20230331
11165300
1.0
FALSE
WUI
895780.058996
1234025.886112
9967041.928873
10195727.768088
1
002
Projected
GCS_North_American_1983
Linear Unit: Foot_US (0.304801)
NAD_1983_StatePlane_Utah_South_FIPS_4303_Feet
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20251209
17025600
20251209
17025600
FGDC
David P. Helmers
SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison
GIS Specialist
608-890-3160
1630 Linden Dr.
Madison
WI
53706
US
helmers@wisc.edu
20251209
ArcGIS Metadata
1.0
USDA Forest Service, Research and Development
Research Data Archivist
see Contact Instructions
240 West Prospect Road
Fort Collins
CO
80526
US
This contact information was current as of September 2022. For current information see Contact Us page on: https://doi.org/10.2737/RDS.
None
GDB
see Format Specification
ArcGIS geodatabase
Files zipped with 7-Zip 19.0
https://doi.org/10.2737/RDS-2015-0012-3
RDS-2015-0012-3
https://doi.org/10.2737/RDS-2015-0012-3
Feature Class
WUI
2022-01-01
3rd
Martinuzzi, Sebastián
Carlson, Amanda R.
Radeloff, Volker C.
Forest Service Research Data Archive
Fort Collins, CO
Hawbaker, Todd J.
Helmers, David P.
Mockrin, Miranda H.
vector digital data
The Wildland-Urban Interface (WUI) is the area where houses meet or intermingle with undeveloped wildland vegetation. This makes the WUI a focal area for human-environment conflicts such as wildland fires, habitat fragmentation, invasive species, and biodiversity decline. Using geographic information systems (GIS), we integrated U.S. Census and USGS National Land Cover Data, to map the Federal Register definition of WUI (Federal Register 66:751, 2001) for the conterminous United States from 1990-2020. These data are useful within a GIS for mapping and analysis at national, state, and local levels. Data are available as a geodatabase and include information such as housing densities for 1990, 2000, 2010, and 2020; wildland vegetation percentages for 1992, 2001, 2011, and 2019; as well as WUI classes in 1990, 2000, 2010, and 2020.
To provide a spatially detailed national assessment of the Wildland Urban Interface (WUI) and WUI change between 1990 and 2020 across the coterminous U.S. to support wildland fire research, policy and management, and inquiries into the effects of housing growth on the environment.
Financial support was provided by the USDA Forest Service under the National Fire Plan. Funding also provided by USDA Forest Service, Northern Research Station. Data obtained from the U.S. Census and USGS National Land Cover Data, see source citations noted below for more details. Author Information: Volker C. Radeloff SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison David P. Helmers SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison Miranda H. Mockrin USDA Forest Service, Northern Research Station Amanda R. Carlson SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison Todd J. Hawbaker U.S. Geological Survey, Geosciences and Environmental Change Science Center, Denver, Colorado, USA Sebastián Martinuzzi SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison
David P. Helmers
SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison
GIS Specialist
608-890-3160
1630 Linden Dr.
Madison
WI
53706
US
helmers@wisc.edu
Miranda H. Mockrin
USDA Forest Service, Northern Research Station
Research Scientist
443-543-5389
5523 Research Park Drive Suite 350
Baltimore
MD
21228-4783
US
miranda.h.mockrin@usda.gov
Volker C. Radeloff
SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison
Professor
608-263-4349
1630 Linden Dr.
Madison
WI
53706
US
radeloff@wisc.edu
conterminous United States
United States
environment
ISO 19115 Topic Category
Fire
Wildland/urban interface
Environment and People
National Research & Development Taxonomy
wildland fire
WUI
sprawl
housing growth
fragmentation
wildland-urban interface
wildland fire
WUI
sprawl
housing growth
Fire
Wildland/urban interface
conterminous United States
United States
fragmentation
wildland-urban interface
Environment and People
environment
Metadata documents have been reviewed for accuracy and completeness. Unless otherwise stated, all data and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. However, neither the author, the Archive, nor any part of the federal government can assure the reliability or suitability of these data for a particular purpose. The act of distribution shall not constitute any such warranty, and no responsibility is assumed for a user's application of these data or related materials. The metadata, data, or related materials may be updated without notification. If a user believes errors are present in the metadata, data or related materials, please use the information in (1) Identification Information: Point of Contact, (2) Metadata Reference: Metadata Contact, or (3) Distribution Information: Distributor to notify the author or the Archive of the issues.
