Acorn, California

The same ground, surveyed 84 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1905 1989

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.

• 1905 USGS Lompoc quadrangle1:125000, 7 printings
• 1942 USGS Lompoc quadrangle1:62500, 2 printings
• 1942 USGS Lompoc quadrangle1:125000
• 1943 USGS Lompoc quadrangle1:125000
• 1947 USGS Lompoc quadrangle1:24000
• 1947 USGS Lompoc quadrangle1:62500, 2 printings
• 1948 USGS Santa Maria quadrangle1:250000, 2 printings
• 1956 USGS Santa Maria quadrangle1:250000, 2 printings
• 1957 USGS Santa Maria quadrangle1:250000
• 1958 USGS Santa Maria quadrangle1:250000
• 1959 USGS Lompoc quadrangle1:62500, 2 printings
• 1959 USGS Lompoc quadrangle1:24000, 6 printings
• 1962 USGS Santa Maria quadrangle1:250000
• 1982 USGS Santa Maria quadrangle1:100000, 2 printings
• 1989 USGS Santa Maria quadrangle1:250000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 59 fires within 5 miles of Acorn (historical) between 2005 and 2020, burning about 3,514 acres in total. None started naturally. 2 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:

• Ellwood Estates
• Lompoc
• Lompoc Village
• Mesa Oaks
• Mission Hills
• Mission La Purisima (historical)

Every fire recorded in Santa Barbara County

Regional context, not property-specific evidence. The federal mineral resources record lists 19 workings within 5 miles of Acorn (historical): 11 past producers, 5 producers, 2 occurrences, 1 unknown. 5 still produce. What was taken out: Diatomite, Sand and Gravel, Construction, Stone, Crushed/Broken, Limestone, Dimension. 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 Santa Barbara County

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

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.

This settlement is recorded in the Geographic Names Information System as feature 1871686. 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.