaign, Illinois 61820, 217-333-4747, isgs@isgs.illinois.edu. License fees and a license agreement may be required, depending on the proposed usage. 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. Please refer to the Distribution Information section. GIS processing: Illinois Department of Energy and Natural Resources Documentation: Illinois Department of Energy and Natural Resources, ISGS Quality Control: Illinois Department of Energy and Natural Resources ArcSDE 9.1 on Oracle 10g http://www.isgs.illinois.edu http://www.vpaa.uillinois.edu/policies/web_privacy.cfm http://www.uillinois.edu/trustees/rules.cfm#sec34 http://www.fs.uiuc.edu/cam/CAM/viii/viii-1.1.html Data are an accurate reflection of the Bureau of the Census TIGER/Line files. Attribute data are believed to be tied to the proper area with 100 percent accuracy relative to the Tiger/LINE data. None. All incorporateed places identified in the TIGER/Line files, 1991, are included. Data are derived from Tiger/LINE files and are believed to have reasonable positional accuracy to around 167 feet. This estimate is derived form USGS National Map Accuracy standards for map scale of 1:100,000. US Department of Commerce, Bureau of the Census. 1991 map 100000 online 1991 publication date none Municipal Boundaries Illinois Dept of Energy and Natural Resources (ENR), Illinois Geographic Information System (IGIS). 1993 map 100000 online 1993 publication date none Town names ARC/INFO TIGERTOOL used to convert to ARC/INFO format, municipal boundaries were extracted as were FIPS Place codes. Data were projected into the lambert conformal projection. 1993 Source coverage (municipal90 from IGIS archive) converted to double precision and reprojected to GCS_NAD83 using Workstation ArcInfo 7.2.1. The polygon features were imported into the ISGS SDE enterprise database following steps outlined in ISGS procedure GISDB_0009. Metadata updated. 20040330 09485600 Vector G-polygon 3454 0.000001 0.000001 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Attribute items are in typical ArcSDE feature class format. Those items requiring additional explanation are: FIPS_PLACE FIPS code for each census designated place or incorporated area. A CDP comprises densely settled concentrations of population that are identifiable by name, but not be legally incorporated. from FIPS Publication 55. PLACE_NAME Name of the municipality, Lower case with caps. from Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. TYPE See DOMAIN. General indication of size. from Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. Domain: roughly based on population differences <null> - not an incorporated area (internal islands) city - city town - town village - village CDP - Census Designated Place no census - Added independent of the census data Information Office, Illinois State Geological Survey (ISGS), a division of the Institute of Natural Resource Sustainability (INRS) of the University of Illinois mailing and physical address

615 East Peabody Drive

Champaign Illinois 61820 USA 217-333-4747 217-785-0211 isgs@isgs.illinois.edu 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time Refer to the Legal Notices of Terms and Conditions of the University of Illinois Web Privacy Policy (there is a link in the Cross References section) for policy statements regarding the following: Disclaimer of Liability Disclaimer of Warranties and Accuracy of Data Disclaimer of Endorsement Disclaimer for External Links Disclaimer of Duty to Continue Provision of Data Security Choice of Law By obtaining these data you agree to the provisions of the University of Illinois Web Privacy Policy, regardless of the manner in which the information was obtained. The data are intended for use with GIS software. The ISGS uses ESRI ArcGIS software, however, ESRI formats can be imported into many different GIS software packages. It is expected that customers who obtain these data have the technical expertise to use GIS software. The ISGS does not provide software support of any kind. 20090224 Please refer to the Distribution Information section. FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time The access constraints as stated for the data apply also to the metadata. Refer to the Access Constraints section of the Identification Information section. The use constraints as stated for the data apply also to the metadata. Refer to the Use Constraints section of the Identification Information section. http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile