Cook County, Illinois 1:1200-Scale Administrative Districts Digital Data Set, Version 1.0, June 2002

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Cook County Board of Commissioners
Publication_Date: 20020201
Title:
Cook County, Illinois 1:1200-Scale Administrative Districts Digital Data Set, Version 1.0, June 2002
Edition: 2001
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Chicago, Illinois
Publisher: Cook County Board of Commissioners
Online_Linkage: To be determined at later date
Description:
Abstract:
Cook County contains many types of taxing authorities that account for approximately 800 individual tax districts. Taxes are levied against tax parcels through the use of tax codes, each of which represents a specific combination of tax districts that impose taxes on a particular parcel. Within this geodatabase, for each type of taxing authority, a feature class is defined with attributes appropriate to that type of tax agency.

This administrative feature dataset functions as maintenance support for the tax district boundaries. As such, the tax code value for each tax parcel is assigned to each atomic polygon within the geodatabase.

The tax agency types included in the database are: Community College Districts Cook County Drainage Districts Elementary School Districts Fire Protection Districts Forest Preserve Districts General Assistance Districts High School Districts Home Equity Assurance Districts Library Districts Library Fund Districts Mental Health Districts Mosquito Abatement Districts Municipalities Park Districts Political Townships Public Health Districts Road and Bridge Maintenance Districts Sanitary Districts Special Police Districts Special Service Areas Street Lighting Districts Suburban TB Sanitarium Districts Tax Increment Fund (TIF) Districts Unit School Districts Water Commission/River Conservancy Districts

The cadastral data for Cook County have previously not been digital nor automated. This project is the initial automation for this information. This database was designed to represent a continuous, non-overlapping spatial database accounting for all land area in Cook County.

Purpose:
The Cadastral data set is a depiction of taxable properties in Cook County with selected associated features for enhancement. The purpose of creating this cadastral geodatabase was to update previous data sets and integrate the data with other data sets based on a common geography (digital orthophotoimagery), and serve as a standard cadastral database for virtually all cadastral applications in the County. The creation of this digital cadastral database will allow Cook County to supplant hard-copy tax maps, which are used to illustrate parcel boundaries, with a comprehensive GIS database referenced to an accurate planimetric base map and digital orthoimagery. The County will thus be able to perform maintenance of its land records in the GIS database and automate queries and map output. The Cook County Assessor will not use this database for assessment purposes (such as area of the property). However, the tax map serves the Cook County Clerk to graphically depict legal descriptions of all parcels in Cook County as the tax map represents them.

The primary sources of data for the Cook County cadastral GIS database are the approximately 8,800 tax map "pages" maintained by the Cook County Clerk's Office. All information appearing on existing tax maps as of tax years 2000 or 2001 was incorporated into the cadastral database. The maps are maintained by the Clerk's Office on Mylar and have been published annually.

The County's system of tax maps is based on the Illinois Public Land Survey System (PLSS). In the PLSS, each township is divided into 36 sections, and each section into four quarter-sections. A quarter-section is further divided into two tax map sheets, often called "pages". Each tax map (1/4 mile by 1/2 mile) represents the east or west half of one quarter-section, and typically there are eight tax maps per section. There can be additional pages, known as "flysheets" or "flyleaves", which provide additional information as to subdivisions, condominium/unit, and floor-plans/elevations.

It is not intended that the digital cadastral feature data set should match perfectly with the digital orthoimagery, but rather that it match relatively well so that the digital orthoimagery would provide a visual backdrop to the cadastral information and replicate the tax maps. The tax maps themselves are graphical representations of legal descriptions but cannot be used in place of legal descriptions. As such, this digital cadastral database should not be used in place of legal descriptions, where warranted.

Supplemental_Information:
Tax agency districts feature classes were created based on related tables within the geodatabase. Certain Tax Increment Fund (TIF) districts are more complicated in their legal description and were historically difficult to map. Now they can be generated from the parcel information. The school, park, library, and other tax districts will be standardized to the parcel database.

The tax code component of the GIS database has been modeled as an ArcInfo feature class of tax code polygons. The basic polygon unit in the tax code feature class is a parcel polygon. There are often more than one polygon with the same tax code, and these polygons may be noncontiguous. The TAXCODE attribute is a 5-digit code that is unique, with the first two digits representing the political township number.

Three tables store tax code information: the ASSESSOR_MASTER_FILE, CLERK_TAXCODE_FILE, and TAX_AGENCY_FILE. The ASSESSOR_MASTER_FILE contains the tax code value for each PIN. The CLERK_TAXCODE_FILE contains mappings from each tax code value to the multiple tax agencies that comprise a particular tax code. The TAX_AGENCY_FILE contains addresses and contact information for each tax agency.

With the exception of municipalities, tax district polygons were created by dissolving parcel boundaries on tax district value and then digitizing a boundary polygon around the extent, following street midlines when districts are separated by rights of way. In cases which where tax districts appear to share a boundary segment with a municipality, the municipality boundary line was applied to the tax district polygon. With the exception of special service areas (which may overlap one another), all tax district polygons within a given feature class are discrete.

Due to a state statute requiring municipalities when annexing property to incorporate also annex to the far side of adjacent rights of way, if not previously incorporated in their entirety at the time of annexation (effective retroactively at the time of adoption), municipality polygons were captured using the Cook County Highway Department municipality coverage as a guide.

This cadastral feature data set was originally developed as an ArcInfo coverage. Throughout the metadata, there will be information pertaining to the general data, as well as more specific information referring to the data when obtained and used as an ArcInfo coverage, and an ArcGIS geodatabase. In metadata fields where specific information is required, it will be listed in the same order.

The original data set was created as an ArcInfo coverage and was later converted to an ArcGIS geodatabase. The current data format, as used by the Cook County government, is a geodatabase. The ArcInfo geodatabase model supports topologically integrated feature classes similar to the ArcInfo coverage model but extends the coverage model to support relationship classes, complex networks, and object-oriented features. Geodatabases contain feature classes (which can be organized into feature datasets) and tables. For more information about the use and format of ArcGIS geodatabases, please consult the Environmental Systems Research Institute (ESRI) web page at <http://www.esri.com>.

This data set is one in a series of five cadastral data sets for Cook County, Illinois.

In the cadastral database model, atomic polygons have been aggregated into various layers based on key attributes. Each layer may then be linked to ancillary tables and objects based on its key attribute.

For information regarding available distribution formats, please contact the individual listed as the Contact_Person in the Distribution_Information section of this metadata document.

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2000
Ending_Date: 2001
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Tax maps are published once every calendar year, on February 1
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -88.2
East_Bounding_Coordinate: -87.5
North_Bounding_Coordinate: 42.1
South_Bounding_Coordinate: 41.4
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: tax district
Theme_Keyword: cadastral
Theme_Keyword: tax map
Theme_Keyword: administrative
Theme_Keyword: tax agency
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Cook County
Place_Keyword: Chicago
Place_Keyword: Illinois
Place_Keyword: northeastern Illinois
Place_Keyword: Barrington
Place_Keyword: Berwyn
Place_Keyword: Bloom
Place_Keyword: Bremen
Place_Keyword: Calumet
Place_Keyword: Cicero
Place_Keyword: Elk Grove
Place_Keyword: Evanston
Place_Keyword: Hanover
Place_Keyword: Hyde Park
Place_Keyword: Jefferson
Place_Keyword: Lake
Place_Keyword: Lake View
Place_Keyword: Lemont
Place_Keyword: Leyden
Place_Keyword: Lyons
Place_Keyword: Maine
Place_Keyword: New Trier
Place_Keyword: Niles
Place_Keyword: North
Place_Keyword: Northfield
Place_Keyword: Norwood Park
Place_Keyword: Oak Park
Place_Keyword: Orland
Place_Keyword: Palatine
Place_Keyword: Palos
Place_Keyword: Proviso
Place_Keyword: Rich
Place_Keyword: River Forest
Place_Keyword: Riverside
Place_Keyword: Rogers Park
Place_Keyword: Schaumburg
Place_Keyword: South
Place_Keyword: Stickney
Place_Keyword: Thorton
Place_Keyword: West
Place_Keyword: Wheeling
Place_Keyword: Worth
Access_Constraints:
There may be attributes for this dataset which are listed in this metadata record but which the recipient will not receive. These portions of the dataset are for internal use by Cook County only and are not subject to distribution.
Use_Constraints:
Under no circumstances may the data be redistributed or made available over a network without explicit permission from the Cook County Department of Office Technology.

It is required that the Cook County Board of Commissioners be cited in any products generated from the data. The following source citation must be included: "Source: Cook County, Illinois 1:1200-Scale Administrative Districts Digital Data Set, Version 1.0, June 2002."

Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Office of the Cook County Clerk
Contact_Person: Tanya Anthofer
Contact_Position: GIS Manager
Contact_Address:
Address_Type: mailing and physical address
Address:
Cook County Clerk Room 434 Map Dept 118 N. Clark St
City: Chicago
State_or_Province: Illinois
Postal_Code: 60602
Country: USA
Contact_Voice_Telephone: 312-603-6229
Contact_Facsimile_Telephone: 312-603-6717
Contact_Electronic_Mail_Address: TANTHOF@cookcountygov.com
Hours_of_Service:
09:00 - 17:00, Central Time Zone, Monday - Friday, except holidays
Data_Set_Credit:
David Orr, Cook County Clerk, was instrumental in the process of creating digital cadastral data layers for Cook County, Illinois.
Native_Data_Set_Environment:
ArcGIS 8.x running on an IBM server with Windows 2000 operating system.

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The attributes in this data set are estimated to have very good accuracy, to a contract-specified level of 98% accuracy. This data set and its attributes were subjected to extensive quality control checks, both automated and manual/visual, throughout its development. The QC was performed by the vendor(s) creating the data set, while the final quality inspection and approval of the data set was performed by staff of Cook County.
Logical_Consistency_Report:
Features are stored in double precision, using ESRI ARCGIS 8.x software, as a geodatabase.

As cadastral features were digitized from paper tax maps and completed, they were checked against those images adjacent to them to ensure correct edgematching and completeness and correct coding of and lines which crossed onto adjoining images.

Completeness_Report:
This feature data set includes all features found on the Cook County Tax Maps as of 1 February 2001. Completeness is judged to be excellent, based on repeated examination and usage.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
This data set was created in part using digital orthoimagery as a base, which meets National Map Accuracy Standards for 1"=100' data products, and has an absolute horizontal positional accuracy of +/- 2.5 feet (+/- 0.7625 meters).

Additionally, this data set was subjected to numerous vendor automatic and manual quality control checks to ensure the positional accuracy of the data set throughout the processing.

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Cook County Board of Commissioners
Publication_Date: 1998
Title:
Cook County, Illinois 1998 1:1200-scale Black and White Digital Orthoimagery, February 2002
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Chicago, Illinois
Publisher: Cook County Board of Commissioners
Source_Scale_Denominator: 1200
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 19980417
Single_Date/Time:
Calendar_Date: 19980418
Single_Date/Time:
Calendar_Date: 19980419
Single_Date/Time:
Calendar_Date: 19980423
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: 1998_Digital_Orthoimagery
Source_Contribution:
Provided background base for verification of geographical accuracy of data set.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Cook County Clerk and Cook County Board of Commissioners
Publication_Date: 20010201
Title: Cook County Tax Maps
Geospatial_Data_Presentation_Form: multiple map pages
Publication_Information:
Publication_Place: Chicago, Illinois
Publisher: Cook County Board of Commissioners
Other_Citation_Details: 8,800 plus map sheets
Online_Linkage: TBD
Source_Scale_Denominator: 1200
Type_of_Source_Media: stable-base material
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2000
Ending_Date: 2001
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Current_Tax_Maps
Source_Contribution:
The mylar tax maps provided the base from which the digital cadastral data layers were created.
Process_Step:
Process_Description:
1.0 Scan Tax Maps: TeamWerks, Inc. (TeamWerks) scanned all available current (as of 2000) Cook County Tax Maps (Current_Tax_Maps), at a resolution of 300 dots per inch (dpi) and delivered them as TIFF images to two contractors working on the tax map processes, Smart Data Strategies, Inc. (SDS) and Catalyst Consulting Group (Catalyst).
Source_Used_Citation_Abbreviation: Current_Tax_Maps
Process_Date: 2000-2001
Source_Produced_Citation_Abbreviation: Scanned_Tax_Maps
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Environmental Systems Research Institute, Inc. (ESRI), Professional Services
Contact_Person: Charlie Wells
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909/793-2853
Contact_Electronic_Mail_Address: professionalservices@esri.com
Process_Step:
Process_Description:
2.0 Georeferencing Tax Maps: SDS georeferenced their project area's Scanned_Tax_Maps to the 1998_Digital_Orthophotos base by aligning common road intersections observed on each. Where Scanned_Tax_Maps did not have a sufficient number of road intersections for georeferencing, SDS technicians visually aligned the Scanned_Tax_Maps to the 1998_Digital_Orthophotos using obvious occupation lines. Thus, real-world coordinates were established as control points for the georeferencing process. This georeferencing step was also performed by Catalyst for the geographical area not covered by SDS. Catalyst then sent their output product to GIS Data (ESRI [Thailand] Co. Ltd.) (GIS Data).
Source_Used_Citation_Abbreviation: Scanned_Tax_Maps, 1998_Digital_Orthoimagery
Process_Date: 2000 - 2001
Source_Produced_Citation_Abbreviation: Georeferenced_Tax_Maps
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Environmental Systems Research Institute, Inc. (ESRI), Professional Services
Contact_Person: Charlie Wells
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909/793-2853
Contact_Electronic_Mail_Address: professionalservices@esri.com
Process_Step:
Process_Description:
3.0 Line Work Digitization: SDS and ESRI (Thailand) Co. Ltd. (GIS Data) digitized line work from the Georeferenced_Tax_Maps. GIS Data performed line work digitization using Georeferenced_Tax_Maps from Catalyst. Although SDS and GIS Data used different hardware and software systems to perform these functions, both followed the same procedures with similar methods. Technicians used the Georeferenced_Tax_Maps to "heads-up" digitize and construct line work, creating parcels, blocks, subdivisions, and rights-of-way. All boundary information was placed, such as subdivision, block, and page boundaries.

