RAVG
Rapid Assessment of Vegetation Condition After Wildfire

The Rapid Assessment of Vegetation Condition after Wildfire (RAVG) program produces data estimating post-fire vegetation conditions on National Forest System (NFS) lands, including basal area loss and canopy cover loss. These data products support a data-driven process to inform prioritization and funding decisions of post-fire reforestation efforts.

Timeline

30 - 45 days after fire containment

Data Available

2007-2020

Audience

The primary audience for RAVG data and products are Regional
Silviculturists who need to communicate yearly reforestation
and restoration needs to decision makers for specific funding requests.

Mapping Method

RAVG Severity layers are created by thresholding and regression modeling based on hundreds of field plots.

Deliverables

  • Pre- and post-fire satellite imagery
  • Burn area boundary shapefile
  • Differenced Normalized Burn Ratio (dNBR) and Relativized dNBR (continuous)
  • Burn Severity layer (Composite Burn Index)
  • % Change in Basal area layer
  • % Change in Canopy cover layer
  • Metadata
  • Summary table
  • Visualization products