The District of Columbia

Voting Precincts - 1990 (VotePre90Ply)

Voting Precincts - 1990 (VotePre90Ply)

by Board of Elections and Ethics on 06/10/2002

Keywords
About: Electoral Districts, Voting Districts, Board Of Elections And Ethics, Voting Precincts, society, Precincts, boundaries, Political, Elections
Taking place at: Washington, D.C., District of Columbia, DC, DC GIS, DCGIS

Abstract

1990 Voting Precincts. The dataset contains polygons representing boundaries of District of Columbia voting precincts, established in 1992 (based on the Wards redistricted due to the 1990 Census) by the Board of Elections and Ethics. This data was created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies.

Precincts were identified from public records (DC Board of Elections and Ethics) and intially created selecting street arcs from the WGIS planimetric Street centerlines and, where necessary, heads-up digitized from the 1995 orthophotographs.

All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.

METADATA CONTENT IS IN PROCESS OF VALIDATION AND SUBJECT TO CHANGE.

Purpose

This data is used for the planning and management of Washington, D.C. by local government agencies.

Access constraints

Contact OCTO GIS. Any data obtained outside of OCTO GIS are unauthorized copies.

Use constraints

Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.

Point of contact

GIS Data Coordinator
in D.C. Office of the Chief Technology Officer

441 4th St NW, Suite 930 South
Washington DC, 20001, USA

fax: (202) 727-5660
hours: 8:30 am - 5:00 pm

Credits

DC Board of Elections and Ethics

Data accuracy

Accuracy
Data believed to be complete and accurate as of the time period cited. Subject to change. Digital version compared with original source data for accuracy and completeness. In process of validation by source and/or responsible agency.

Logical consistency
In process of validation by source and/or responsible agency.

Completeness
Data believed to be complete and accurate, subject to change. Digital version compared with original source data for accuracy and completeness. In process of validation by source and/or responsible agency.

Horizontal positional accuracy
In process of validation by source and/or responsible agency.

Vertical positional accuracy
N/A

Lineage / Sources

  • 1992 Ward, ANC, SMD, Voting Precinct map
    paper, boundaries
    1992 Ward, ANC, SMD, Voting Precinct map
    by D.C. Board of Elections and Ethics, 1992
Lineage / Processes
GIS Data Coordinator
in D.C. Office of the Chief Technology Officer



fax: (202) 727-5660
hours: 8:30 am - 5:00 pm
Precincts were identified from public records (D.C. Board of Elections and Ethics) and initially created selecting street arcs from the WGIS planimetric street centerlines and, where necessary, heads-up digitized from the 1995 orthophotographs. A base ArcInfo coverage of correct line work (snapbase.e00) for all DC data was developed after the final delivery of the planimetric street centerlines. The precinct datasets were selected from the snapbase coverage, creating coincident geography with the other DC GIS datasets. When imported into the DC GIS geodatabase the coverages shift 0.01mm since the geodatabase supports only 11 digits of precision, not double precision (16 digits). Line coverages, containing the polygons bounding attributes, accompany all polygons and are made available for editing and updating purposes.

Planimetrics were created at a scale of 1:1,000. This means that a well defined feature falls within two feet of true position.

All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.

Distribution

Most DC GIS datasets can be downloaded from "http://dcgis.dc.gov" on the data center page. Orders can also be made by contacting OCTO GIS at "dcgis@dc.gov", especially for datasets not available for download.

Distribution liability
Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.

Distributed by
GIS Data Coordinator
in D.C. Office of the Chief Technology Officer

441 4th St NW, Suite 930 South
Washington DC, 20001,

fax: (202) 727-5660
hours: 8:30 am - 5:00 pm

Entity

DCGIS.VotePre90Ply

Attributes

  • Shape / ESRI
    Feature geometry.
  • OBJECTID
    unique id
  • GIS_ID
    OCTO GIS sequential identifier
  • WEB_URL
    Voting precinct web link url
  • SORTFIELD
    sort field
  • VP_ID
    Voting precinct id
  • NAME
    Voting precinct name
  • SHAPE / ESRI
    Feature geometry.
  • SHAPE.AREA
  • SHAPE.LEN

Metadata

FGDC Content Standards for Digital Geospatial Metadata / FGDC-STD-001-1998 as of 08/13/2007

Provided by
GIS Data Coordinator
in D.C. Office of the Chief Technology Officer

441 4th St NW, Suite 930 South
Washington DC, 20001, USA

fax: (202) 727-5660
hours: 8:30 am - 5:00 pm