These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation: Radeloff, Volker C.; Helmers, David P.; Mockrin, Miranda H.; Carlson, Amanda R.; Hawbaker, Todd J.; Martinuzzi, Sebastián. 2022. The 1990-2020 wildland-urban interface of the conterminous United States - geospatial data. 3rd Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2015-0012-3
The 2010 wildland-urban interface of the conterminous United States - geospatial data
2015-01-01
Radeloff, Volker C.
Forest Service Research Data Archive
Fort Collins, CO
Martinuzzi, Sebastián
Mockrin, Miranda H.
Stewart, Susan I.
Helmers, David P.
Hammer, Roger B.
vector digital data
https://doi.org/10.2737/RDS-2015-0012
The 1990-2010 wildland-urban interface of the conterminous United States - geospatial data
2017-01-01
2nd
Kramer, H. Anu
Bar Massada, Avi
Syphard, Alexandra D.
Bustic, Van
Forest Service Research Data Archive
Fort Collins, CO
Helmers, David P.
Stewart, Susan I.
Radeloff, Volker C.
Hawbaker, Todd J.
Martinuzzi, Sebastián
Mockrin, Miranda H.
Alexandre, Patricia M.
vector digital data
https://doi.org/10.2737/RDS-2015-0012-2
The 2010 wildland-urban interface of the conterminous United States
2015-01-01
Radeloff, Volker C.
Hammer, Roger B.
Martinuzzi, Sebastián
Helmers, David P.
U.S. Department of Agriculture, Forest Service, Northern Research Station
Newtown Square, PA
Mockrin, Miranda H.
Stewart, Susan I.
document
Research Map
NRS-8
124 p. [includes pull-out map]
https://doi.org/10.2737/nrs-rmap-8
Rapid growth of the US wildland-urban interface raises wildfire risk
2018-01-01
Bar Massada, Avi
Hawbaker, Todd J.
Radeloff, Volker C.
Helmers, David P.
Kramer, H. Anu
Mockrin, Miranda H.
Martinuzzi, Sebastián
Alexandre, Patricia M.
Butsic, Van
Syphard, Alexandra D.
Stewart, Susan I.
journal article
Proceedings of the National Academy of Sciences
115(3): 3314-3319
https://www.fs.usda.gov/treesearch/pubs/55817
https://doi.org/10.1073/pnas.1718850115
The wildland-urban interface in the United States
2005-01-01
Holcomb, S.S.
Radeloff, Volker C.
McKeefry, J.F.
Fried, J.S.
Hammer, Roger B.
Stewart, Susan I.
journal article
Ecological Applications
15(3):799-805
https://www.fs.usda.gov/treesearch/pubs/14912
https://doi.org/10.1890/04-1413
Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388
Ground condition
1990-01-01
2020-01-01
-127.977107
-65.254885
22.76869
51.649519
This data publication, published on 09/08/2022 is a third edition. The first edition (https://doi.org/10.2737/RDS-2015-0012) contained data representing the 2010 WUI of the conterminous United States. The second edition (https://doi.org/10.2737/RDS-2015-0012-2) contained data that represented the 1990-2010 WUI. This third edition contains data that represent the 1990-2020 WUI. On 12/30/2022 the descriptions for WUICLASS2020 were updated. Information about WUI can also be found here: http://silvis.forest.wisc.edu/data/wui-change as well as https://www.nrs.fs.fed.us/data/wui/.
1
-114.070912
-112.891592
37.628386
36.980823
Topology maintained by ArcGIS 10.3. All fuzzy tolerances during processing were set to 0.00000001 to prevent data loss.
Data are for the conterminous United States only (lower 48 states and Disrict of Columbia). No data were generated for Alaska, Hawaii, and U.S. territories.
We verified that WUI classes were classified correctly based on experience (visual assessment of maps) and also verified that all WUI classes meet the correct combination of housing density and land cover.
Step 1: Created nationwide map of "protected areas with no housing units", pulled from the PAD-US (CBI Edition) version 2.1, including all federal, state, regional, and local government owned lands. Intersected these protected areas with U.S. block level housing change 1990-2020 dataset and moved housing units out of protected areas into neighboring privately owned blocks with the same block ID (called public land adjustment or PLA). If the same block ID had no private areas then houses remained within the protected lands boundary (no adjustment).
