BlockBefore

South Trona, California

23 topographic sheets cover this place, the earliest surveyed in 1915 and the latest in 1993. It stands in the Searles Valley census division. It lies in ZIP code area 93562. The Survey maps it on the Westend quadrangle.

South Trona within San Bernardino County

Then and now

1915 to 1993

The same ground, surveyed 78 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

Topographic sheet of South Trona, surveyed 1993
Topographic sheet of South Trona, surveyed 1915

Topographic sheets covering this place

10 surveys from 23 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

5 since 1995

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 5 fires within 5 miles of South Trona between 1995 and 2020, burning about 16 acres in total. None 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.

Reported cause Fires
Missing data/not specified/undetermined5

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
26 August 2006Missing data/not specified/undeterminedunder an acreCalifornia Department of Forestry & Fire Protectionnot named
19 July 1995Missing data/not specified/undetermined15 acresCalifornia Desert DistrictTECATE
27 May 2020Missing data/not specified/undeterminedunder an acreCalifornia Desert DistrictPOISON CANYON
27 April 2006Missing data/not specified/undeterminedunder an acreCalifornia Desert DistrictTRONA 2
10 March 2006Missing data/not specified/undeterminedunder an acreCalifornia Desert DistrictTRONA

Settlements close enough to share some of these fires:

Every fire recorded in San Bernardino County

Mines and quarries near this place

10 of 21 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 21 workings within 5 miles of South Trona: 9 occurrences, 6 producers, 4 past producers, 2 unknowns. 6 still produce. What was taken out: Gold, Salt, Silver, Copper. 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
DrednaughSilver, Gold, CopperUnknown
Lone Wolf ComplexCopper, Iron, Silver, Gold, Silica, SulfurPast Producer1938
Searles LakeSodium, Sodium Carbonate, Phosphorus-Phosphates, Soda Ash, Boron-Borates, Potassium, Sodium Sulfate, LithiumProducer1863, 1873
Searles LakeBromine, Tungsten, LithiumOccurrenceBrine
Searles LakeTungstenOccurrence
Searles LakePotassium, Sodium, Salt, Lithium, Tungsten, Boron-BoratesUnknownSurface
Un-Named ProspectCopper, Iron, Silica, SulfurOccurrence1939
Argus EvaporatorsBoron-BoratesProducer
Borosolvay PitSand and Gravel, ConstructionPast Producer
East Gravel Pit No. 2Sand and Gravel, ConstructionPast Producer

Every working recorded in San Bernardino 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
Westend0.7 miles23
Borosolvay1.4 miles23
Argus2.2 miles23
Trona3.5 miles24
Searles Valley3.6 miles24
Pioneer Point5.2 miles24
Skytop5.5 miles23
Spangler11.9 miles23

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 Q122552440The 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 1661483. 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.