The "Best Fit" concept was used in the production by SDS. The parcels were digitized using 1998_Digital_Orthophotos and Georeferenced_Tax_Maps as background sources, as the technician used ground evidence to register the property boundaries. Fence lines, hedgerows, building outlines, ditch lines, lakes, and streams, along with the Georeferenced_Tax_Maps were used to determine parcel lines and other boundaries. SDS technicians aligned small blocks of parcels to the ground evidence base (1998_Digital_Orthophotos) and then performed line work digitization. This process thus provided an accurate approach to parcel conversion and isolated parcels requiring rigorous editing. Automatic quality control checks were placed throughout the production flow in order to identify errors or omissions early in the conversion process.

GIS Data performed heads-up digitization of line work directly from the Georeferenced_Tax_Maps. The 1998_Digital_Orthophotos were used for reference to resolve conflicts and make some boundary determinations.

Please refer to the document "GIS Database Development Procedures Manual, Final Version, May 2001", by ESRI, for production rules. This document may be obtained from the Cook County Assessor's Office or from the Cook County Department of Office Technology.

Source_Used_Citation_Abbreviation: 1998_Digital_Orthophotos, Georeferenced_Tax_Maps
Process_Date: 2000 - 2001
Source_Produced_Citation_Abbreviation: Georeferenced_Digitized_Tax_Maps
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Environmental Systems Research Institute, Inc. (ESRI), Professional Services
Contact_Person: Charlie Wells
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909/793-2853
Contact_Electronic_Mail_Address: professionalservices@esri.com
Process_Step:
Process_Description:
4.0 Adding Annotation: Annotation was added to the Georeferenced_Digitized_Tax_Maps to reflect all of the annotation information on the original Current_Tax_Maps. In urban areas, this typically included parcel number, dimensions, street names, block numbers, and subdivision reference and section numbers, among other features. Cook County approved all fonts and sizes as well as placement criteria, which were developed according to the Current_Tax_Maps.
Source_Used_Citation_Abbreviation: Georeferenced_Digitized_Tax_Maps, Current_Tax_Maps
Process_Date: 2000 - 2001
Source_Produced_Citation_Abbreviation: Annotated_Georeferenced_Digitized_Tax_Maps
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Environmental Systems Research Institute, Inc. (ESRI), Professional Services
Contact_Person: Charlie Wells
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909/793-2853
Contact_Electronic_Mail_Address: professionalservices@esri.com
Process_Step:
Process_Description:
5.0 Edgematching: Each consultant (GIS Data and SDS) performed typical automatic and visual edgematching procedures throughout the processing. These procedures included customized routines to verify geometric and attribute edgematching.
Source_Used_Citation_Abbreviation: Various_Process_Outputs
Process_Date: 2000 - 2002
Source_Produced_Citation_Abbreviation: Various_Process_Outputs
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Environmental Systems Research Institute, Inc. (ESRI), Professional Services
Contact_Person: Charlie Wells
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909/793-2853
Contact_Electronic_Mail_Address: professionalservices@esri.com
Process_Step:
Process_Description:
6.0 Quality Assurance/Quality Control: Rigid in-process and postprocess QC measures were implemented throughout the processing to ensure the delivery of quality data. Internal QC processes were performed by the edit staff followed by the contractors' QA/QC management teams. Digital files were required to pass each phase of the QA/QC process with complete accuracy prior to their delivery to Cook County. To supplement on-screen edit processes, hard-copy plots were created to assist editing technicians in reviewing the map data. All plots were checked against the original source documents to ensure accuracy and quality. Automated digital checks were also performed. All parcel line work and annotation were validated by quality audits at several points in the processing.
Source_Used_Citation_Abbreviation: Various_Process_Outputs
Process_Date: 2000 - 2002
Source_Produced_Citation_Abbreviation: QC_Annotated_Georeferenced_Digitized_Tax_Maps
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Environmental Systems Research Institute, Inc. (ESRI), Professional Services
Contact_Person: Charlie Wells
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909/793-2853
Contact_Electronic_Mail_Address: professionalservices@esri.com
Process_Step:
Process_Description:
7.0 Translation into ArcInfo: GIS Data performed their work in the ArcInfo environment; thus, no translation was required. GIS Data created Region Subclasses from the linework polygons for subdivisions, blocks, parcels, lots, and ROW and the associated Regions tables were populated.