2022-05-16
Step 4: Selected all block housing polygons with >= 75% wildland vegetation in 2020 and dissolved into larger contiguous areas. Buffered areas > 500 hectares by 2,414 m (1.5 miles) to identify potential interface WUI areas. Unioned 2020 buffers with integrated block housing polygons and assigned Interface WUI classes to all polygons falling inside vegetation buffers and minimum 6.177635 housing units / square km (ignoring pre-existing Intermix WUI areas) for all 4 decades 1990, 2000, 2010, 2020.
2022-05-16
Step 2: Integrated U.S. block level housing change 1990-2020 dataset (public land adjusted) with the 2019 National Land Cover Dataset NLCD (years 2001, 2011, and 2019), and the 1992/2001 Retrofit Change Product (1992 values only) using ArcGIS Tabulate Area command. Calculated wildland vegetation % for 4 decades (1990, 2000, 2010, 2020), with wildland vegetation defined as sum of relative percentages of land cover classes for forests, grasslands, and wetlands.
2022-05-16
Step 3: Assigned 1990 Intermix WUI classes to all polygons with > 50% wildland vegetation in 1990 and minimum 6.177635 housing units / square km in 1990. Assigned 2000 Intermix WUI classes to all polygons with > 50% wildland vegetation in 2000 and minimum 6.177635 housing units / square km in 2000. Assigned 2010 Intermix WUI classes to all polygons with > 50% wildland vegetation in 2010 and minimum 6.177635 housing units / square kilometers (square km) in 2010. Assigned 2020 Intermix WUI classes to all polygons with > 50% wildland vegetation in 2020 and minimum 6.177635 housing units / square km in 2020.
2022-05-16
PAD-US (CBI Edition) Version 2.1 is a comprehensive geospatial data set of United States protected areas, including detailed information on land ownership, management and conservation status.
Protected Areas Database of the US, PAD-US (CBI Edition)
PAD-US (CBI Edition) Version 2.1, September 2016
2016-09-01
2.1
Conservation Biology Institute
Corvallis, OR
Conservation Biology Institute
Database
https://consbio.org/products/projects/pad-us-cbi-edition
Publication Date
2016-09-01
Multi-Resolution Land Characteristics Consortium (MRLC) National Land Cover Dataset (NLCD) 1992/2001 Retrofit Land Cover Change Product. Provided landcover information for identifying forest, grassland, and wetland areas (wildland vegetation) for 1990 WUI classification.
Completion of the National Land Cover Database (NLCD) 1992/2001 Land Cover Change Retrofit product
NLCD Retrofit 1992
2009-01-01
Wickham, James D.
Homer, Collin G.
Coan, Michael
Meyer, D.K.
Fry, Joyce
document
U.S. Geological Survey Open-File Report
2008-1379
18 p.
Ground Condition
1992-01-01
Multi-Resolution Land Characteristics Consortium (MRLC) National Land Cover Dataset (NLCD) 2019. NLCD Land Cover (CONUS) All Years. Product provided landcover information for identifying forest, grassland, and wetland areas (wildland vegetation) for 2010, 2011, 2019 WUI classification. https://www.mrlc.gov/data/nlcd-land-cover-conus-all-years
National Land Cover Database (NLCD) 2019 products
NLCD 2019
2021-06-01
2.0
U.S. Geological Survey
Dewitz, Jon A.
U.S. Geological Survey
raster digital data
https://doi.org/10.5066/P9KZCM54
Ground Condition
2019-01-01
U.S. Census TIGER 2020 block polygons with associated 2020, 2010, 2000, and 1990 housing density. 2020 Census Block housing densities obtained from Summary File 1 and 1990, 2000, 2010 housing densities allocated from Census Bureau 1990-2000, 2000-2010, and 2010-2020 Block Relationship Files.
Census block level housing change 1990-2010 for the Conterminous United States
U.S. Block Housing Change 1990-2020
2018-01-30
David P. Helmers, SILVIS Lab, Dept of Forest & Wildlife Ecology, University of Wisconsin-Madison
vector digital data
Dataset created by SILVIS Lab by allocating 1990, 2000, and 2010 housing units to 2020 TIGER block geography using Block Relationship Files. See metadata for the U.S. Block Housing Change 1990-2010 dataset on the SILVIS website for more details.
http://silvis.forest.wisc.edu/data/housing-block-change/
Publication Date
2000-01-01
2010-01-01
1990-01-01
4605
WUI
WUI of the Conterminous United States 1990-2020
Feature Class
4605
OCCHU2020
2020 occupied housing units
U.S. Census Bureau PL 94-171 Redistricting Data summary file. Note: 2020 decennial Census data use differential privacy, a technique that introduces errors into data to preserve respondent confidentiality. Small counts/census block data should be interpreted with caution. See https://www.census.gov/programs-surveys/decennial-census/decade/2020/planning-management/process/disclosure-avoidance.html for more information.
