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The fireshed and project area boundaries are designed to delineate hotspots of fire transmission to adjacent or nearby communities to facilitate cohesive cross-boundary risk mitigation planning. |
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The fireshed and project area boundaries are designed to delineate hotspots of fire transmission to adjacent or nearby communities to facilitate cohesive cross-boundary risk mitigation planning. |
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Fire Risk data Authors:
Oriana Chegwidden, William Anderegg, Grayson Badgley, Anna Trugman, Danny Cullenward, John Abatzoglou, Jeffery Hicke, Jeremy Freeman, Joseph Hamman
Fireshed Authors: Cody R. Evers, Chris D. Ringo, Alan A. Ager, Michelle A. Day, Fermin J. Alcasena Urdiroz, Ken J. Bunzel, Funding for the Fireshed Registry was provided by the USDA Forest Service, State and Private Forestry. |
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<DIV STYLE="text-align:Left;font-size:12pt"><DIV><DIV><P><SPAN>This data layer combines modeled future fire risk data produced by Anderegg </SPAN><SPAN STYLE="font-style:italic;">et al.</SPAN><SPAN>, 2022 (https://doi.org/10.1111/ele.14018). This research modelled fire risk using monthly temperature, precipitation and climatic water deficit (CWD) derived from the TerraClimate dataset (SI Methods), a 12-month rolling average of US-average monthly temperature and precipitation to capture longer-term trends, as well as the National Forest Type Dataset fit to Monitoring Trends in Burn Severity data for moderate and severe fires. The raw fire risk data was separated from the combined risk estimate, and four twenty-year averages were then produced from the data: </SPAN><SPAN>1980–1999, 2000–2019, 2040–2059, and 2080–2099. </SPAN><SPAN>The source data that was used can be downloaded here: https://doi.org/10.5281/zenodo.4741333. The resulting 20 year average data was then summarized to the Fireshed scale. </SPAN></P><P><SPAN>The data were classified using the following breakpoints: </SPAN></P><UL><LI><P><SPAN>Very Low (1): ≤ 0.000072% per year</SPAN></P></LI><LI><P><SPAN>Low (2): 0.000072–0.000494% per year</SPAN></P></LI><LI><P><SPAN>Moderate (3): 0.000494–0.000825% per year</SPAN></P></LI><LI><P><SPAN>High (4): 0.000825–0.001562% per year</SPAN></P></LI><LI><P><SPAN>Very High (5): </SPAN><SPAN><SPAN>>0.001562% </SPAN></SPAN><SPAN>per year</SPAN></P></LI></UL><P><SPAN>The Fireshed Registry is a geospatial dashboard and decision tool built to organize information about wildfire transmission to communities and monitor progress towards risk reduction for communities from management investments. 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 continental United States. This size was chosen to contain most (> 99%) of the large fires, with fire sizes generally smaller than 250,000 acres, although the largest extreme event fires can span multiple firesheds.These boundaries were created by dividing up the landscape into regular-sized units that represent similar source levels of community exposure to wildfire risk. Project areas are approximately 25,000 acre accounting units nested within firesheds. This data publication includes a geodatabase that contains for both fireshed and project areas: boundaries, size, total annual number of buildings inside and outside of the area exposed by wildfires ignited within the area (based on 2010 housing unit data and 2014 fuels conditions), and percent of the area that has been disturbed since 2014 (2015-2018). Additional information about the Fireshed Registry can be found here: https://www.fs.usda.gov/research/rmrs/projects/firesheds</SPAN></P><P><SPAN /></P><P><SPAN>Spatial Extent: CONUS</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;font-size:12pt"><DIV><DIV><P><SPAN>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 land 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></DIV></DIV></DIV> |
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Future and Historical Fire Risk summarized to Firesheds |
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["Wildfire","Wildfire exposure","Wildfire transmission","Wildfire management"] |
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en-US |
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150000000 |
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