For work performed by SDS, the QC_Annotated_Georeferenced_Digitized_Tax_Maps were translated from MicroStation to ArcInfo format. First, SDS used the ArcInfo IGDSARC command to translate the MicroStation file into a Master_Coverage. As objects in the Master_Coverage were coded into distinct ArcInfo objects, they were verified by proprietary macros to be free of dangles and topology errors. Then, those verified objects were removed from the Master_Coverage until all objects were translated. Automated procedures were then utilized to build polygons using the ArcInfo CLEAN command. The resulting polygons were attributed with the original annotation text and the ArcInfo REGIONDISSOLVE command was issued to create regions from the various polygons.

Source_Used_Citation_Abbreviation: QC_Annotated_Georeferenced_Digitized_Tax_Maps
Process_Date: 2000 - 2002
Source_Produced_Citation_Abbreviation: Tax_Map_Regions
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Environmental Systems Research Institute, Inc. (ESRI), Professional Services
Contact_Person: Charlie Wells
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909/793-2853
Contact_Electronic_Mail_Address: professionalservices@esri.com
Process_Step:
Process_Description:
8.0 Quality Control of ArcInfo Database: To verify that the data in Tax_Map_Regions was captured correctly and that the ArcInfo database structure conformed to Cook County specifications, ESRI QCView software was used as part of the automated control process, and ArcView was used for visual verification by GIS Data. Coverages and themes were validated to ensure that they contained the appropriate feature classes and subclasses, and individual attribute item definitions were checked. Additionally, project parameters such as map projection, units, and applicable map scales were validated.
Source_Used_Citation_Abbreviation: Tax_Map_Regions
Process_Date: 2000 - 2002
Source_Produced_Citation_Abbreviation: QC_Tax_Map_Regions
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Environmental Systems Research Institute, Inc. (ESRI), Professional Services
Contact_Person: Charlie Wells
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909/793-2853
Contact_Electronic_Mail_Address: professionalservices@esri.com
Process_Step:
Process_Description:
9.0 Final Quality Control of Deliverables: The QC_Tax_Map_Regions was sent from SDS and GIS Data to ESRI Redlands, the primary contractor for this project. ESRI Redlands then sent QC_Tax_Map_Regions to one of two quality control contractors - either Catalyst Consulting, Inc., (Catalyst) or Spatial Data Integrations, Inc., (SDI). ESRI Redlands may have also performed some in-house quality control analysis on QC_Tax_Map_Regions delivered from GIS Data. In any case, the quality control contractors verified the overall quality of the QC_Tax_Map_Regions delivered using ESRI QC View software and ArcView. If the quality was not acceptable, the data set was sent back to the original developing contractor (SDS or GIS Data) for corrections. Any corrected data was then reviewed once again by either Catalyst or SDI or by ESRI Redlands for overall quality until it was acceptable.
Source_Used_Citation_Abbreviation: QC_Tax_Map_Regions
Process_Date: 2000 - 2002
Source_Produced_Citation_Abbreviation: Vendor_QC_Tax_Map_Regions.
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ESRI Redlands
Contact_Person: Charlie Wells
Contact_Position: Project Leader
Contact_Address:
Address_Type: mailing and physical address
Address: 380 New York Street
City: Redlands
State_or_Province: CA
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909-793-2853
Contact_Facsimile_Telephone: 909-307-3025
Process_Step:
Process_Description:
10.0 Cook County Quality Control of Deliverables: Following review by Catalyst or SDI, ESRI Redlands delivered the Vendor_QC_Tax_Map_Regions to Cook County. Using ArcView, Cook County performed its own QC of this coverage data. If the quality was not acceptable, the data set was returned to ESRI Redlands who either returned it to the original conversion subcontractor or performed the corrections themselves.
Source_Used_Citation_Abbreviation: Vendor_QC_Tax_Map_Regions
Process_Date: 2000 - 2002
Source_Produced_Citation_Abbreviation: Final_Cook_QC_Tax_Map_Regions
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ESRI Redlands
Contact_Person: Charlie Wells
Contact_Position: Project Leader
Contact_Address:
Address_Type: mailing and physical address
Address: 380 New York Street
City: Redlands
State_or_Province: CA
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909-793-2853
Contact_Facsimile_Telephone: 909-307-3025
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Office of the Cook County Clerk
Contact_Person: Tanya Anthofer
Contact_Position: GIS Manager
Contact_Address:
Address_Type: mailing and physical address
Address:
Cook County Clerk Room 434 Map Dept 118 N. Clark St
City: Chicago
State_or_Province: IL
Postal_Code: 60602
Country: USA
Contact_Voice_Telephone: 312-603-6229
Contact_Facsimile_Telephone: 312-603-6717
Process_Step:
Process_Description:
11.0 Convert to ArcGIS 8.2 Geodatabase: ESRI Redlands developed a coverage-to-geodatabase conversion module and converted the completed cadastral tax map (Final_Cook_QC_Tax_Map_Regions) data from ArcInfo coverage format to ArcGIS geodatabase format. ESRI Redlands then validated the conversion by reviewing the conversion statistics and checking the data within the geodatabase to ensure that no data was lost or corrupted.
Source_Used_Citation_Abbreviation: Final_Cook_QC_Tax_Map_Regions
Process_Date: 2002 - Present
Source_Produced_Citation_Abbreviation: Tax_Map_Geodatabase
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ESRI Redlands
Contact_Person: Charlie Wells
Contact_Position: Project Leader
Contact_Address:
Address_Type: mailing and physical address
Address: 380 New York Street
City: Redlands
State_or_Province: CA
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909-793-2853
Contact_Facsimile_Telephone: 909-307-3025
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Office of the Cook County Clerk
Contact_Person: Tanya Anthofer
Contact_Position: GIS Manager
Contact_Address:
Address_Type: mailing and physical address
Address:
Cook County Clerk Room 434 Map Dept 118 N. Clark St
City: Chicago
State_or_Province: IL
Postal_Code: 60602
Country: USA
Contact_Voice_Telephone: 312-603-6229
Contact_Facsimile_Telephone: 312-603-6717

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 1201
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999975
Longitude_of_Central_Meridian: -88.333333
Latitude_of_Projection_Origin: 36.666667
False_Easting: 984250.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000689
Ordinate_Resolution: 0.000689
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
Each record in this GIS dataset represents a taxing agency in Cook County, Illinois. Cook County contains many types of taxing authorities that account for approximately 800 individual tax districts. Taxes are levied against tax parcels through the use of tax codes, each of which represents a specific combination of tax districts that impose taxes on a particular parcel. Within this geodatabase, for each type of taxing authority, a feature class is defined with attributes appropriate to that type of tax agency.

The basic polygon unit in the tax code feature class is a parcel polygon. The tax code value for each tax parcel is assigned to each atomic polygon within the geodatabase. There are often more than one polygon with the same tax code, and these polygons may be noncontiguous. The TAXCODE attribute is a 5-digit code that is unique, with the first two digits representing the political township number.

Tax agency districts feature classes were created based on related tables within the geodatabase. Three tables store tax code information: the ASSESSOR_MASTER_FILE, CLERK_TAXCODE_FILE, and TAX_AGENCY_FILE. The ASSESSOR_MASTER_FILE contains the tax code value for each PIN. The CLERK_TAXCODE_FILE contains mappings from each tax code value to the multiple tax agencies that comprise a particular tax code. The TAX_AGENCY_FILE contains addresses and contact information for each tax agency.

The tax agency types included in the database are:

Community College Districts Cook County Drainage Districts Elementary School Districts Fire Protection Districts Forest Preserve Districts General Assistance Districts High School Districts Home Equity Assurance Districts Library Districts Library Fund Districts Mental Health Districts Mosquito Abatement Districts Municipalities Park Districts Political Townships Public Health Districts Road and Bridge Maintenance Districts Sanitary Districts Special Police Districts Special Service Areas Street Lighting Districts Suburban TB Sanitarium Districts Tax Increment Fund (TIF) Districts Unit School Districts Water Commission/River Conservancy Districts

Entity_and_Attribute_Detail_Citation:

--------------------------------------------------------------------

 ADMINISTRATIVE AREA FEATURE DATA SET
 Description: This geodatabase contains tax district lines,
              polygons, and annotation derived from Parcel
              Identification Numbers (PIN) and the
              Cook County mainframe databases. Related tables
              include the Assessor master file, clerk tax code file,
              and tax agency file. The basic polygon unit in the Tax
              District coverage is a tax code polygon. There may be
              more than one polygon with the same tax code and these
              polygons may be noncontiguous.

