Porterville, Oregon

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.

• 1901 USGS Sumpter quadrangle1:125000, 4 printings
• 1955 USGS Canyon City quadrangle1:250000, 4 printings
• 1959 USGS Canyon City quadrangle1:250000, 2 printings
• 1972 USGS Granite quadrangle1:24000, 2 printings
• 1987 USGS Bates quadrangle1:100000
• 1995 USGS Granite quadrangle1:24000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 122 fires within 5 miles of Porterville (historical) between 1992 and 2020, burning about 123 acres in total. 106 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:

• Granite

Every fire recorded in Grant County

Regional context, not property-specific evidence. The federal mineral resources record lists 171 workings within 5 miles of Porterville (historical): 55 occurrences, 55 prospects, 49 past producers, 9 producers. 9 still produce. What was taken out: Gold, Silver, Gold, Silver, Chromium. 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 Grant 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 1147914. 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.