Helmville, 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.

• 1889 USGS Helena quadrangle1:250000
• 1893 USGS Helena quadrangle1:250000, 2 printings
• 1899 USGS Helena quadrangle1:250000
• 1903 USGS Helena quadrangle1:250000, 4 printings
• 1947 USGS Butte quadrangle1:250000, 2 printings
• 1958 USGS Butte quadrangle1:250000, 5 printings
• 1960 USGS Butte quadrangle1:250000
• 1962 USGS Butte quadrangle1:250000
• 1968 USGS Helmville quadrangle1:24000, 2 printings
• 1975 USGS Elliston quadrangle1:100000
• 2001 USGS Helmville quadrangle1:24000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 12 fires within 5 miles of Helmville between 1992 and 2020, burning about 6 acres in total. 6 started naturally. 1 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.

Every fire recorded in Powell County

Regional context, not property-specific evidence. The federal mineral resources record lists 30 workings within 5 miles of Helmville: 15 past producers, 9 occurrences, 6 unknowns. None of them still produces. What was taken out: Gold, Tungsten, Lead, Silver. 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 Powell County

Regional context, not property-specific evidence. The National Weather Service names Helmville in 7 storm reports between 1996 and 2023: 7 hail. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.

Every storm recorded in Powell 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 784755. 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.

Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.