 Source: PIN and Cook County mainframe databases
 Format: Data stored in ESRI ArcGIS version 8.x
 Feature Types Maintained: Feature Class, Polygon, region, annotation

 NOTE: The data dictionaries that follow pertain to both the ArcInfo
       coverage and the ArcGIS Geodatabase feature class formats.

--------------------------------------------------------------------

 TAX CODE
 Description: Tax code polygons represent an atomic-level
              representation of polygons that, when aggregated, form
              specific types of tax district boundaries. The specific
              tax district boundaries are also included as individual
              feature classes and thier descriptions and definitions
              follow. (Base tax code polygon boundaries are formed by
              grouping parcels according to their tax codes.)


 TAXCODE.PAT
 TaxCode Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 TAXCODE             Tax code                           5      int


 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 COMMUNITY COLLEGE
 Description: Community College Districts in Cook County

 TAXDISTRICT.PATCOMMCOLL
 CommCollTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 DRAINAGE
 Description: Water drainage Districts in Cook County

 TAXDISTRICT.PATDRAINAGE
 DrainageTaxDistrict Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file

--------------------------------------------------------------------

 ELEMENTARY SCHOOL
 Description: Elementary School Districts in Cook County

 TAXDISTRICT.PATELEMSCHL
 ElemSchlTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 FIRE PROTECTION
 Description: Fire Protection Districts in Cook County

 TAXDISTRICT.PATFIREPRO
 FireProTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 FOREST PRESERVE
 Description: The Cook County Forest Preserve District

 TAXDISTRICT.PATFORESTPRE
 ForestPreTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 GENERAL ASSISTANCE
 Description: General Assistance Districts in Cook County provide
              various forms of miscellaneous assistance to parcels
              within their boundaries

 TAXDISTRICT.PATGENAST
 GenAstTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 HOME EQUITY ASSURANCE
 Description: Home Equity Assurance Districts in Cook County insure
              the value of home equity for residential properties
              within their boundaries

 TAXDISTRICT.PATHEA
 HEATaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 HIGH SCHOOL
 Description: High School Districts in Cook County

 TAXDISTRICT.PATHIGHSCHL
 HighSchlTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 LIBRARY
 Description: Library Districts in Cook County

 TAXDISTRICT.PATLIBR
 LibrTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 LIBRARY FUND
 Description: Library Fund Districts in Cook County fund their
              associated Libraries; these districts may include
              parcels not within the associated Library Districts

 TAXDISTRICT.PATLIBRFUND
 LibrFundTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 MENTAL HEALTH
 Description: Mental Health Districts in Cook County fund mental
              health programs for those areas included in each
              district

 TAXDISTRICT.PATMENHEALTH
 MenHealthTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 MOSQUITO ABATEMENT
 Description: Mosquito Abatement Districts in Cook County

 TAXDISTRICT.PATMOSQABAT
 MosqAbatTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 MUNICIPALITY
 Description: Municipalities completely or partially within the Cook
              County boundary

 TAXDISTRICT.PATMUNI
 MuniTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 PARK
 Description: Park Districts within Cook County

 TAXDISTRICT.PATPARK
 ParkTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 POLITICAL TOWNSHIP
 Description: Political Townships in Cook County

 TAXDISTRICT.PATPOLTOWNSHIP
 PolTownshipTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 PUBLIC HEALTH
 Description: Public Health Districts within Cook County

 TAXDISTRICT.PATPUBHEALTH
 PubHealthTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 ROAD AND BRIDGE MAINTENANCE
 Description: Road and Bridge Maintenance Districts within Cook County

 TAXDISTRICT.PATRDBR
 RdBrTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 SANITARY
 Description: Sanitary Districts within Cook County

 TAXDISTRICT.PATSANITARY
 SanitaryTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 SPECIAL POLICE
 Description: Police Districts within Cook County separate from
              individual municipal or County police agencies

 TAXDISTRICT.PATSPECPOL
 SpecPolTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 SPECIAL SERVICE
 Description: Special Service Areas within Cook County created to
              fund miscellaneous special projects. They are defined
              as a district that contains taxpayers who agree to pay
              in some measure for capital improvement projects
              (street lighting, paving, etc.) in coordination with a
              governmental unit, such as a municipality.
              SPECIAL NOTE: Unlike other tax districts, Special
              Service Areas are accessed through a related file.


