The Region 6 Wildland Fire Perimeter polygon dataset represents the final mapped wildfire perimeters for the fire years 780 AD to present. This dataset is maintained at the Forest and District level, or their equivalent, to track the area affected by wildland fire. Records within the Region 6 Wildland Fire Perimeter polygon dataset include historical fire polygon information from a variety of sources, perimeters prior to fire year 1800 were obtained through radio carbon dating techniques resulting from research projects conducted by the Pacific Northwest Research Station, the Fire Statistics System (FIRESTAT) computer application for fire record information from 1986 to 2019, and the Interagency Fire Occurrence Reporting Modules (InFORM) application and the National Incident Feature Service (NIFS) Wildfire Perimeters for fire record information from 2020 to present. Fire incidents 10 acres or greater in size are expected, however incidents smaller than 10 acres in size may also be included. InFORM (replaced FIRESTAT) is the authoritative data source for entering and maintaining information from the Individual Fire Report (form FS-5100-29) as required by the United States Forest Service (USFS) Handbook FSH 5109.14, for all wildland fire occurrences on National Forest System Lands or National Forest-Protected Lands. Additional references include the Fireline Handbook FSH 5109.32/NWCG Handbook 3 PMS 410-1. Verification of attribute transfer from FIRESTAT to the Region 6 Wildland Fire Perimeter polygon dataset during the annual update was contained within the polygon attribute table field FIRESTATQC, these values were migrated to the polygon attribute table field FIRERPTQC. Verification of attribute transfer from InFORM to the Region 6 Wildland Fire Perimeter polygon dataset during the annual update is contained within the polygon attribute table field FIRERPTQC. Fire perimeter polygons include all burned and unburned areas within wildland fire perimeters, unless otherwise directed. For example, unburned islands, rocky outcrops, water bodies, and marshlands within a wildland fire perimeter are included, unless otherwise directed by USFS Line Officers. If all areas are not included within a perimeter, it will be note in the metadata or within the attribute table field COMMENTS. Each fire perimeter consists of one feature, which may result in a multi-part polygon feature if the perimeter is non-contiguous (two or more spatially defined locations that are not adjacent). Note, prescribed fires are maintained in a separate database, the Forest Service Activity Tracking System (FACTS), and are not included in the Region 6 Wildland Fire Perimeter polygon dataset. If a prescribed fire escapes AND is declared a wildfire, an Individual Wildland Fire Report (form FS-5100-29) is required and the area burned after the escape is included in the wildland fire perimeter polygon dataset. The minimum mapping unit is 24 meters at 1:24,000 scale.