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Wildfire perimeter

GLASS MOUNTAIN

Burned 146,968 acres (595 km², 229.6 mi²) in CA during 1910.

IRWIN unkn-10000-468… USFS CA fire history 1910 fires
Acres burned
146,968
595 km²
Year
1910
FIRE_YEAR field
State
CA
POOState region
Reporting agency
USFS
NIFC source
01 Perimeter shape

The fire's footprint

Simplified polygon (≤0.001° tolerance). 2 rings. Centroid 41.327°, -121.513°.

NW: 41.586°N, 121.666°W SE: 41.068°N, 121.361°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.