{ "snippet": "The purpose of the National All-Lands Wildfire Risk Assessment (NaWRA) is to provide information about wildfire risk to highly valued resources and assets across all land ownerships in the Conterminous United States (CONUS) to support fuels and fire management planning decisions. Data users are encouraged to access the companion report (NaWRA 2025 Methods) for the full details of the assessment.", "summary": "The purpose of the National All-Lands Wildfire Risk Assessment (NaWRA) is to provide information about wildfire risk to highly valued resources and assets across all land ownerships in the Conterminous United States (CONUS) to support fuels and fire management planning decisions. Data users are encouraged to access the companion report (NaWRA 2025 Methods) for the full details of the assessment.", "accessInformation": "USDA - GEO; USDA - USFS \u2013 GTAC", "thumbnail": "thumbnail/thumbnail.png", "maxScale": 1155581.108577, "typeKeywords": [ "ArcGIS Server", "Data", "Image Service", "Service" ], "description": "

The National All-Lands Wildfire Risk Assessment (NaWRA) is a quantitative analysis of how resources and assets may be impacted by wildfire based on: 1) the intensity of a wildfire if one should occur, 2) the exposure of resources and assets based on their locations, and 3) the susceptibility of those resources and assets to wildfire. Data users are encouraged to access the companion report (NaWRA 2025 Methods) for the full details of the assessment.<\/span><\/p>

Wildfire hazard was modeled using 2025 capable fuels data. Potential wildfire intensity was estimated at 30-m resolution in the form of conditional probabilities of burning in six different flame length bins (0-2, 2-4, 4-6, 6-8, 8-12, and 12+ ft) using the Pyrologix WildEST Model (Scott et al. 2024). WildEST is a deterministic wildfire modeling tool that integrates spatially continuous weather inputs weighted based on how likely they are to be realized on the landscape. Potential wildfire burn probability was estimated for the 11 Western States by running the USDA Forest Service FSim Model (Finney et al. 2011) at 120-m resolution with post-processing to upsample results to 30-m resolution and estimate burn probability in non-burnable areas adjacent to wildland fuels. Wildfire burn probability for the remainder of CONUS came from the Wildfire Risk to Communities Project (Scott et al. 2024) or the Southern Wildfire Risk Assessment (SouthWRA 2024) modeled with FSim using similar methods.<\/span><\/p>

The People and Property, Critical Infrastructure, and Historic Structures and Buildings layer represents the potential combined impact to human assets.<\/span><\/p>

The People and Property Highly Valued Resource and Asset (HVRA) Theme represents the spatial distribution and density of housing units. Wildfire has the potential to damage or destroy homes, apartments, other housing units, outbuildings, and their contents. In extreme cases, housing unit exposure to wildfire also results in human injuries or deaths. The People and Property HVRA was mapped using the housing unit density raster from the USDA Forest Service Wildfire Risk to Communities Project, which estimates housing unit density with 2020 census housing unit data and a comprehensive building footprint dataset (Jaffe et al. 2024). Fuel type was used as a covariate for the response functions to reflect the expectation for higher losses with increasing fire intensities, fire residence times, and resistance to control across the grass-shrub-tree fuel type gradient.<\/span><\/p>

The Critical Infrastructure Highly Valued Resource and Asset (HVRA) Theme represents important healthcare, emergency service, communication, and energy infrastructure. Wildfire has potential to temporarily disrupt the use of or permanently damage infrastructure. Critical Infrastructure was mapped using Homeland Infrastructure Foundation Level Data (HIFLD; <https://www.dhs.gov/gmo/hifld>) accessed in early 2024 to represent Hospitals, Emergency Services, Communication Devices, Electric transmission lines, Power Plants, Substations, Natural Gas Pipelines, and Oil & Natural Gas Wells. The HIFLD program provides consistent spatial data for homeland security analysis and planning.<\/span><\/p>

