Petrolia, New York

The same ground, surveyed 61 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1925 1986

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.

• 1925 USGS Belmont quadrangle1:62500, 4 printings
• 1939 USGS Belmont quadrangle1:62500, 2 printings
• 1960 USGS Buffalo quadrangle1:250000
• 1962 USGS Buffalo quadrangle1:250000, 2 printings
• 1965 USGS Allentown quadrangle1:24000
• 1967 USGS Buffalo quadrangle1:250000
• 1973 USGS Buffalo quadrangle1:250000
• 1986 USGS Olean quadrangle1:100000, 2 printings

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 67 fires within 5 miles of Petrolia between 1995 and 2020, burning about 78 acres in total. 12 started naturally. 6 were 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:

• Allentown
• Vosburg
• Inavale
• Knight Creek
• Norton Summit
• Pikeville

Every fire recorded in Allegany County

Regional context, not property-specific evidence. Museums hold 402 specimens collected within 10 miles of Petrolia between 1883 and 1967: 381 Animalia, 9 Fungi, 9 Plantae, 2 Unrecorded, 1 Chromista. 12 distinct Species records are shown. Collected by A. Hazzard, A.B. Seymour, Arthur Wright and others. Each is a physical object with a catalogue number, and each entry opens the museum's record. This is what was collected and kept, not a survey of what lives here - nothing can be concluded from a species being absent.

Image	Species	Year	Collected by	Where, as recorded
	Puccinia veratri (DC.) Duby	1931	H. H. Whetzel	Wooded hillside along main highway
	Clitocybe cartilaginea (Bull.) Bres.	1934	W. F. Wilson
	Lepiota procera (Scop.) Gray	1935	W. F. Wilson
	Gloeosporium Desm. & Mont., 1849	1883	A.B. Seymour	Granville.
	Clavaria fusiformis Sowerby	1885	not recorded	Peat Moss, Brookton
	Usnea Dill. ex Adans., 1763	1888	De Alton Saunders	Vandermark Creek
	Chordeiles minor (J.R.Forster, 1771)	1898	Harry Wilber	Scio
	Dolichonyx oryzivorus (Linnaeus, 1758)	1898	Harry Wilber	Scio
	Megaceryle alcyon (Linnaeus, 1758)	1898	C. H. Munson	Scio
	Sturnella magna (Linnaeus, 1758)	1918	Arthur Wright	Scio
	Turdus migratorius Linnaeus, 1766	1919	C. H. Munson	Scio
	Albugo tragopogonis (Pers.) Gray	1920	Shaughnessy, E. T.	Wellsville

All 402 specimens within 10 miles, at the Global Biodiversity Information Facility.

Regional context, not property-specific evidence. The federal mineral resources record lists 1 working within 5 miles of Petrolia: 1 past producer. None of them still produces. What was taken out: Salt. 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 Allegany County

Regional context, not property-specific evidence. The National Weather Service names Petrolia in 2 storm reports between 2011 and 2017: 2 thunderstorm wind. 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 Allegany 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 960257. 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.

Specimens. Global Biodiversity Information Facility (GBIF), https://www.gbif.org/. Only records licensed CC0 or CC BY are used. Records licensed CC BY-NC are excluded because this site carries advertising. Images are checked individually and any whose licence is non-commercial, no-derivatives or unreadable is refused.

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.