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Wildfire perimeter

Swift River

Burned 91,624 acres (371 km², 143.2 mi²) in AK during 2022.

IRWIN {143F43AC-EB48-4… DVF AK fire history 2022 fires
Acres burned
91,624
371 km²
Year
2022
FIRE_YEAR field
State
AK
POOState region
Reporting agency
DVF
NIFC source
01 Perimeter shape

The fire's footprint

Simplified polygon (≤0.001° tolerance). 5 rings. Centroid 61.482°, -154.780°.

NW: 61.598°N, 155.237°W SE: 61.365°N, 154.322°W

About this perimeter

Sourced from the NIFC InterAgency Fire Perimeter History ArcGIS service. Polygon geometry has been simplified to ≤0.001° tolerance for storage; original full-fidelity perimeters are at fire.nifc.gov. We track all 75,044 documented historical perimeters; this detail view renders the top 1,000 by acreage. The shape above is rendered fully server-side with no JavaScript or external mapping library — it preserves the polygon's shape but not its precise geographic placement on a basemap.