Layers:

Layer: RAVG Severity (0)


Name: RAVG Severity

Display Field: GIS_FireName

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description:

Wildfire burn severity data was downloaded from the RAVG website (https://burnseverity.cr.usgs.gov/ravg/data-access). Burned Severity raster’s, measured as percent Basal Area Loss in 7 categories (BA7), were compiled in a central ArcGIS file geodatabase. All raster datasets were projected to CA Teale Albers NAD83 (meters) and clipped to an area representing the Montane and Upper Montane (see explanation below) region within the National Forest System Administrative Boundaries. Once all raster datasets were clipped to the appropriate area, they were further reclassified into Very Low/Unburned (Class 1), Low (Class 2/3), Moderate (Class 4/5) and High (Class 6/7). Total acreages for each class within the montane/upper montane for each administrative forest were calculated by summing the pixels associated with that class and multiplied by the area of the pixel.



Copyright Text: US Forest Service Pacific Southwest Region GIS team, RAVG Team: Miller, J. D., & Thode, A. E. (2007). Quantifying burn severity in a heterogeneous landscape with a relative version of the delta Normalized Burn Ratio (dNBR). Remote Sensing of Environment, 109(1), 66-80. Miller, J. D., Knapp, E. E., Key, C. H., Skinner, C. N., Isbell, C. J., Creasy, R. M., & Sherlock, J. W. (2009). Calibration and validation of the relative differenced Normalized Burn Ratio (RdNBR) to three measures of fire severity in the Sierra Nevada and Klamath Mountains, California, USA. Remote Sensing of Environment, 113(3), 645-656. Miller, J. D., & Quayle, B. (2015). Calibration and validation of immediate post-fire satellite-derived data to three severity metrics. Fire Ecology, 11(2), 12-30.

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -332874.291414408
YMin: -481640.470795634
XMax: 320405.708585594
YMax: 460569.529204367
Spatial Reference: 3310 (3310)


Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field:

Type ID Field: Severity

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• FID_ravg_ba7_Severity_Merged_20 (type: esriFieldTypeInteger, alias: FID_ravg_ba7_Severity_Merged_2022, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Id (type: esriFieldTypeInteger, alias: Id, SQL Type: sqlTypeOther, nullable: true, editable: true)
• gridcode (type: esriFieldTypeInteger, alias: gridcode, SQL Type: sqlTypeOther, nullable: true, editable: true)
• GIS_Acres (type: esriFieldTypeDouble, alias: GIS_Acres, SQL Type: sqlTypeOther, nullable: true, editable: true)
• GIS_Year (type: esriFieldTypeSmallInteger, alias: GIS_Year, SQL Type: sqlTypeOther, nullable: true, editable: true)
• GIS_FireName (type: esriFieldTypeString, alias: GIS_FireName, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• MERGE_SRC (type: esriFieldTypeString, alias: MERGE_SRC, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• Severity (type: esriFieldTypeString, alias: Severity, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• SeveritySort (type: esriFieldTypeSmallInteger, alias: SeveritySort, SQL Type: sqlTypeOther, nullable: true, editable: true)
• FID_Montane_Upper_Montane_2021 (type: esriFieldTypeInteger, alias: FID_Montane_Upper_Montane_2021, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Ecozone (type: esriFieldTypeString, alias: Ecozone, SQL Type: sqlTypeOther, length: 255, 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)

Types:

ID: High
Name: High
Domains:

Templates:

Name: High
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• Severity: High

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ID: Moderate
Name: Moderate
Domains:

Templates:

Name: Moderate
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• Severity: Moderate

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ID: Low
Name: Low
Domains:

Templates:

Name: Low
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• Severity: Low

---

ID: Unburned
Name: Unburned
Domains:

Templates:

Name: Unburned
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• Severity: Unburned

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Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 10/31/2023 4:35:57 PM

Schema Last Edit Date: 10/31/2023 4:35:57 PM

Data Last Edit Date: 9/26/2023 4:59:10 PM