eng utf8 dataset dataset USFS Chief Information Office, Enterprise Data Warehouse Please send an e-mail to the address below.

Washington DC 20250 SM.FS.data@usda.gov

pointOfContact 2023-07-17 ISO 19139 Geographic Information - Metadata - Implementation Specification 2007 geometryOnly composite 2163 4269 EPSG 6.5(3.0.1) 2024-04-15T14:57:18 publication Geospatial Technology and Applications Center (GTAC) originator USDA Forest Service originator mapDigital The USDA Forest Service Rapid Assessment of Vegetation Condition after Wildfire (RAVG) program produces geospatial and related data representing post-fire vegetation condition by means of standardized change detection methods based on Landsat or similar multispectral satellite imagery. RAVG data products characterize the impact of disturbance (fire) on vegetation within a fire perimeter, and include estimates of percent change in live basal area (BA), percent change in canopy cover (CC), and the standardized composite burn index (CBI). Standard thematic products include 7-class percent change in basal area (BA-7), 5-class percent change in canopy cover (CC-5), and 4-class CBI (CBI-4). Contingent upon the availability of suitable imagery, RAVG products are prepared for all wildland fires reported within the conterminous United States (CONUS) that include at least 1000 acres of forested National Forest System (NFS) land (500 acres for Regions 8 and 9 as of 2016). Data for individual fires are typically made available within 45 days after fire containment ("initial assessments"). Late-season fires, however, may be deferred until the following spring or summer ("extended assessments"). Annual national mosaics of each thematic product are prepared at the end of the fire season and updated, as needed, when additional fires from the given year are processed. The annual mosaics are available via the Raster Data Warehouse (RDW, see https://apps.fs.usda.gov/arcx/rest/services/RDW_Wildfire). A combined perimeter dataset, including the burn boundaries for all published Forest Service RAVG fires from 2012 to the present, is likewise updated as needed (at least annually). This current dataset is derived from the combined perimeter dataset and adds spatial information about land ownership (National Forest) and wilderness status, as well as the areal extent of forested land (pre-fire) that experience a modeled BA loss above 50 and 75 percent. RAVG data are produced to assist in post-fire vegetation management planning. They are intended to enhance decision-making capabilities and reduce planning and implementation costs associated with post-fire vegetation management. The primary benefit is the cost-effective and efficient identification of potential areas of resource concern following wildfire. RAVG complements the Burned Area Emergency Response (BAER) Imagery Support program, which provides information integral to determining fire effects on soils, by providing information about fire effects on existing vegetation. RAVG analysis produces a first approximation of areas that may require reforestation treatments after a fire in order to re-establish forest cover and restore associated ecosystem services. This initial approximation may be followed by site-specific diagnosis and development of a silvicultural prescription to more precisely identify reforestation needs. The addition of land ownership, wilderness status, and the extent of high percent basal area loss allows users to assess the location and extent of need more precisely. USDA Forest Service, Geospatial Technology and Applications Center (GTAC) underDevelopment USFS Chief Information Office, Enterprise Data Warehouse Please send an e-mail to the address below.

Washington DC 20250 For general EDW questions: data@fs.fed.us. For technical questions about RAVG data or processes: SM.FS.PostFireRAVG@usda.gov

pointOfContact annually CONUS United States place Burn Severity RAVG Wildland Fire Wildfire Composite Burn Index Burn Area Boundary CBI Canopy Cover Basal Area Perimeter Vegetation Condition theme Biota theme Downloadable Data There are no restrictions on use, except for reasonable and proper acknowledgement of information sources. 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. The USDA 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. None None vector eng utf8 biota Esri ArcGIS Pro 2.9.5 -124.291138 -76.973032 29.242293 49.142553 Ground condition 2012-01-01 2022-01-01 true -124.291138 -76.973032 29.242293 49.142553 Feature Class USFS Chief Information Office, Enterprise Data Warehouse Please send an e-mail to the address below.

Washington DC 20250 SM.FS.data@usda.gov

distributor http://data.fs.usda.gov/geodata/edw/datasets.php dataset This dataset is intended to include perimeters for all fires that meet standard RAVG criteria for the given years; namely, wildfires reported within CONUS that include at least 1000 acres of forested National Forest System land (at least 500 acres for Regions 8 and 9 as of 2016). Exceptions (omissions) may include fires for which suitable imagery was not available in a timely manner (i.e., within 45 days after fire containment for initial assessments). No tests for logical consistency have been performed. This dataset is intended to include perimeters for all fires that meet standard RAVG criteria for the given years; namely, wildfires reported within CONUS that include at least 1000 acres of forested National Forest System land (at least 500 acres for Regions 8 and 9 as of 2016). Exceptions (omissions) may include fires for which suitable imagery was not available in a timely manner (i.e., within 45 days after fire containment for initial assessments). The target scale of this dataset is 1:24,000. The horizontal accuracy of this dataset is determined by that of the moderate-resolution multi-spectral imagery from which it is derived. For each feature, the number of pixels identified as a tree class in the appropriate EVT layer and identified as having 50% or greater live basal area loss was counted and converted to area. The process was repeated for live basal area loss greater than 75%. 2023-01-01T00:00:00 Features from the combined RAVG perimeters dataset were intersected with features representing National Forests and designated wilderness areas. Each feature (polygon) in the resulting feature class includes area from no more than one RAVG perimeter, National Forest and wilderness. 2023-01-01T00:00:00