NJDEP 2000 Census Block Groups in New Jersey
Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information
Identification Information
Section Index
Citation:
Citation Information:
Originator: NJ Department of Environmental Protection (NJDEP), Office of Information Resources Management (OIRM), Bureau of Geographic Information and Analysis (BGIA)
Publication Date: 20020901
Title: NJDEP 2000 Census Block Groups in New Jersey
Edition: 2000
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Trenton, NJ
Publisher: NJDEP
Online Linkage: http://www.state.nj.us/dep/gis/digidownload/zips/statewide/cengrp2000.zip
Description:
Abstract:
This data contains Census 2000 TIGER information at the Block Group Level for New Jersey. It was obtained from the U.S. Census Bureau's web site. Census 2000 Block Groups was derived from the Redistricting Census 2000 TIGER/Line files.
TIGER is an acronym for Topologically Integrated Geographic Encoding and Referencing.
The Census 2000 TIGER/Line files are an extract of selected geographic
and cartographic information from the Census TIGER data base. The Census 2000 TIGER/Line files consist of line segments representing physical features and governmental and statistical boundaries. The boundary information in the TIGER/Line files are for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes does not constitute a determination of jurisdictional authority or rights of ownership or entitlement.
The Census 2000 TIGER/Line files do NOT contain the Census 2000 urban areas. The files contain information distributed over a series of record types for the spatial objects of a county.
Purpose: This data was created for internal use by NJDEP to facilitate GIS analysis.
Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 9/2002
Time of Day: Unknown
Currentness Reference: publication date
Status:
Progress: Complete
Maintenance and Update Frequency: Unknown
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -75.593442
East Bounding Coordinate: -73.876637
North Bounding Coordinate: 41.357587
South Bounding Coordinate: 38.785047
Keywords:
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: Census Block Groups
Theme Keyword: Census 2000
Theme Keyword: TIGER/Line
Theme Keyword: NJDEP
Place:
Place Keyword Thesaurus: None
Place Keyword: New Jersey
Access Constraints: None
Use Constraints:
Data Distribution Agreement (NJDEP) Agrees to abide by the terms and conditions of the following:
I. Description of Data to be Provided
The data provided herein are distributed subject to the following conditions and restrictions:
Subject Data Layers
For all data contained herein, (NJDEP) makes no representations of any kind, including, but not limited to, the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the digital data layers furnished hereunder. NJDEP assumes no responsibility to maintain them in any manner or form.
II. Terms of Agreement
1. Digital data received from the NJDEP are to be used solely for internal purposes in the conduct of daily affairs.
2. The data are provided, as is, without warranty of any kind and the user is responsible for understanding the accuracy limitations of all digital data layers provided herein, as documented in the accompanying Data Dictionary and Readme files. Any reproduction or manipulation of the above data must ensure that the coordinate reference system remains intact.
3. Digital data received from the NJDEP may not be reproduced or redistributed for use by anyone without first obtaining written permission from the NJDEP. This clause is not intended to restrict distribution of printed mapped information produced from the digital data.
4. Any maps, publications, reports, or other documents produced as a result of this project that utilize NJDEP digital data will credit the NJDEP's Geographic Information System (GIS) as the source of the data with the following credit/disclaimer:
"This (map/publication/report) was developed using New Jersey Department of Environmental Protection Geographic Information System digital data, but this secondary product has not been verified by NJDEP and is not state-authorized."
5. Users shall require any independent contractor, hired to undertake work that will utilize digital data obtained from the NJDEP, to agree not to use, reproduce, or redistribute NJDEP GIS data for any purpose other than the specified contractual work. All copies of NJDEP GIS data utilized by an independent contractor will be required to be returned to the original user at the close of such contractual work.
Users hereby agree to abide by the use and reproduction conditions specified above and agree to hold any independent contractor to the same terms. By using data provided herein, the user acknowledges that terms and conditions have been read and that the user is bound by these criteria.
Browse Graphic:
Data Set Credit:
Acknowledgment of the U.S. Census Bureau would be appreciated for products derived from these files. TIGER, TIGER/Line, and Census TIGER are registered trademarks of the U.S. Census Bureau. ZCTA is a trademark of the U.S. Census Bureau.
Native Data Set Environment: ArcInfo 8.1.2
Data Quality Information
Section Index
Attribute Accuracy:
Attribute Accuracy Report:
Accurate against Federal information Processing Standards (FIPS), FIPS Publication 6-4, and FIPS-55 at the 100% level for the codes and base names. The remaining attribute information has been examined but has not been fully tested for accuracy.
Logical Consistency Report:
The feature network of lines (as represented by Record Types 1 and 2) is complete for census purposes. Spatial objects in TIGER/Line belong to the "Geometry and Topology" (GT) class of objects in the "Spatial Data Transfer Standard" (SDTS) FIPS Publication 173 and are topologically valid. Node/geometry and topology (GT)-polygon/chain relationships are collected or generated to satisfy topological edit requirements. These requirements include:
* Complete chains must begin and end at nodes.
