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A Product Quality Control and Assessment (PQCA) Plan was developed by the PQWT and accepted by the LANDFIRE (LF) Leadership Team and LF Executive Oversight Committee. The plan includes quality control procedures for production processes as well as a product quality assessment approach where applicable. For details of the assessment approach, please download and review the PQCA Plan currently posted for the Western U.S. Milestone.

In short, the LF products quantitatively assessed under the PQCA Plan are those that are modeled directly from geo-referenced field plots contained in the LF Reference Data Base (LFRDB). This includes the Existing Vegetation Type (EVT) and Environmental Site Potential (ESP) products for the Western U.S. Milestone (WUS). For the Eastern U.S. (EUS) and Alaska/Hawaii (AK/HI) Milestones, only the EVT layer is assessed, due to changes in ESP mapping methods. Canopy Fuels and Fire Behavior Fuel Model (FBFM) spatial products are also assessed under the PQCA plan for EUS and WUS, although with different methods than those used for EVT. Canopy Fuels and FBFM were not assessed in AK/HI.

Many of the product quality assessment results are presented by Super Zones, which are aggregations of individual LF mapping zones. Super Zones represent areas with large enough sample sizes to enable meaningful inferences about product quality, given the sampling design used to withhold field plots for product quality assessment. See the PQCA Plan for more detail on the holdout sample design and the use of super zones in the product quality assessment process.

For U.S. mapping zones, results are summarized in six reports as follows: 

Eastern U.S. 

The LANDFIRE National Eastern Milestone Agreement Assessment Summary presents the overall agreement for the East at a summary level by super zone.

The LANDFIRE National Eastern Milestone Agreement Assessment Super Zone Analysis presents more detailed information about agreement for specific mapped classes within individual super zones in the East.

Western U.S.

The LANDFIRE National Western Milestone Agreement Assessment Summary presents the overall agreement for the West at a summary level by super zone.

The LANDFIRE National Western Milestone Agreement Assessment Super Zone Analysis presents more detailed information about agreement for specific mapped classes within individual super zones in the West.

Alaska/Hawaii

The LANDFIRE National AK/HI Milestone Agreement Assessment Summary presents the overall agreement for Alaska and Hawaii at a summary level by super zone.

The LANDFIRE National AK/HI Milestone Agreement Assessment Super Zone Analysis presents more detailed information about agreement for specific mapped classes within individual super zones in Alaska and Hawaii.

A graphic of the United States separated into zones

Product Description

This page includes a general description of the product, please consult the schedule and version pages for information specific to each release.

LANDFIRE (LF) Annual Disturbance (Dist) products depict where change occurred on the landscape, both spatially and temporally, on an annual basis. These products inform model vegetation transitions to provide updates to LF vegetation, fuel, and fire regime products.

Annual Disturbance products are attributed with disturbance year, type, and severity. These products are applicable in several areas of research and management such as landscape change, habitat gain/loss, carbon stock change, vegetation restoration, and more.

LF 2016 Remap and beyond includes a 90-kilometer buffer along the 1,500 miles of the eastern and southern borders AK shares with Canada. Then with the LF 2020 update, and future updates, for the Conterminous United States (CONUS) a 90-kilometer buffer into Mexico is also included.

 

Image of the upper northwest corner of the U.S. with disturbances showing in red and green.

Annual Disturbance Products

Annual Disturbance Resources

Product Details

The Disturbance and Treatment Polygons (Events) is a collection of natural disturbance and land management activities used to determine disturbance causality in LF products and can be used in change detection analysis. Disturbance and Treatment Polygons (Events) contains over 2.4 million polygons from 1999-2024 across the United States and U.S. territories.

The Disturbance and Treatment Polygons (Events) includes contributions from:

  • Federal
  • State
  • Local
  • Private Organizations 

Disturbance and Treatment Polygons (Events) include a feature dataset for Alaska (AK), CONUS, Hawaii (HI), and the island territories of Federated States of Micronesia (FSM), Guam/Northern Mariana (GUCNMI), Palau, and Puerto Rico.

Each feature dataset contains two feature classes, namely Raw Events and Model Ready Events. The Public Raw and Model Ready Event feature classes include disturbance and vegetation/fuel treatment data.

In addition to the feature classes there is also a look up table for the source code, which is an attribute in all feature classes. The source code is a LANDFIRE internal code assigned to each data source. Please consult the Look Up Table link for more information about the data sources included and excluded from this release.

Look Up Table


Certain proprietary and/or sensitive data were removed in this public geodatabase. The lutSource_Code is a table which is an attribute in all three feature classes. Consult the table "lutSource_Code" for more information about the data sources.

Improvements

LANDFIRE is no longer producing the exotics polygon layer, and it is no longer included in the Disturbance and Treatment Polygons (Events). You can still access the LF 2023 Exotics polygon data which includes Exotics data from 1999-2023 on the LF Map Viewer.

Beginning with the LF 2022 Update, LANDFIRE started re-collecting disturbance and treatment polygons June 1 each year from online National data sources. These sources include Forest Service Activity Tracking System (FACTS), National Interagency Fire Center (NIFC), USFS National Insect and Disease Risk Map (NIDRM), and Interior Fuels and Post-Fire Reporting System (IFPRS). Updated data is pulled from these sources and any new treatments or disturbances are added. For LF 2022, LANDFIRE added 6.5 million acres of disturbance and treatment polygon events data to the LF Public Raw Events product upon re-collection. For a grand total of ~28 million acres of Raw Events data featured within the LF 2022 Update.
 

Select your GeoArea of interest from the list below to download the LF 2016 Public version of the LF Reference Database.

Picture of the U.S., AK, HI with zone maps indicated.

A public version of the LANDFIRE (LF) 2016 Remap Reference Database (LFRDB) is available. The LFRDB contains a subset of the data and attributes used for LF National and LF Remap production. The Public LFRDB includes vegetation and fuel data that were largely amassed from existing information resources such as:

  • USFS Vegetation and Fuel Plot Data
  • USGS National Gap Analysis Program (GAP)
  • NPS Inventory and Monitoring (I&M)
  • State Inventory Data

Updated plot information was compiled for LF Remap and used to inform existing vegetation mapping. This new data was added to the public LFRDB for LF Remap.

Note: The latest LFRDB is LF 2016 Remap.

Data archived in the LF Remap Public LFRDB include:

Major Public LFRDB attributes derived from the sampling data include:

  • Ecological System and NVCS Group labels
  • Lifeform cover and height estimates
  • Predictor data extracted from ancillary data layers and used for mapping

Certain proprietary and/or sensitive data were removed in the public database. Consult the table lutdtVisitsSourceID in the database regarding data sources.

The Public LFRDB can be used as input to spatial and non-spatial vegetation models and is applicable for ground truthing and accuracy assessments for a variety of modeling and mapping efforts.


 

Public LANDFIRE Reference Database Resources

LANDFIRE Technical Documentation

A detailed description of the processes that went into the LF 2016 Remap effort and the methods for creating each LF product. 
View Document

LANDFIRE Dictionary

A “one-stop shop” general resource that provides information about products, Attribute Data Dictionaries (ADDs), data and metadata, and terms. 
View Document

LF Definitions, Quality, and Standards

Provides information about contributors, metadata and data standards, data creation, and data testing. This document also provides details about our general data release process.
View Document

LANDFIRE Research Review

LANDFIRE welcomes researchers to share work that incorporates LANDFIRE Program Products for a friendly, informal review—at any stage of development.
Learn More