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Rapid Assessment of Vegetation Condition: Perimeters (Feature Layer)
L o a d i n g
Organization
United States Department of Agriculture - view all
Update frequencyunknown
Last updated2 years ago
Overview

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).

Basal AreaBiotaBurn Area BoundaryBurn SeverityCBICONUSCanopy CoverComposite Burn IndexOpen DataPerimeterRAVGUnited StatesVegetation ConditionWildfireWildland Fire
Additional Information
KeyValue
Dcat Issued2023-08-24
Dcat Modified2023-10-29
Dcat Publisher NameU.S. Forest Service
Guidhttps://www.arcgis.com/home/item.html?id=d5cafd44cf404bb9bd66b3e40dd143cb&sublayer=0
Harvest Object Ida1170077-bc0e-4970-9f49-eb2b5fd8f2a3
Harvest Source Id2c0b1e04-ba48-4488-9de5-0dab41f9913f
Harvest Source TitleUSDA Open Data Catalog
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Data Sensitivity Classunknown
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