BlockBefore

Big Oak Flat, California

28 topographic sheets cover this place, the earliest surveyed in 1893 and the latest in 1994. It stands in the Groveland census division. It lies in ZIP code area 95305. It lies near Tip Top Peak. The Survey maps it on the Moccasin quadrangle. It stands 2,838 feet above sea level.

Big Oak Flat within Tuolumne County

Then and now

1893 to 1994

The same ground, surveyed 101 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

Topographic sheet of Big Oak Flat, surveyed 1994
Topographic sheet of Big Oak Flat, surveyed 1893

On record in Big Oak Flat

Buildings and businesses the archive holds for this place. Each opens its own page, with the source record it came from.

On the National Register 1 record

Topographic sheets covering this place

12 surveys from 28 printed sheets

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.

Fires near this place

284 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 284 fires within 5 miles of Big Oak Flat between 1992 and 2020, burning about 13,369 acres in total. 18 started naturally. 25 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.

Reported cause Fires
Missing data/not specified/undetermined108
Equipment and vehicle use49
Debris and open burning48
Arson/incendiarism25
Natural18
Misuse of fire by a minor12
Recreation and ceremony10
Smoking6
Power generation/transmission/distribution6
Firearms and explosives use1
Fireworks1

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

DateCause SizeReported by Name on the report
9 September 1999Naturalunder an acreCentral California DistrictLIGHTNING 134
9 September 1999Naturalunder an acreCentral California DistrictLIGHTNING 26
9 September 1999Naturalunder an acreTuolumne-Calaveras UnitLIGHTNING#26
8 September 2004Missing data/not specified/undeterminedunder an acreCentral California DistrictPROVOST
8 September 1997Arson/incendiarism2.0 acresCentral California DistrictMARSHES
8 September 1997Arson/incendiarismunder an acreCentral California DistrictRAILROAD
8 September 1997Arson/incendiarismunder an acreTuolumne-Calaveras UnitPRIEST #3
7 September 1997Arson/incendiarism470 acresCentral California DistrictPREIST II

Settlements close enough to share some of these fires:

Every fire recorded in Tuolumne County

Mines and quarries near this place

10 of 163 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 163 workings within 5 miles of Big Oak Flat: 56 occurrences, 47 past producers, 30 unknowns, 22 producers. 22 still produce. What was taken out: Gold, Silver, Gold, Silver, Sand and Gravel, Construction. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Where SiteCommodity StatusRecorded
Ashley PropertyAsbestosProspect
Big Oak Flat No. 1Gold, Silver, Zinc, Lead, CopperPast ProducerChalcopyrite, Copper, Galena, Gold, Sphalerite
La GuriaGold, Lead, Copper, SilverProspect
Pine Mountain QuarryStone, Crushed/BrokenProducer
Reported OccuranceGypsum-AnhydriteOccurrence
GroupGold, LeadPast ProducerGalena, Gold, Pyrite
Groveland-Moccasin-JacksonvilleGold, SilverProducer
Jack LodeGold, SilverProducer
Little WonderGold, LeadPast ProducerGalena, Gold, Pyrite
Moccasin CreekCopperOccurrenceChalcopyrite

Every working recorded in Tuolumne County

Nearest settlements

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

Map PlaceDistance Sheets
Priest1.0 miles28
Groveland1.7 miles30
Moccasin2.4 miles28
Second Garrotte3.2 miles30
Buchanan7.3 miles29
Algerine9.0 miles28
Buckhorn Estates9.0 miles27
Tuolumne9.5 miles29

Elsewhere

Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.

Wikidata item Q136486770The structured record the population and elevation above come from. Public domain (CC0).

Provenance

This settlement is recorded in the Geographic Names Information System as feature 1658056. 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.