Bolam, California

The same ground, surveyed 115 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1886 2001

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.

• 1886 USGS Shasta quadrangle1:250000, 3 printings
• 1894 USGS Shasta quadrangle1:250000, 8 printings
• 1934 USGS Macdoel quadrangle1:96000
• 1941 USGS Macdoel quadrangle1:125000, 3 printings
• 1948 USGS Weed quadrangle1:250000, 2 printings
• 1950 USGS Weed quadrangle1:250000
• 1954 USGS The Whaleback quadrangle1:62500, 3 printings
• 1958 USGS Weed quadrangle1:250000, 3 printings
• 1963 USGS Weed quadrangle1:250000
• 1979 USGS Yreka quadrangle1:100000
• 1986 USGS The Whaleback quadrangle1:24000
• 2001 USGS The Whaleback quadrangle1:24000, 2 printings

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 87 fires within 5 miles of Bolam between 1992 and 2020, burning about 342 acres in total. 42 started naturally. 3 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:

• Graham (historical)
• Andesite
• Cougar
• Hotlum
• Lake Shastina
• Pomeroy (historical)

Every fire recorded in Siskiyou County

Regional context, not property-specific evidence. The federal mineral resources record lists 11 workings within 5 miles of Bolam: 5 occurrences, 4 producers, 2 unknowns. 4 still produce. What was taken out: Stone, Crushed/Broken, Nickel, Gemstone, Copper, Molybdenum. 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 Siskiyou 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 1658098. 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.