 TAXDISTRICT.PATSPECSERV
 SpecServTaxDist (NOT A FEATURE CLASS)

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file

--------------------------------------------------------------------

 STREET LIGHTING
 Description: Street Lighting Districts in Cook County

 TAXDISTRICT.PATSTRLGHT
 StrLghtTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file


--------------------------------------------------------------------

 SUBURBAN TUBERCULOSIS SANITARIUM
 Description: The Cook County Suburban Tuberculosis Sanitarium

 TAXDISTRICT.PATSUBTBSAN
 SubTBSanTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file

--------------------------------------------------------------------

 TAX INCREMENT FUND
 Description: Tax Increment Financing Districts created in Cook
              County to stimulate growth within the individual
              'TIF' boundaries

 TAXDISTRICT.PATTIF
 TIFTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file

--------------------------------------------------------------------

 UNIT SCHOOL
 Description: Unit School Districts in Cook County

 TAXDISTRICT.PATUNITSCHL
 UnitSchlTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file

--------------------------------------------------------------------

 WATER COMMISSION AND RIVER CONSERVANCY
 Description: Water Commission and River Conservation Districts in
              Cook County

 TAXDISTRICT.PATWCRC
 WCRCTaxDist Feature Class

 Attribute Label     Attribute Definition            Attribute Format
                                                     wdth dec  type
 AGENCY              Agency number                      5      int
 AGENCY_DESC         Agency Name                       30      string
 TAXCODE             Tax code                           5      int

 AGENCY
 Attribute Definition: Agency number
 Attribute Definition Source: Cook County Clerk tax code file

 AGENCY_DESC
 Attribute Definition: Description of taxing agency
 Attribute Definition Source: Cook County Assessor's master file

 TAXCODE
 Attribute Definition: Tax code
 Attribute Definition Source: Cook County Assessor's master file

--------------------------------------------------------------------

 FOREST PRESERVE ANNOTATION
 Description:  Annotation for forest preserve districts

 TAXDISTRICT.TATFP_NM
 ForestAnno (ANNOTATION)


--------------------------------------------------------------------

 MUNICIPALITY ANNOTATION
 Description:  Annotation for municipality names

 TAXDISTRICT.TATMUNI_NM
 MuniAnno (ANNOTATION)


--------------------------------------------------------------------


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Office of the Cook County Clerk
Contact_Person: Tanya Anthofer
Contact_Position: GIS Manager
Contact_Address:
Address_Type: mailing and physical address
Address:
Cook County Clerk Room 434 Map Dept 118 N. Clark St
City: Chicago
State_or_Province: Illinois
Postal_Code: 60602
Country: USA
Contact_Voice_Telephone: 312-603-6229
Contact_Facsimile_Telephone: 312-603-6717
Contact_Electronic_Mail_Address: TANTHOF@cookcountygov.com
Hours_of_Service:
09:00 - 17:00, Central Time Zone, Monday - Friday, except holidays
Resource_Description:
Cadastre Administrative
Distribution_Liability:
Cook County is committed to offering its data users accurate, useful and current information. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the database may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data and other conditions specific to certain data. No warranty expressed or implied is made by Cook County regarding the accuracy or utility of this information.
Custom_Order_Process:
Call the individual listed as the Contact_Person in the Distribution_Information section of this metadata record to find out how to obtain this data set, the available formats, the available transfer media, compatibility, etc. This person will also be able to provide information about the fees associated with obtaining the data set.
Technical_Prerequisites:
User must be able to read either an ArcInfo coverage (in .e00 export format), an ArcView shapefile, or a personal geodatabase. Format compatibility is the user's responsibility.
Available_Time_Period:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20020201
Ending_Date: 20030201

Metadata_Reference_Information:
Metadata_Date: 20020626
Metadata_Review_Date: 20020626
Metadata_Future_Review_Date: 20020630
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Northeastern Illinois Planning Commission
Contact_Person: Linda Schwab
Contact_Position: Metadata Specialist/GIS Analyst
Contact_Address:
Address_Type: mailing and physical address
Address: 222 S. Riverside Plaza, Suite 1800
City: Chicago
State_or_Province: Illinois
Postal_Code: 60606
Country: USA
Contact_Voice_Telephone: 312/454-0400
Contact_Facsimile_Telephone: 312/454-0411
Contact_Electronic_Mail_Address: lschwab@nipc.org
Hours_of_Service:
09:00 - 17:00, Central Time Zone, Monday-Friday, except holidays
Contact_Instructions: Please contact during normal business hours
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints:
This metadata file is intended to accompany the geospatial data set identified and received from Cook County. It is not to be altered or summarized. Cook County does not support secondary distribution. If this geospatial data set was received from anyone besides the Cook County Department of Office Technology or the Cook County Assessor's Office, this metadata file and the geospatial data set it describes may lack integrity.

Generated by mp version 2.7.24 on Thu Jun 27 12:10:00 2002