Walkermine, California

The same ground, surveyed 103 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1891 1994

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.

• 1891 USGS Downieville quadrangle1:125000
• 1893 USGS Downieville quadrangle1:125000
• 1895 USGS Downieville quadrangle1:125000
• 1896 USGS Downieville quadrangle1:125000
• 1897 USGS Downieville quadrangle1:125000, 7 printings
• 1937 USGS Blairsden quadrangle1:48000
• 1943 USGS Blairsden quadrangle1:62500, 3 printings
• 1956 USGS Blairsden quadrangle1:62500, 4 printings
• 1958 USGS Chico quadrangle1:250000, 4 printings
• 1960 USGS Chico quadrangle1:250000
• 1972 USGS Mt. Ingalls quadrangle1:24000
• 1979 USGS Portola quadrangle1:100000, 2 printings
• 1994 USGS Mount Ingalls quadrangle1:24000, 2 printings

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 95 fires within 5 miles of Walkermine (historical) between 1992 and 2017, burning about 94 acres in total. 85 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.

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:

• Lovejoy (historical)
• Argentine (historical)
• Greenhorn
• Bells Bar (historical)
• Chases (historical)
• Cromberg

Every fire recorded in Plumas County

Regional context, not property-specific evidence. The federal mineral resources record lists 35 workings within 5 miles of Walkermine (historical): 12 unknowns, 11 past producers, 9 occurrences, 2 prospects. 1 still produces. What was taken out: Gold, Copper, Silver, Silver, Gold. 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 Plumas 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 1666683. 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.