* Complete chains must connect to each other at nodes.
* Complete chains do not extend through nodes.
* Left and right GT-polygons are defined for each complete chain element and are consistent throughout the extract process.
* The chains representing the limits of the files are free of gaps.
The Census Bureau performed automated tests to ensure logical consistency and limits of files. All polygons are tested for closure. The Census Bureau uses its internally developed Geographic Update System to enhance and modify spatial and attribute data in the Census TIGER data base. Standard geographic codes, such as FIPS codes for states, counties, municipalities, and places, are used when encoding spatial entities. The Census Bureau performed spatial data tests for logical consistency of the codes during the compilation of the original Census TIGER data base files. Most of the Codes themselves were provided to the Census Bureau by the USGS, the agency responsible for maintaining FIPS 55. Feature attribute information has been examined but has not been fully tested for consistency.
Completeness Report: Data completeness of the TIGER/Line files reflects the contents of the Census TIGER data base at the time the TIGER/Line files (Census 2000 version) were created.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report:
No tests were conducted by NJDEP.
The information present in these files is provided for the purposes of statistical analysis and census operations only. Coordinates in the TIGER/Line files have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest. The positional accuracy varies with the source materials used, but generally the information is no better than the established national map Accuracy standards for 1:100,000-scale maps from the U.S. Geological Survey (USGS); thus it is NOT suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface. The USGS 1:100,000-scale maps met national map accuracy standards and use coordinates defined by the North American Datum, 1983. For the contiguous 48 States, the cartographic fidelity of most of the Census 2000 TIGER/Line files, in areas outside the 1980 census Geographic Base File/Dual Independent Map Encoding (GBF/DIME) file coverage and selected other large metropolitan areas, compare favorably with the USGS 1:100,000-scale maps.
The Census Bureau cannot specify the accuracy of features inside of what was the 1980 GBF/DIME-File coverage or selected metropolitan areas. The Census Bureau added updates to the TIGER/Line files that enumerators annotated on maps sheets prepared from the Census TIGER data base as they attempted to traverse every street feature shown on the Census 2000 map sheets; the Census Bureau also made other corrections from updated map sheets supplied by local participants for Census Bureau programs. The locational accuracy of these updates is of unknown quality. In addition to the Federal, State, and local sources, portions of the files may contain information obtained in part from maps and other materials prepared by private companies. Despite the fact the TIGER/Line data positional accuracy is not as high as the coordinate values imply, the six-decimal place precision is useful when producing maps. The precision allows features that are next to each other on the ground to be placed in the correct position, on the map, relative to each other, without overlap.
Vertical Positional Accuracy:
Vertical Positional Accuracy Report: No tests were conducted by NJDEP.
Lineage:
Source Information:
Source Citation:
Citation Information:
Originator: U.S. Department of Commerce, U.S. Census Bureau, Geography Division
Publication Date: 2002
Title: Census TIGER Database
Edition: Census 2000
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Washington D.C.
Publisher: U.S. Census Bureau
Online Linkage: http://www.census.gov/geo/www/tiger/
Source Scale Denominator: 24000
Type of Source Media: On line
Source Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 2000
Time of Day: Unknown
Source Currentness Reference: publication date
Source Citation Abbreviation: TIGER
Source Contribution: Selected geographic and cartographic information (line segments) from the Census TIGER data base.
Process Step:
Process Description:
Census 2000 data files available from the Census Bureaus Web site were obtained as Zip files by NJDEP/OIRM/BGIA. Individual county layers were projected into NJ State plane feet, NAD83 and appended into one state-wide layer of Census 2000 Block Groups.
In order for others to use the information in the Census TIGER data base in a GIS or for other geographic applications, the Census Bureau releases periodic extracts of selected information from the Census TIGER data base, organized as topologically consistent networks. Software (TIGER DB routines) written by the Geography Division allows for efficient access to Census TIGER system data. TIGER/Line files are extracted from the Census TIGER data base by county or statistical equivalent area. Census TIGER data for a given county or statistical equivalent area is then distributed among 17 fixed length record ASCII files, each one containing attributes for either line, polygon, or landmark geographic data types. The Census Bureau has released various versions of the TIGER/Line files since 1988, with each version having more updates (feature and feature names, address ranges and ZIP Codes, coordinate updates, revised field definitions, etc.) than the previous version.