OCCHU2020
Integer
4
10
0
STATEABREV
2 letter state abbreviation
SILVIS Lab
STATEABREV
String
2
0
0
BUFVEG
flag (1=inside, 0=outside) for polygons within potential interface buffers (2.14 km around dense vegetation areas >= 75% wildland vegetation and > 500 hectares in 2020)
SILVIS Lab
BUFVEG
SmallInteger
2
5
0
WUICLASS2010
2010 Wildland Urban Interface class (see enumerated domains for WUICLASS2020)
SILVIS Lab
WUICLASS2010
String
255
0
0
WUIFLAG2010
Flag designating WUI (1=intermix; 2=interface) vs. non-WUI (0) areas in 2010
SILVIS Lab
WUIFLAG2010
Integer
4
10
0
WUICLASS2000
2000 Wildland Urban Interface class (see enumerated domains for WUICLASS2020)
SILVIS Lab
WUICLASS2000
String
255
0
0
WUIFLAG2000
Flag designating WUI (1=intermix; 2=interface) vs. non-WUI (0) areas in 2000
SILVIS Lab
WUIFLAG2000
Integer
4
10
0
RASTERCODE20
Codes used to convert 2020 WUI classes (WUICLASS2000) to raster dataset.
Silvis Lab
6
Med_Dens_NoVeg/High_Dens_NoVeg
SILVIS Lab
7
Water
SILVIS Lab
5
Uninhabited_NoVeg/Very_Low_Dens_NoVeg/Low_Dens_NoVeg
SILVIS Lab
3
Very_Low_Dens_Veg
SILVIS Lab
1
Intermix
SILVIS Lab
2
Interface
SILVIS Lab
4
Uninhabited_Veg
SILVIS Lab
RASTERCODE20
Integer
4
10
0
RASTERCODE90
Codes used to convert 1990 WUI classes (WUICLASS1990) to raster dataset.
SILVIS Lab
4
Uninhabited_Veg
SILVIS Lab
3
Very_Low_Dens_Veg
SILVIS Lab
1
Intermix
SILVIS Lab
5
Uninhabited_NoVeg/Very_Low_Dens_NoVeg/Low_Dens_NoVeg
SILVIS Lab
6
Med_Dens_NoVeg/High_Dens_NoVeg
SILVIS Lab
7
Water
SILVIS Lab
2
Interface
SILVIS Lab
RASTERCODE90
Integer
4
10
0
HU2010
2010 total housing units (allocated)
SILVIS Lab, U.S. Census Bureau
HU2010
Integer
4
10
0
HUDEN2000
2000 total housing density (units / square km)
SILVIS Lab, U.S. Census Bureau
HUDEN2000
Double
8
38
8
WUIFLAG1990
Flag designating WUI (1=intermix; 2=interface) vs. non-WUI (0) areas in 1990
SILVIS Lab
WUIFLAG1990
Integer
4
10
0
VEG2011PC
Wildland Vegetation % in 2011 where wildland vegetation = (forests + grasslands + wetlands)
SILVIS Lab
VEG2011PC
Double
8
38
8
VEG2001PC
Wildland Vegetation % in 2001 where wildland vegetation = (forests + grasslands + wetlands)
SILVIS Lab
VEG2001PC
Double
8
38
8
OCCHUDEN2020
2020 occupied housing density (units / square km)
U.S. Census Bureau PL 94-171 Redistricting Data summary file. Note: 2020 decennial Census data use differential privacy, a technique that introduces errors into data to preserve respondent confidentiality. Small counts/census block data should be interpreted with caution. See https://www.census.gov/programs-surveys/decennial-census/decade/2020/planning-management/process/disclosure-avoidance.html for more information.
