Built in 1839. Listed on the National Register of Historic Places in 1970. 8 historic topographic surveys show this location, the earliest from 1900.
From the record
“Fort Ontario is a historic bastion fort used by British and American forces, located in the City of Oswego in Oswego County, New York, US. Fort Ontario is located on the east side of the Oswego River on high ground overlooking Lake Ontario.”
Wikipedia article Fort Ontario, CC BY-SA 4.0.
One of 93 National Register listings published here for Oswego County · listed in 1970 · category: Site · built in 1839.
National Register reference number. 70000426 - assigned by the National Park Service when the property was listed.
Fires near this property
126 since 2001
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 126 fires within 5 miles of Fort Ontario
between 2001 and 2020, burning about 71 acres in total. 3 started naturally. 20 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.
Reported cause
Fires
Missing data/not specified/undetermined
79
Arson/incendiarism
20
Debris and open burning
15
Equipment and vehicle use
6
Natural
3
Smoking
3
The most recent of
them, most recent first, with the day each was reported and the service
that recorded it.
Regional context, not property-specific
evidence. The federal mineral resources record lists
2 workings within 5 miles of Fort Ontario: 1 producer, 1 past producer.
1 still produces. What was taken out: Sand and Gravel, Construction. Distance is straight-line from the
map coordinates, so a quarry counted here may appear on a neighbouring
settlement's page as well.
Regional context, not property-specific
evidence. The National Weather Service names
Oswego, the town this property stands in, in 33 storm reports between 1994 and 2025: 24 thunderstorm wind, 7 hail, 1 lightning, 1 flash flood.
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.
United States Geological Survey topographic
sheets whose coverage includes this point. Matched by taking the middle of the area the National Park Service maps for this listing, then
testing that coordinate against the published boundary of every sheet.
Other National Register properties close
enough to walk or drive between, ordered by distance from this one. Both
positions come from the same geocoding pass that matched these properties
to their map sheets.
Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
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.
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