Del Rosa, California

The same ground, surveyed 97 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1899 1996

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.

• 1899 USGS Redlands quadrangle1:62500
• 1901 USGS Redlands quadrangle1:62500, 9 printings
• 1901 USGS Southern California Sheet No. 1 quadrangle1:250000, 6 printings
• 1904 USGS Southern California Sheet No. 1 quadrangle1:250000, 2 printings
• 1953 USGS Harrison Mtn. quadrangle1:24000, 2 printings
• 1953 USGS San Bernardino quadrangle1:250000, 2 printings
• 1954 USGS Redlands quadrangle1:62500, 3 printings
• 1956 USGS San Bernardino quadrangle1:250000
• 1957 USGS San Bernardino quadrangle1:250000
• 1958 USGS San Bernardino quadrangle1:250000
• 1959 USGS San Bernardino quadrangle1:250000
• 1966 USGS San Bernardino quadrangle1:250000
• 1967 USGS Harrison Mtn quadrangle1:24000
• 1967 USGS Harrison Mtn. quadrangle1:24000, 4 printings
• 1975 USGS Harrison Mtn. quadrangle1:24000
• 1982 USGS San Bernardino quadrangle1:100000
• 1996 USGS Harrison Mountain quadrangle1:24000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 1,291 fires within 5 miles of Del Rosa between 1992 and 2020, burning about 106,205 acres in total. 13 started naturally. 194 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:

• West Highlands
• Amber Hills
• Patton
• Valencia
• Arrowhead
• Arrowhead Springs

Every fire recorded in San Bernardino County

Regional context, not property-specific evidence. The federal mineral resources record lists 12 workings within 5 miles of Del Rosa: 6 past producers, 4 producers, 1 unknown, 1 prospect. 4 still produce. What was taken out: Sand and Gravel, Construction, Limestone, Dimension, Limestone, General, Geothermal. 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 San Bernardino County

Regional context, not property-specific evidence. The National Weather Service names Del Rosa in 1 storm report in 2023: 1 heavy rain. 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 San Bernardino 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 1660535. 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.