OCCHUDEN2020
Double
8
38
8
HUDEN2020
2020 total housing density (units / square km)
U.S. Census Bureau PL 94-171 Redistricting Data summary file. Note: 2020 housing units at the census block level are preserved as reported without any statistical noise infusion. See https://www.census.gov/programs-surveys/decennial-census/decade/2020/planning-management/process/disclosure-avoidance.html for more information.
HUDEN2020
Double
8
38
8
POPDEN2020
2020 population density (persons / square km)
U.S. Census Bureau PL 94-171 Redistricting Data summary file. Note: 2020 decennial Census data use differential privacy, a technique that introduces errors into data to preserve respondent confidentiality. Small counts/census block data should be interpreted with caution. See https://www.census.gov/programs-surveys/decennial-census/decade/2020/planning-management/process/disclosure-avoidance.html for more information.
POPDEN2020
Double
8
38
8
WATER20
Flag if polygon is a water body using 2020 TIGER water bodies (1=water)
U.S. Census Bureau
WATER20
SmallInteger
2
5
0
Shape
Feature geometry.
Esri
Coordinates defining the features.
Shape
Geometry
4
0
0
AWATER20PC
% of block area that is water
U.S. Census Bureau
AWATER20PC
Double
8
38
8
HU2020
2020 total housing units
U.S. Census Bureau PL 94-171 Redistricting Data summary file. Note: 2020 housing units at the census block level are preserved as reported without any statistical noise infusion. See https://www.census.gov/programs-surveys/decennial-census/decade/2020/planning-management/process/disclosure-avoidance.html for more information.
HU2020
Integer
4
10
0
POP2020
2020 population
U.S. Census Bureau PL 94-171 Redistricting Data summary file. Note: 2020 decennial Census data use differential privacy, a technique that introduces errors into data to preserve respondent confidentiality. Small counts/census block data should be interpreted with caution. See https://www.census.gov/programs-surveys/decennial-census/decade/2020/planning-management/process/disclosure-avoidance.html for more information.
POP2020
Integer
4
10
0
VEG1992PC
Wildland Vegetation % in 1992 where wildland vegetation = (forests + grasslands + wetlands)
SILVIS Lab
VEG1992PC
Double
8
38
8
WUICLASS2020
2010 Wildland Urban Interface class (see enumerated domains)
SILVIS Lab
Very_Low_Dens_Veg
housing density < 6.177635 and wildland vegetation > 50%
SILVIS Lab
High_Dens_Interface
housing density >= 741.3162 and wildland vegetation <= 50% and within 2.414 km of area with >= 75% wildland vegetation
SILVIS Lab
High_Dens_Intermix
housing density >= 741.3162 and wildland vegetation > 50%
SILVIS Lab
Low_Dens_Interface
housing density between 6.177635 and 49.42108 and wildland vegetation <= 50% and within 2.414 km of area with >= 75% wildland vegetation
SILVIS Lab
Med_Dens_Intermix
housing density between 49.42108 and 741.3162 and wildland vegetation > 50%
SILVIS Lab
Water
open water
SILVIS Lab
Very_Low_Dens_NoVeg
housing density < 6.177635 and wildland vegetation <= 50%
SILVIS Lab
Uninhabited_Veg
housing density = 0 and wildland vegetation > 50%
SILVIS Lab
High_Dens_NoVeg
housing density >= 741.3162 and wildland vegetation <= 50%
SILVIS Lab
Med_Dens_NoVeg
housing density between 49.42108 and 741.3162 and wildland vegetation <= 50%
SILVIS Lab
Low_Dens_NoVeg
housing density between 6.177635 and 49.42108 and wildland vegetation <= 50%
SILVIS Lab
Low_Dens_Intermix
housing density between 6.177635 and 49.42108 and wildland vegetation > 50%
SILVIS Lab
Uninhabited_NoVeg
housing density = 0 and wildland vegetation <= 50%
SILVIS Lab
Med_Dens_Interface
housing density between 49.42108 and 741.3162 and wildland vegetation <= 50% and within 2.414 km of area with >= 75% wildland vegetation
SILVIS Lab
WUICLASS2020
String
255
0
0
VACHU2020
2020 vacant housing units
U.S. Census Bureau PL 94-171 Redistricting Data summary file. Note: 2020 decennial Census data use differential privacy, a technique that introduces errors into data to preserve respondent confidentiality. Small counts/census block data should be interpreted with caution. See https://www.census.gov/programs-surveys/decennial-census/decade/2020/planning-management/process/disclosure-avoidance.html for more information.
