Census Block Level Housing Change 1990 - 2010 for the Conterminous United States

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

David P. Helmers, SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison, GIS Specialist

Title:

Census Block Level Housing Change 1990 - 2010 for the Conterminous United States

Geospatial_Data_Presentation_Form: vector digital data

Description:

Abstract:

Using geographic information systems (GIS), we mapped housing and population counts from the 1990, 2000, and 2010 decennial U.S. Census Data at block group level geography to produce spatially explicit datasets for the conterminous U.S..Then using (1) 1990-2000 and (2) 2000-2010 Census Bureau relationship tables, we allocated 1990 and 2000 housing and population units to 2010 census blocks based on the type of spatial relationship between blocks: (a) 1-to-1, (b) 1-to-many, (c) many-to-1, (d) many-to-many. The end result is 2010 census blocks (polygons) with housing and population units allocated from 1990 and 2000.Lastly, we overlaid the housing change data with the Protected Areas Dataset (PAD version 2.1) to split census block groups into privately and publicly owned sub-blocks, thereby creating a map that more accurately locates where people and houses exist in space. This data is useful within a GIS for mapping and analysis at national, state, and local levels.

Purpose:

To provide a spatially detailed national assessment of housing density and housing change across the coterminous U.S. for 1990, 2000, and 2010 to support research, policy and management, and inquiries into the effects of housing growth on the environment.

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -127.977107

East_Bounding_Coordinate: -65.254885

North_Bounding_Coordinate: 51.649519

South_Bounding_Coordinate: 22.768690

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Census

Theme_Keyword: sprawl

Theme_Keyword: Public Land Adjusted

Theme_Keyword: Housing

Theme_Keyword: United States

Theme_Keyword: Housing Density

Theme_Keyword: Conterminous United States

Theme_Keyword: Housing Growth

Theme_Keyword: Block

Theme_Keyword: Population

Theme_Keyword: Housing Change

Access_Constraints: None

Use_Constraints:

None. Acknowledgment of the USDA Forest Service Northern Research Station in products, presentations, and publications utilizing these data would be appreciated.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USDA Forest Service

Contact_Person: Miranda H. Mockrin

Contact_Position: Research Scientist

Contact_Address:

Address_Type: mailing

Address: 5523 Research Park Drive Suite 350

City: Baltimore

State_or_Province: MD

Postal_Code: 21228-4783

Country: US

Contact_Voice_Telephone: 443-543-5389

Contact_Electronic_Mail_Address: mhmockrin@fs.fed.us

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison

Contact_Person: Volker C. Radeloff

Contact_Position: Associate Professor

Contact_Address:

Address_Type: mailing

Address: 1630 Linden Drive

City: Madison

State_or_Province: WI

Postal_Code: 53706

Country: US

Contact_Voice_Telephone: 608-263-4349

Contact_Electronic_Mail_Address: radeloff@wisc.edu

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison

Contact_Person: David P. Helmers

Contact_Position: GIS Specialist

Contact_Address:

Address_Type: mailing

Address: 1630 Linden Drive

City: Madison

State_or_Province: WI

Postal_Code: 53706

Country: US

Contact_Voice_Telephone: 608-890-3160

Contact_Electronic_Mail_Address: helmers@wisc.edu

Native_Data_Set_Environment:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.0.4322

Data_Quality_Information:

Logical_Consistency_Report:

Topology maintained by ArcGIS 10.3. All fuzzy tolerances during processing were set to 0.00000001 to prevent data loss.

Completeness_Report:

Data is for the conterminous United States only (lower 48 states and Disrict of Columbia). No data was generated for Alaska, Hawaii, and U.S. territories.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Title: PAD-US (CBI Edition) Version 2, October 2012

Online_Linkage:

https://databasin.org/galleries/b84ac5ccebd24658bc3cfe4dfaa6c629

Type_of_Source_Media: onLine

Source_Citation_Abbreviation: PAD-US (CBI Edition) Version 2, October 2012

Source_Contribution:

PAD-US (CBI Edition) Version 2 is a comprehensive geospatial data set of United States protected areas, including detailed information on land ownership, management and conservation status.

Source_Information:

Source_Citation:

Citation_Information:

Title: U.S. TIGER/Line 1990, 2000, 2010 block shapefiles

Online_Linkage: https://www.census.gov/geo/maps-data/data/tiger-line.html

Type_of_Source_Media: None

Source_Citation_Abbreviation: U.S. TIGER/Line 1990, 2000, 2010 block shapefiles

Source_Contribution:

U.S. Census TIGER/Line 1990, 2000, and 2010 block polygons. Housing and population densities obtained from Summary File 1.

Source_Information:

Source_Citation:

Citation_Information:

Title: 2000 and 2010 Block Relationship Files

Online_Linkage: https://www.census.gov/geo/maps-data/data/relationship.html

Type_of_Source_Media: None

Source_Citation_Abbreviation: 2000 and 2010 Block Relationship Files

Source_Contribution:

U.S. Census Bureau 2000 Block Relationship Files and 2010 Block Relationship Files (Geographic Relationships Over Time).

