Census 2000 Block Groups

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   County, King, 20050316, Census 2000 Block Groups: King County, King County, WA.

   Online Links:

   • Service=sde:sqlserver:gisprod; Database=maint; User=gisc; Version=sde.DEFAULT

   Other_Citation_Details: None

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -122.555183

   East_Bounding_Coordinate: -121.061524

   North_Bounding_Coordinate: 47.789237

   South_Bounding_Coordinate: 47.073333

3. What does it look like?

   <http://www5.kingcounty.gov/sdc/dataimages/blkgrp00.jpg> (JPG)

   JPG File of layer overlain on base of WA counties or local cities

4. Does the data set describe conditions during a particular time period?

   Currentness_Reference: publication date

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: vector digital data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (1580)

   2. What coordinate system is used to represent geographic features?

      The map projection used is Lambert Conformal Conic.

      Projection parameters:

      Standard_Parallel: 47.500000

      Standard_Parallel: 48.733333

      Longitude_of_Central_Meridian: -120.833333

      Latitude_of_Projection_Origin: 47.000000

      False_Easting: 1640416.666667

      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.001000
      Ordinates (y-coordinates) are specified to the nearest 0.001000
      Planar coordinates are specified in survey feet

      The horizontal datum used is D_North_American_1983_HARN.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.
      

      Vertical_Coordinate_System_Definition:

      Altitude_System_Definition:

      Altitude_Encoding_Method:

      Explicit elevation coordinate included with horizontal coordinates

      Altitude_Resolution: 1.000000

7. How does the data set describe geographic features?

   blkgrp00

   Polygon feature attribute table (Source: ESRI)

   HOUSEUNITS

   Range of values
   Minimum:	0
   Maximum:	2236
   Resolution:	1

   OBJECTID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   GTFID

   LOGRECNO

   TOTAL_POP

   Range of values
   Minimum:	19
   Maximum:	5575
   Resolution:	1

   HOUSEHOLDS

   Range of values
   Minimum:	0
   Maximum:	2134
   Resolution:	1

   SHAPE

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   SHAPE.area

   SHAPE.len

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • King County

2. Who also contributed to the data set?

3. To whom should users address questions about the data?
   Mike Leathers
   King County GIS Center
   GIS Data Coordinator
   201 S Jackson St, Suite 700
   Seattle, WA 98104
   USA
   

   206-263-4867 (voice)
   

Why was the data set created?

Census 2000 Block Group polygons for use with summary level 150 tabular data

How was the data set created?

1. From what previous works were the data drawn?

2. How were the data generated, processed, and modified?

   (process 1 of 2)

   (process 2 of 2)

   Metadata imported.

   Data sources used in this process:

   • Z:\Intranet\SoftMigr\XMLDocs\blkgrp00.xml

3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?

2. How accurate are the geographic locations?

3. How accurate are the heights or depths?

4. Where are the gaps in the data? What is missing?

5. How consistent are the relationships among the observations, including topology?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None

Use_Constraints:

King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County.

1. Who distributes the data set? (Distributor 1 of 1)
   Cheryl Wilder
   KCGIS Center
   Data Sales Coordinator
   201 S Jackson St, Suite 700
   Seattle, WA 98104
   USA
   

   206-263-5220 (voice)
   

2. What's the catalog number I need to order this data set?

   /plibrary2/census/shapes/polygon/blkgrp00.shp

3. What legal disclaimers am I supposed to read?

   King County disclaims any warranty of use of any digital product or data beyond that for which it was designed.

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	ESRI Shapefile Size: 11.145
     Network links:	\\gisdw\kclib\plibrary2\census\shapes\polygon\blkgrp00.shp
     Media you can order:	Yes (format CD or DVD Read-only media, if offline)

   • Cost to order the data:

     Contact KCGIS Client Services for the cost of reproduction - <http://www.kingcounty.gov/operations/GIS/GISData/GISDataDistribution.aspx>

Who wrote the metadata?

Dates:

Last modified: 06-May-2006

Metadata author:

King County GIS Center
c/o Mike Leathers
GIS Data Coordinator
201 S Jackson St, Suite 700
Seattle, WA 98104
USA

206-263-4867 (voice)
firstname.lastname@kingcounty.gov

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>