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Rapid Assessment of Vegetation Condition after Wildfire (RAVG) Basal Area Percent Change (Map Service)
OwnerUnited States Department of Agriculture - view all
Update frequencyunknown
Last updated10 months ago
Overview

The USDA Forest Service Rapid Assessment of Vegetation Condition after Wildfire (RAVG) program produces geospatial data and maps of post-fire vegetation condition using standardized change detection methods based on Landsat or similar multispectral satellite imagery. RAVG data products characterize vegetation condition within a fire perimeter, and include estimates of percent change in basal area (BA), percent change in canopy cover (CC), and a 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'). National mosaics of each thematic product are prepared annually. Mosaics of extended assessments, if any, are provided separately from initial assessment mosaics. This map service includes annual raster mosaics of published BA-7 datasets for fires that burned during calendar years 2013 through 2020, excluding 2020 extended assessments. The associated burned area perimeters are available via the Enterprise Data Warehouse (EDW, see https://data.fs.usda.gov/geodata/edw/datasets.php).

Basal AreaBiotaBurn SeverityCBICONUSCanopy CoverComposite Burn IndexDifferenced Normalized Burn RatioLandsatNBRNormalized Burn RatioOpen DataRAVGRNBRRelative Differenced Normalized Burn RatioUnited StatesVegetation ConditionWildfireWildland FiredNBR
Additional Information
KeyValue
dcat_issued2017-06-08
dcat_modified2022-08-25
dcat_publisher_nameU.S. Forest Service
guidhttps://www.arcgis.com/home/item.html?id=60d7ee2eb63f4e5cb99dc382ac1646f4
language
harvest_object_idba0294ee-5075-43b4-8826-f336c018827d
harvest_source_id2c0b1e04-ba48-4488-9de5-0dab41f9913f
harvest_source_titleUSDA Open Data Catalog
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