Process_Step:

Process_Description:

1) Download block relationship tables from U.S. Census website (1990-2000 and 2000-2010)

Process_Step:

Process_Description:

2) Join housing units for each decade to the relationship tables

Process_Step:

Process_Description:

3) Allocate 1990 housing to 2000 blocks using adjusted relationship tables (see algorithm)

Process_Step:

Process_Description:

4) Allocate 2000 housing to 2010 blocks using adjusted relationship tables (see algorithm)

Process_Step:

Process_Description:

5) Build 1990 to 2010 adjusted relationship table using allocated 1990 values for 2000 blocks

Process_Step:

Process_Description:

6) Allocate 1990 housing to 2010 blocks using adjusted census relationship tables (see algorithm)

Process_Step:

Process_Description:

ALLOCATION ALGORITHM 1) Iteratively classify table records as 1-to-1, 1-to-Many, and Many-to-1 relationships: a. Iteration #1 = Process all records and remove successful matches b. Iteration #2 = Remove records that try to allocate units to water and vacant blocks, process remaining records and remove successful matches c. Iteration #3 = Remove records with less than 1% area intersection, process remaining records and remove successful matches 2) Classify remaining records as Many-to-Many relationship and then identify Least Common Denominator (LCD) polygons for each record 3) Calculate unit allocation factor for each record based on relationship type a. 1-to-1 = direct (units) b. 1-to-Many = proportional (units / # of blocks) c. Many-to-1 = direct (sum(units)) d. Many-to-Many = dasymetric allocation

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 11858735

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD 1983 Albers

Albers_Conical_Equal_Area:

Standard_Parallel: 29.5

Standard_Parallel: 45.5

Longitude_of_Central_Meridian: -96.0

Latitude_of_Projection_Origin: 23.0

False_Easting: 0.0

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.0001

Ordinate_Resolution: 0.0001

Planar_Distance_Units: meter

Geodetic_Model:

Horizontal_Datum_Name: D North American 1983

Ellipsoid_Name: GRS 1980

Semi-major_Axis: 6378137.0

Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: CONUS_blk10_Census_change_1990_2010_PLA2

Attribute:

Attribute_Label: OBJECTID

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: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: BLK10

Attribute_Definition:

A unique number assigned to Census Blocks concatenated from State, County, Tract, and Block, and Water fields from US Census TIGER. The Census Bureau defines a block as the smallest geographic area for which the Bureau of the Census collects and tabulates decennial census data, [and] are formed by streets, roads, railroads, streams and other bodies of water, other visible and cultural features, and the legal boundaries shown on Census Bureau maps (US Census Bureau).

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: WATER10

Attribute_Definition: Flag if polygon is a water body (1=water)

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: POP10

Attribute_Definition: Population in 2010.

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: HU10

Attribute_Definition: Housing units in 2010

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: HHU10

Attribute_Definition: Households in 2010

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: SHU10

Attribute_Definition: Seasonal housing units in 2010

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: POPDEN10

Attribute_Definition: 2010 population density (people / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: HU90

Attribute_Definition: Housing units in 1990

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: HUDEN90

Attribute_Definition: 1990 housing density (units / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: HU00

Attribute_Definition: Housing units in 2000

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: HUDEN00

Attribute_Definition: 2000 housing density (units / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: SHU90

Attribute_Definition: Seasonal housing units in 1990

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: SHUDEN90

Attribute_Definition: 1990 seasonal housing density (units / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: SHU00

Attribute_Definition: Seasonal housing units in 2000

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: SHUDEN00

Attribute_Definition: 2000 seasonal housing density (units / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: HHU90

Attribute_Definition: Household units in 1990

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: HHUDEN90

Attribute_Definition: 1990 household density (units / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: HHU00

Attribute_Definition: Household units in 2000

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: HHUDEN00

Attribute_Definition: 2000 household density (units / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: POP90

Attribute_Definition: 1990 population

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: POPDEN90

Attribute_Definition: 1990 housing density (people / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: POP00

Attribute_Definition: Population in 2000

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: POPDEN00

Attribute_Definition: 2000 populatiom density (people / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: HUDEN10

Attribute_Definition: 2010 housing density (housing units / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: HHUDEN10

Attribute_Definition: 2010 household density (units / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: SHUDEN10

Attribute_Definition: 2010 seasonal housing density (units / square km)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: PUBFLAG

Attribute_Definition: Flag if polygon is a protected area (1=public land)

Attribute_Definition_Source: silvis

Attribute:

Attribute_Label: fips

Attribute_Definition: 5-digit county fips code

Attribute_Definition_Source: US Census Bureau

Attribute:

Attribute_Label: Shape_Length

Attribute_Definition: Length of feature in internal units.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: Shape_Area

Attribute_Definition: Area of feature in internal units squared.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Overview_Description:

Entity_and_Attribute_Overview:

Spatial objects (features) can be thought of as uniform areas of housing density.

Metadata_Reference_Information:

Metadata_Date: 20180130

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison

Contact_Person: David P. Helmers

Contact_Position: GIS Specialist

Contact_Address:

Address_Type: mailing

Address: 1630 Linden Drive

City: Madison

State_or_Province: WI

Postal_Code: 53706

Country: US

Contact_Voice_Telephone: 608-890-3160

Contact_Electronic_Mail_Address: helmers@wisc.edu

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Use_Constraints:

No warranty, expressed or implied, is made by the U.S. Forest Service or the University of Wisconsin-Madison regarding the use of these data, nor does the act of distribution constitute any such warranty.