Process Date: 20020601
Process Contact:
Contact Information:
Contact Person Primary:
Contact Person: Craig Coutros
Contact Organization: NJ Dept. of Environmental Protection, Bureau of Geographic Information and Analysis
Contact Position: GIS Specialist
Contact Address:
Address Type: mailing and physical address
Address: 401 East State Street, First Floor, PO Box 428
City: Trenton
State or Province: New Jersey
Postal Code: 08625-0428
Country: USA
Contact Voice Telephone: 609-292-0899
Contact Facsimile Telephone: 609-292-7900
Contact Electronic Mail Address: Craig.Coutros@dep.state.nj.us
Hours of Service: 8-4
Cloud Cover: 0
Spatial Data Organization Information
Section Index
Direct Spatial Reference Method: Vector
Point and Vector Object Information:
SDTS Terms Description:
SDTS Point and Vector Object Type: G-polygon
Point and Vector Object Count: 6521
Spatial Reference Information
Section Index
Horizontal Coordinate System Definition:
Planar:
Grid Coordinate System:
Grid Coordinate System Name: State Plane Coordinate System 1983
State Plane Coordinate System:
SPCS Zone Identifier: 2900
Transverse Mercator:
Scale Factor at Central Meridian: 0.9999
Longitude of Central Meridian: -74.5
Latitude of Projection Origin: 38.833333
False Easting: 492125
False Northing: 0
Planar Coordinate Information:
Planar Coordinate Encoding Method: Coordinate Pair
Coordinate Representation:
Abscissa Resolution: 0.002048
Ordinate Resolution: 0.002048
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
Denominator of Flattening Ratio: 298.257
Entity and Attribute Information
Section Index
Detailed Description:
Entity Type:
Entity Type Label: cengrp2000
Entity Type Definition: 2000 Census Block Groups for New Jersey from the TIGER Census 2000
Entity Type Definition Source: US Census Bureau
Attribute:
Attribute Label: AREA
Attribute Definition: Block Group area in square feet
Attribute Definition Source: ESRI
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 195.0527
Range Domain Maximum: 9350000000
Attribute Units of Measure: sq ft
Attribute:
Attribute Label: CENGRP_
Attribute Definition: ESRI internal generated field
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: ESRI generated field
Attribute:
Attribute Label: CENGRP_ID
Attribute Definition: User generated ID
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: ESRI generated field
Attribute:
Attribute Label: COUNTY
Attribute Definition: Name of specific county
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Specific county name
Attribute:
Attribute Label: FID
Attribute Definition: Internal feature number.
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute Label: FIPSSTCO
Attribute Definition: 2000 State County FIPS code
Attribute Definition Source: U.S. Census Bureau
Attribute Domain Values:
Codeset Domain:
Codeset Name: FIPSSTCO
Codeset Source: U.S. Census Bureau
Attribute:
Attribute Label: PERIMETER
Attribute Definition: Block Group perimeter in feet
Attribute Definition Source: ESRI
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 72.20094
Range Domain Maximum: 783317.6
Attribute Units of Measure: survey ft
Attribute:
Attribute Label: Shape
Attribute Definition: Feature geometry.
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: Coordinates defining the features.
Attribute:
Attribute Label: STFID
Attribute Definition: Unique Block Group identifier (FIPS code identifier)
Attribute Definition Source: U.S. Census Bureau
Attribute Domain Values:
Codeset Domain:
Codeset Name: STFID
Codeset Source: U.S. Census Bureau
Attribute:
Attribute Label: TRACT
Attribute Definition: 2000 Census Tract code
Attribute Definition Source: U.S. Census Bureau
Attribute Domain Values:
Codeset Domain:
Codeset Name: TRACT
Codeset Source: U.S. Census Bureau
Attribute:
Attribute Label: TRACTID
Attribute Definition: 2000 Census Tract code
Attribute Definition Source: U.S. Census Bureau
Attribute Domain Values:
Codeset Domain:
Codeset Name: TRACTID
Codeset Source: U.S. Census Bureau
Distribution Information
Section Index
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: NJDEP/OIRM/BGIA
Contact Address:
Address Type: mailing and physical address
Address: 401 East State Street, First Floor, PO Box 428
City: Trenton
State or Province: New Jersey
Postal Code: 08625-0428
Country: USA
Contact Voice Telephone: 609-984-2243
Contact Facsimile Telephone: 609-292-7900
Contact Instructions: Call 609-984-2243 with questions concerning only the acquisition/download of this data set. Call the metadata reference contact with questions concerning the data.
Resource Description: Census 2000 Block Groups
Distribution Liability: See "Use Constraints"
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: AVSHP
Format Version Number: 8.1.2
File Decompression Technique: WinZip
Transfer Size: 4.41
Digital Transfer Option:
Online Option:
Computer Contact Information:
Fees: None
Ordering Instructions: None
Metadata Reference Information
Section Index
Metadata Date: 8/1/2002
Metadata Review Date:
Metadata Future Review Date:
Metadata Contact:
Contact Information:
Contact Person Primary:
Contact Person: Craig Coutros
Contact Organization: NJ Dept. of Environmental Protection, Bureau of Geographic Information and Analysis
Contact Position: GIS Specialist
Contact Address:
Address Type: mailing and physical address
Address: 401 East State Street, First Floor, PO Box 428
City: Trenton
State or Province: New Jersey
Postal Code: 08625-0428
Country: USA
Contact Voice Telephone: 609-292-0899
Contact Facsimile Telephone: 609-292-7900
Contact Electronic Mail Address: Craig.Coutros@dep.state.nj.us
Hours of Service: 8-4
Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
SMMSMetadata report generated 2002/09/20