Iris, Montana

Matched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.

• 1903 USGS Bonner quadrangle1:125000, 4 printings
• 1947 USGS Butte quadrangle1:250000, 2 printings
• 1958 USGS Butte quadrangle1:250000, 5 printings
• 1959 USGS Ravenna quadrangle1:62500, 2 printings
• 1960 USGS Butte quadrangle1:250000
• 1962 USGS Butte quadrangle1:250000
• 1984 USGS Missoula East quadrangle1:100000
• 1989 USGS Iris Point quadrangle1:24000
• 1999 USGS Iris Point quadrangle1:24000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 185 fires within 5 miles of Iris between 1992 and 2020, burning about 23,538 acres in total. 62 started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Settlements close enough to share some of these fires:

• Clinton

Every fire recorded in Missoula County

Regional context, not property-specific evidence. The federal mineral resources record lists 29 workings within 5 miles of Iris: 20 past producers, 3 occurrences, 3 unknowns, 2 prospects. 1 still produces. What was taken out: Copper, Silver, Gold, Silver, Barium-Barite. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Every working recorded in Missoula County

The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.

This settlement is recorded in the Geographic Names Information System as feature 785307. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.

Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.

Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.