VACHU2020
Integer
4
10
0
VEG2019PC
Wildland Vegetation % in 2019 where wildland vegetation = (forests + grasslands + wetlands)
SILVIS Lab
VEG2019PC
Double
8
38
8
WUICLASS1990
1990 Wildland Urban Interface class (see enumerated domains for WUICLASS2020)
SILVIS Lab
WUICLASS1990
String
255
0
0
RASTERCODE00
Codes used to convert 2000 WUI classes (WUICLASS2000) to raster dataset.
Silvis Lab
6
Med_Dens_NoVeg/High_Dens_NoVeg
SILVIS Lab
5
Uninhabited_NoVeg/Very_Low_Dens_NoVeg/Low_Dens_NoVeg
SILVIS Lab
2
Interface
SILVIS Lab
3
Very_Low_Dens_Veg
SILVIS Lab
7
Water
SILVIS Lab
4
Uninhabited_Veg
SILVIS Lab
1
Intermix
SILVIS Lab
RASTERCODE00
Integer
4
10
0
VACHUDEN2020
2020 vacant housing density (units / square km)
U.S. Census Bureau PL 94-171 Redistricting Data summary file. Note: 2020 decennial Census data use differential privacy, a technique that introduces errors into data to preserve respondent confidentiality. Small counts/census block data should be interpreted with caution. See https://www.census.gov/programs-surveys/decennial-census/decade/2020/planning-management/process/disclosure-avoidance.html for more information.
VACHUDEN2020
Double
8
38
8
PUBFLAG
Flag if polygon is a protected area (1=public land)
SILVIS Lab
PUBFLAG
SmallInteger
2
5
0
RASTERCODE10
Codes used to convert 2010 WUI classes (WUICLASS2000) to raster dataset.
Silvis Lab
6
Med_Dens_NoVeg/High_Dens_NoVeg
SILVIS Lab
1
Intermix
SILVIS Lab
4
Uninhabited_Veg
SILVIS Lab
7
Water
SILVIS Lab
5
Uninhabited_NoVeg/Very_Low_Dens_NoVeg/Low_Dens_NoVeg
SILVIS Lab
2
Interface
SILVIS Lab
3
Very_Low_Dens_Veg
SILVIS Lab
RASTERCODE10
Integer
4
10
0
HUDEN2010
2010 housing density (units / square km)
SILVIS Lab, U.S. Census Bureau
HUDEN2010
Double
8
38
8
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
OBJECTID
OID
4
10
0
BLK20
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 (U.S. Census Bureau).
U.S. Census Bureau
BLK20
String
15
0
0
FIPS
U.S. County Federal Information Processing Standards (FIPS) code.
National Institute of Standards and Technology (NIST)
FIPS
String
5
0
0
HU2000
2000 total housing units (allocated)
SILVIS Lab, U.S. Census Bureau
HU2000
Integer
4
10
0
WUIFLAG2020
Flag designating WUI (1=intermix; 2=interface) vs. non-WUI (0) areas in 2020
SILVIS Lab
WUIFLAG2020
Integer
4
10
0
HUDEN1990
1990 housing density (units / square km)
SILVIS Lab, U.S. Census Bureau
HUDEN1990
Double
8
38
8
HU1990
1990 total housing units (allocated)
SILVIS Lab, U.S. Census Bureau
HU1990
Integer
4
10
0
Shape.STArea()
Shape.STArea()
Double
0
0
0
Shape.STLength()
Shape.STLength()
Double
0
0
0
This data publication includes a geodatabase (\Data\CONUS_WUI_block_1990-2020_change.gdb) containing WUI data for the conterminous United States. Data include housing and population densities for 1990, 2000, 2010, and 2020; wildland vegetation percentages for 1992, 2001, and 2011; as well as WUI classes in 1990, 2000, 2010, and 2020. Specific information about these data is available in the detailed section above. Spatial objects (features) do not model any real world entities. Spatial objects (features) can be thought of as uniform areas of housing density and landcover, which have been assigned a Wildland Urban Interface classification. Items pertaining to National Land Cover Data (NLCD) make use of the following classification: https://www.mrlc.gov/data/legends/national-land-cover-database-class-legend-and-description.
None provided
dataset
EPSG
8.9.3(9.3.0.0)
Simple
FALSE
4605
TRUE
FALSE