Riordan, Arizona

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 San Francisco Mtns quadrangle1:250000
• 1891 USGS San Francisco Mtns quadrangle1:250000
• 1894 USGS San Francisco Mtns quadrangle1:250000, 5 printings
• 1899 USGS San Francisco Mtns quadrangle1:250000
• 1908 USGS Flagstaff quadrangle1:125000
• 1912 USGS Flagstaff quadrangle1:125000, 5 printings
• 1947 USGS Flagstaff quadrangle1:250000, 2 printings
• 1954 USGS Flagstaff quadrangle1:250000, 3 printings
• 1958 USGS Flagstaff quadrangle1:250000
• 1960 USGS Flagstaff quadrangle1:250000, 2 printings
• 1962 USGS Flagstaff quadrangle1:250000
• 1962 USGS Flagstaff West quadrangle1:24000, 5 printings
• 1982 USGS Flagstaff quadrangle1:100000, 2 printings

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 480 fires within 5 miles of Riordan between 1992 and 2020, burning about 672 acres in total. 111 started naturally. 9 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:

• Fort Tuthill
• Cogdill Center
• East Flagstaff
• Flagstaff
• Kachina Village
• Mountainaire

Every fire recorded in Coconino County

Regional context, not property-specific evidence. The federal mineral resources record lists 27 workings within 5 miles of Riordan: 13 past producers, 11 unknowns, 2 occurrences, 1 producer. 1 still produces. What was taken out: Volcanic Materials, Pumice, Clay, Perlite. 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 Coconino 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 42729. 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.