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Rapid Assessment of Vegetation Condition after Wildfire (RAVG) Basal Area Percent Change (Map Service)

Metadata Updated: April 21, 2025

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 2012 through 2023, 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).

Access & Use Information

Public: This dataset is intended for public access and use. License: Creative Commons Attribution

Downloads & Resources

Dates

Metadata Created Date November 3, 2022
Metadata Updated Date April 21, 2025

Metadata Source

Harvested from USDA JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date November 3, 2022
Metadata Updated Date April 21, 2025
Publisher U.S. Forest Service
Maintainer
Identifier https://www.arcgis.com/home/item.html?id=60d7ee2eb63f4e5cb99dc382ac1646f4
Data First Published 2017-06-08
Data Last Modified 2024-06-12
Category geospatial
Public Access Level public
Bureau Code 005:96
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 07117ca0-e810-4a8c-ad67-95a60a9fd86b
Harvest Source Id d3fafa34-0cb9-48f1-ab1d-5b5fdc783806
Harvest Source Title USDA JSON
Homepage URL https://data-usfs.hub.arcgis.com/documents/usfs::rapid-assessment-of-vegetation-condition-after-wildfire-ravg-basal-area-percent-change-map-service
License https://creativecommons.org/licenses/by/4.0/
Metadata Type geospatial
Old Spatial -127.7380,23.7250,-72.8940,50.8470
Program Code 005:059
Progresscode onGoing
Source Datajson Identifier True
Source Hash 3df0b81fc1d166ef2de3735318baa37dc6c265b386046654a57778c963d0bb1f
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -127.7380, 23.7250, -127.7380, 50.8470, -72.8940, 50.8470, -72.8940, 23.7250, -127.7380, 23.7250}

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