Copperopolis Armory

Listed on the National Register of Historic Places in 1997. 10 historic topographic surveys show this location, the earliest from 1916.

From the record

“The Copperopolis Armory is a Civil War armory located at 695 Main St. in Copperopolis, California. The brick Greek Revival building was constructed in 1864 to house the Union Guard of Copperopolis, the town's regiment of the Union Army.”
Wikipedia article Copperopolis Armory, CC BY-SA 4.0.

One of 16 National Register listings published here for Calaveras County · listed in 1997 · category: Building.

Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

The listing

What is counted as historic. The nomination lists 1 building as contributing to the listing.
Address. 695 Main St., Copperopolis, 95228
When was it listed? December 1997
Category. building
Census division. Angels City
Architectural style. Greek Revival architecture
National Register reference number. 97001588 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

314 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 314 fires within 5 miles of Copperopolis Armory between 1992 and 2020, burning about 7,893 acres in total. 10 started naturally. 13 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
Equipment and vehicle use	120
Missing data/not specified/undetermined	95
Debris and open burning	43
Arson/incendiarism	13
Smoking	11
Natural	10
Power generation/transmission/distribution	9
Misuse of fire by a minor	8
Fireworks	2
Recreation and ceremony	2
Firearms and explosives use	1

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Date	Cause	Size	Reported by	Name on the report
9 September 1999	Natural	under an acre	Central California District	LIGHTNING 15
7 September 1993	Equipment and vehicle use	under an acre	Tuolumne-Calaveras Unit	WOOSTER
6 September 2013	Equipment and vehicle use	1.5 acres	Tuolumne-Calaveras Unit	QUAIL
5 September 1994	Missing data/not specified/undetermined	3.0 acres	Tuolumne-Calaveras Unit	BRITCHEN
3 September 2014	Equipment and vehicle use	1.6 acres	Tuolumne-Calaveras Unit	BUCKBOARD
29 September 1995	Missing data/not specified/undetermined	under an acre	Tuolumne-Calaveras Unit	COPPER #2
29 September 1995	Missing data/not specified/undetermined	1.0 acres	Tuolumne-Calaveras Unit	COPPER #1
26 September 2004	Equipment and vehicle use	under an acre	Central California District	HATLEY

Every fire recorded in Calaveras County

Mines and quarries near this property

10 of 156 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 156 workings within 5 miles of Copperopolis Armory: 58 past producers, 39 occurrences, 37 unknowns, 17 producers. 18 still produce. What was taken out: Gold, Copper, Chromium, Asbestos. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Site	Commodity	Status	Recorded
Big Seven	Gold, Zinc, Lead	Past Producer	Galena, Gold, Pyrite, Sphalerite
Deposit	Limestone, Dimension	Occurrence
Donner Mine	Gold, Silver, Copper	Past Producer	Underground
Empire Mine	Gold, Copper, Silver	Occurrence
Keystone Union	Copper, Gold, Lead, Silver	Past Producer	Underground
Melones & Morgan	Gold, Bismuth	Occurrence
Mountain King	Gold, Silver, Copper, Lead	Past Producer	Gold
Nassau	Copper, Zinc, Silver, Gold	Past Producer	Chalcopyrite, Pyrite, Sphalerite
Nassau	Copper, Gold, Silver, Zinc	Unknown
North Keystone	Copper, Gold, Silver	Past Producer	Underground

Every working recorded in Calaveras County

Storms near this property

5 since 2023

Regional context, not property-specific evidence. The National Weather Service names Copperopolis, the town this property stands in, in 5 storm reports between 2023 and 2025: 2 flash flood, 2 flood, 1 thunderstorm wind. 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.

When	Event	Place named	Harm	What the report says
March 2023	Flash Flood	Copperopolis	$20,000	Calaveras County Sheriff Dispatch reported significant roadway flooding with two houses flooded in Copperopolis.
December 2025	Flood	Copperopolis	-	California Highway Patrol reported a minor rock/mud slide impacting westbound lanes at Obrynes Ferry Road and Duchess Drive.
January 2023	Thunderstorm Wind	Copperopolis	-	There was a gust of 65 mph measured at 2ENE Carson Hill.
March 2023	Flash Flood	Copperopolis	-	Calaveras County Public Works reported the closure of Cooper Cove Drive between Black Creek Drive and Cheyenne Road in Copperopolis due to severe road damage by flooding.
March 2023	Flood	Copperopolis	-	The California Highway Patrol reported roadway flooding in both lanes of traffic along California Highway 4 at Bonanza Mine Way.

Every storm recorded in Calaveras County

Maps showing this location

10 surveys

United States Geological Survey topographic sheets whose coverage includes this point. Matched by taking the coordinate the National Park Service records for this property, then testing that coordinate against the published boundary of every sheet.

1916 USGS Copperopolis quadrangle1:62500 - 3 printings
1942 USGS Copperopolis quadrangle1:62500
1947 USGS San Jose quadrangle1:250000
1954 USGS Copperopolis quadrangle1:62500
1956 USGS San Jose quadrangle1:250000
1962 USGS Copperopolis quadrangle1:24000 - 5 printings
1962 USGS Copperopolis quadrangle1:62500 - 2 printings
1962 USGS San Jose quadrangle1:250000 - 4 printings
1966 USGS San Jose quadrangle1:250000
1994 USGS Oakdale quadrangle1:100000 - 2 printings

Listed places nearby

3 within 8 miles

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.

Property	Distance	Listed
Reed's Store	under 500 feet	1992
Honigsberger Store	under 500 feet	1992
Copperopolis Congregational Church	0.3 miles	1997

Sources for this property

National Archives record	The nomination case file for reference 97001588 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Calaveras County	All 16 listed properties in this county.

Provenance

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.