20220302 14100900 1.0 FGDC CSDGM Metadata FALSE Fire_FireshedReg_Subfireshed -178.204310 -66.888650 18.910348 71.363840 1 Fire_FireshedReg_ProjArea_RC Relationship Fire_FireshedReg_ProjArea_RC Relationship 002 Geographic GCS_North_American_1983 Angular Unit: Degree (0.017453) <GeographicCoordinateSystem xsi:type='typens:GeographicCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.3.0'><WKT>GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433],AUTHORITY[&quot;EPSG&quot;,4269]]</WKT><XOrigin>-400</XOrigin><YOrigin>-400</YOrigin><XYScale>999999999.99999988</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>8.98315284119521e-09</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><LeftLongitude>-180</LeftLongitude><WKID>4269</WKID><LatestWKID>4269</LatestWKID></GeographicCoordinateSystem> 20250310 19565700 20250310 19565700 FGDC USFS Chief Information Office, Enterprise Data Warehouse Please send an e-mail to the address below. Washington DC 20250 SM.FS.data@usda.gov 20250102 ArcGIS Metadata 1.0 USFS Chief Information Office, Enterprise Data Warehouse Please send an e-mail to the address below. Washington DC 20250 US SM.FS.data@usda.gov None GDB see Format Specification ArcGIS Geodatabase file Files zipped with 7-Zip 19.0 https://doi.org/10.2737/RDS-2020-0054 https://doi.org/10.2737/RDS-2020-0054-3 Enterprise Geodatabase Feature Class USA S_USA.Fire_FireshedReg_Subfireshed 2026-03-10T11:16:58 Forest Service Research Data Archive Fort Collins, CO vector digital data The Fireshed Registry is a geospatial dashboard and decision tool built to organize information about wildfire transmission to buildings and monitor progress towards risk reduction for communities from management investments. The concept behind the Fireshed Registry is to identify and map the source of risk rather than what is at risk across all lands in the United States. While the Fireshed Registry was organized around mapping the source of fire risk to communities, the framework does not preclude the assessment of other resource management priorities and trends such as water, fish and aquatic or wildlife habitat, or recreation. The Fireshed Registry is also a multi-scale decision tool for quantifying, prioritizing, and geospatially displaying wildfire transmission to buildings in adjacent or nearby communities. Fireshed areas in the Fireshed Registry are approximately 250,000 acre accounting units that are delineated based on a smoothed building exposure map of the United States. These boundaries were created by dividing up the landscape into regular-sized units that represent similar source levels of community exposure to wildfire risk. Subfiresheds are approximately 25,000 acre accounting units nested within firesheds. Firesheds for the Conterminous U.S., Alaska, and Hawaii were generated in separate research efforts and are published in incremental versions in the Research Data Archive. They are combined here for ease of use. The fireshed and subfireshed boundaries are designed to delineate hotspots of fire transmission to adjacent or nearby communities to facilitate cohesive cross-boundary risk mitigation planning. Exposure metrics are designed to be used for strategic allocation. Tactical operations should incorporate additional local knowledge. This project was funded by the USDA Forest Service, State & Private Forestry and the USDA Forest Service, Rocky Mountain Research Station. Additional acknowledgments are extended to Portland State University, Oregon State University, USDA Forest Service International Visitor Program, and Kingbird Software. USFS Chief Information Office, Enterprise Data Warehouse Please send an e-mail to the address below. Washington DC 20250 US SM.FS.data@usda.gov United States geoscientificInformation ISO 19115 Topic Category Fire Fire effects on environment Wildland/urban interface Natural Resource Management & Use Forest management National Research & Development Taxonomy wildfire wildfire exposure wildfire transmission wildfire management geoscientificInformation Fire Fire effects on environment Wildland/urban interface Natural Resource Management & Use Forest management wildfire wildfire exposure wildfire transmission wildfire management United States 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: Evers, Cody R.; Ringo, Chris D.; Ager, Alan A.; Day, Michelle A.; Alcasena Urdíroz, Fermin J.; Bunzel, Ken. 2024. The Fireshed Registry: Fireshed and project area boundaries for the continental United States. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2020-0054-3 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. The U.S. Forest Service makes no warranty, express or implied, nor assumes any liability or responsibility for the accuracy, reliability, completeness, or utility of these geospatial data or for the improper or incorrect use of those data. The data are dynamic and may change over time. The user is responsible for verifying the limitations of the geospatial data and for using the data accordingly. 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 these 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. Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333 true -179 -65 72 18 Ground condition 2026-03-10 1 -178.204310 -66.888650 71.363840 18.910348 Subfireshed boundaries are accounting areas that were delineated based on specific fuel conditions and modeling tools that were available when each segment was generated. The specific conditions and tools are documented in the metadata found in the Research Data Archive. The boundaries among adjacent firesheds are the product of the “Simple Linear Iterative Clustering” (SLIC) algorithm, which is dependent on the initial placement of points from which the image segments (i.e., clusters) are derived. This means that the boundaries between adjacent subfiresheds, particularly those in areas with homogenous exposure, may vary over successive runs. These data represent one such solution. Achanta, R.; Shaji, A.; Smith, K.; Lucchi, A.; Fua, P.; Süsstrunk, S. 2012. SLIC superpixels compared to state-of-the-art superpixel methods. IEEE Transactions on Pattern Analysis and Machine Intelligence 34(11): 2274-2282. https://doi.org/10.1109/tpami.2012.120 No consistency evaluation was performed. Fireshed and subfireshed boundaries reflect the resolution of the underlying building exposure raster of 270 meters. These boundaries can be considered complete, but note that boundaries representing features such as national boundaries and coastlines will be greatly generalized and, in the case of islands, they may be omitted entirely. Management selected high risk firesheds based on building exposure that was treatable in various scenario planning models. The Crisis Strategy label was originally published in the Fireshed Exposure table. 2026-03-10 Features from unpublished research added Hawaii Firesheds to the published Fireshed features for CONUS and Alaska. 2026-03-10 The High Risk labels were added as a new attribute to the Fireshed feature class. 2026-03-10 RDA_Firesheds Evers, Cody R. Ringo, Chris D. Ager, Alan A. Day, Michelle A. Alcasena Urdíroz, Fermin J. Bunzel, Ken Forest Service Research Data Archive Fort Collins, CO vector digital data https://doi.org/10.2737/RDS-2020-0054-3 92529 Subireshed boundaries in this data set are accounting units that facilitate agency wildfire risk assessments to prioritize forest and fuel management investments that target high leverage landscapes in terms of reducing wildfire risk. They do not follow identifiable geographic features. The ArcGIS features are non-overlapping boundaries, nested within Firesheds to delineate wildfire transmission to communities for monitoring progress towards risk reduction from management investments. Subfiresheds are associated with a parent Fireshed through the Fireshed ID. Exposure attributes that are available through the Forest Service Enterprise Data Warehouse or Research Data Archive can be associated to these Subfiresheds based on Subfireshed ID, or PA_ID. None provided Subfiresheds Vector polygons: Subfiresheds are approximately 25,000 acre accounting units nested within firesheds. None Feature Class 92529 OBJECTID Internal feature number ESRI Sequential unique whole numbers that are automatically generated. OBJECTID OID 4 10 0 Shape Feature geometry ESRI Coordinates defining the features. SHAPE Geometry 8 0 0 Fireshed_ID Fireshed_ID of the containing fireshed USFS 1 12018 Fireshed_ID Integer 4 10 0 Subfireshed_ID Subfireshed unique ID USFS 1 120168 Subfireshed_ID Integer 4 10 0 Subfireshed_Area_Ha Area of subfireshed, in hectares USFS Floating point numbers > 0 Subfireshed_Area_Ha Double 8 38 8 SHAPE.AREA SHAPE.AREA Double 0 0 0 SHAPE.LEN SHAPE.LEN Double 0 0 0 dataset EPSG 6.5(3.0.1) Simple FALSE 92529 TRUE FALSE