The Historic Structures and Buildings Highly Valued Resource and Asset (HVRA) Theme represents features that society has deemed culturally significant and worthy of preservation. Historic Structures and Buildings were mapped using the National Register of Historic Places (NRHP; <https://www.nps.gov/subjects/nationalregister/database-research.htm>) accessed in early 2024. The Historic Structures and Historic Building point layers were extracted from the NRHP database and merged into a single layer. Each point feature was buffered by 60-m to represent the approximate zone in which wildfire could impact the feature. Fuel type was used as a covariate for the response functions to reflect the expectation for higher losses with increasing fire intensities, fire residence times, and resistance to control across the grass-shrub-tree fuel type gradient.<\/span><\/p><\/div><\/div><\/div>", "licenseInfo": "

The USDA Forest Service makes no warranty, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, nor assumes any legal liability or responsibility for the accuracy, reliability, completeness or utility of these geospatial data, or for the improper or incorrect use of these geospatial data. These geospatial data and related maps or graphics are not legal documents and are not intended to be used as such. The data and maps may not be used to determine title, ownership, legal descriptions or boundaries, legal jurisdiction, or restrictions that may be in place on either public or private land. Natural hazards may or may not be depicted on the data and maps, and users should exercise due caution. The data are dynamic and may change over time. The user is responsible to verify the limitations of the geospatial data and to use the data accordingly.<\/span><\/p>

Additionally, the U.S. Forest Service waives copyright and related rights in the work worldwide through the CC0 (which can be found at <\/span>https://creativecommons.org/public-domain/cc0/<\/span><\/a>). <\/span><\/p>

In accordance with Federal civil rights law and U.S. Department of Agriculture (USDA) civil rights regulations and policies, the USDA, its Agencies, offices, and employees, and institutions participating in or administering USDA programs are prohibited from discriminating based on race, color, national origin, religion, sex, disability, age, marital status, family/parental status, income derived from a public assistance program, political beliefs, or reprisal or retaliation for prior civil rights activity, in any program or activity conducted or funded by USDA (not all bases apply to all programs). Remedies and complaint filing deadlines vary by program or incident.<\/span><\/span><\/p>

Persons with disabilities who require alternative means of communication for program information (e.g., Braille, large print, audiotape, American Sign Language, etc.) should contact the State or local Agency that administers the program or contact USDA through the Telecommunications Relay Service at 711 (voice and TTY). Additionally, program information may be made available in languages other than English.<\/span><\/span><\/p>

To file a program discrimination complaint, complete the USDA Program Discrimination Complaint Form, AD-3027, found online at <\/span><\/span>How to File a Program Discrimination Complaint<\/span><\/span><\/a> and at any USDA office or write a letter addressed to USDA and provide in the letter all of the information requested in the form. To request a copy of the complaint form, call (866) 632-9992. Submit your completed form or letter to USDA by: (1) mail: U.S. Department of Agriculture, Office of the Assistant Secretary for Civil Rights, 1400 Independence Avenue, SW, Mail Stop 9410, Washington, D.C. 20250-9410; (2) fax: (202) 690-7442; or (3) email: <\/span><\/span>program.intake@usda.gov<\/span><\/span><\/a>.<\/span><\/span><\/p>

USDA is an equal opportunity provider, employer, and lender.<\/span><\/span><\/p><\/div><\/div><\/div>", "catalogPath": "", "title": "USFS_QWRA_PeopleInfraHisteNVC_CONUS", "type": "Image Service", "url": "https://imagery.geoplatform.gov/iipp", "tags": [ "People", "Property", "Critical", "Infrastructure", "Historic", "Structures", "Buildings", "Net", "Value", "Change", "Expected", "National", "All-Lands", "Wildfire", "Risk", "Assessment", "NaWRA", "QWRA", "US Forest Service", "USFS", "IIPP", "Interdepartmental Imagery Publication Platform" ], "culture": "en-US", "portalUrl": "", "name": "USFS_QWRA_PeopleInfraHisteNVC_CONUS", "guid": "", "minScale": 147914381.89788899, "spatialReference": "WGS_1984_Web_Mercator_Auxiliary_Sphere" }