Name: S_USA.Fire_RAVG_Perimeters_PostfireVegChg

Display Field: FIRE_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: 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).

Copyright Text: USDA Forest Service, Geospatial Technology and Applications Center (GTAC)

Min. Scale: 0

Max. Scale: 0

Default Visibility: false

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -5029252.98439784
YMin: 663889.373259095
XMax: 1842623.09354692
YMax: 5055964.46076008
Spatial Reference: PROJCS["USA_Contiguous_Albers_Equal_Area_Conic",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-96.0],PARAMETER["Standard_Parallel_1",29.5],PARAMETER["Standard_Parallel_2",45.5],PARAMETER["Latitude_Of_Origin",23.0],UNIT["Meter",1.0]]

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Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True

Global ID Field:

Type ID Field:

Fields:

• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• EVENT_ID (type: esriFieldTypeString, alias: EVENT_ID, SQL Type: sqlTypeOther, length: 30, nullable: true, editable: true)
• FIRE_NAME (type: esriFieldTypeString, alias: FIRE_NAME, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• FIRE_YEAR (type: esriFieldTypeString, alias: FIRE_YEAR, SQL Type: sqlTypeOther, length: 4, nullable: true, editable: true)
• ACRES (type: esriFieldTypeDouble, alias: ACRES, SQL Type: sqlTypeOther, nullable: true, editable: true)
• ASMNT_TYPE (type: esriFieldTypeString, alias: ASMNT_TYPE, SQL Type: sqlTypeOther, length: 25, nullable: true, editable: true)
• PREIMGYMD (type: esriFieldTypeString, alias: PREIMGYMD, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
• POSTIMGYMD (type: esriFieldTypeString, alias: POSTIMGYMD, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
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• TREE_AC_75 (type: esriFieldTypeDouble, alias: TREE_AC_75, SQL Type: sqlTypeOther, nullable: true, editable: true)
• EVT_VER (type: esriFieldTypeString, alias: EVT_VER, SQL Type: sqlTypeOther, length: 20, nullable: true, editable: true)
• Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: S_USA.Fire_RAVG_Perimeters_PostfireVegChg
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 5/3/2026 9:03:14 PM

Schema Last Edit Date: 5/3/2026 9:03:14 PM

Data Last Edit Date: 5/3/2026 9:03:14 PM

Supported Operations:   Query   Query Pivot   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat