A National Historic Landmark. Listed on the National Register of Historic Places in 1997.
One of 6 National Register listings published here for San Juan County · listed in 1997 · category: District · a National Historic Landmark.
Sources: the case file at the National Archives · the National Register database, National Park Service
Regional context, not property-specific evidence. The federal wildfire occurrence database lists 5 fires within 5 miles of Silverton Historic District (Boundary Increase) between 1994 and 2013, burning about 1 acre in total. 3 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.
| Reported cause | Fires |
|---|---|
| Natural | 3 |
| Missing data/not specified/undetermined | 1 |
| Recreation and ceremony | 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 |
|---|---|---|---|---|
| 6 July 2003 | Natural | under an acre | San Juan National Forest | GRAND TURK |
| 29 July 1994 | Recreation and ceremony | under an acre | Southwest District, Montrose | MIDDLETON |
| 28 June 2013 | Natural | under an acre | San Juan National Forest | WHITEHEAD |
| 23 June 2004 | Natural | 1.0 acres | Tres Rios Field Office | DEER PARK |
| 2 June 2011 | Missing data/not specified/undetermined | under an acre | Colorado State Forest Service-State Headquarters | SILVERTON |
Regional context, not property-specific evidence. The federal mineral resources record lists 280 workings within 5 miles of Silverton Historic District (Boundary Increase): 104 past producers, 67 unknowns, 63 producers, 42 occurrences. 64 still produce. What was taken out: Zinc, Tungsten, Lead, Gold. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Anglo-Saxon | Tungsten, Fluorine-Fluorite, Gold, Silver | Prospect | ||
| Antiperiodic | Silver, Gold, Lead | Producer | Cerussite, Galena | |
| Aspen | Lead, Silver, Copper, Zinc | Producer | Chalcopyrite, Galena, Pyrite, Silver, Sphalerite, Tetrahedrite | |
| Aspen Mine | Lead, Zinc, Copper, Gold, Silver | Past Producer | ||
| Ayman Mine | Lead, Copper, Gold, Silver | Past Producer | ||
| Aztec | Gold, Silver, Zinc, Lead | Past Producer | ||
| Belcer | Zinc, Lead, Silver, Copper | Producer | Barite, Chalcopyrite, Galena, Pyrite, Quartz, Sphalerite, Tetrahedrite | |
| Belcher | Lead, Copper, Silver, Zinc | Past Producer | ||
| Big Giant | Copper, Silver, Lead | Producer | Vein | |
| Black Hawk Et Al | Lead, Zinc, Silver, Copper | Producer | Galena |
Regional context, not property-specific evidence. The National Weather Service names Silverton, the town this property stands in, in 6 storm reports between 1996 and 2021: 4 flash flood, 1 lightning, 1 debris flow. The reports record 4 injuries. 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 |
|---|---|---|---|---|
| August 1996 | Lightning | Silverton | 4 hurt | no account filed |
| August 1999 | Flash Flood | Silverton | $10,000 | no account filed |
| July 2007 | Flash Flood | Silverton | $5,000 | Heavy convective rainfall concentrated just north of the La Plata and San Juan County line produced a massive flow of water, rock, and mud which traveled across the Durango to Silverton Narrow Gage Railroad track and dammed up the Animas River about one mile north of Needleton. Initially, the entire river channel was dammed. The river bed at that location was raised 8 feet on the east side of the channel and remained blocked on the west side of the channel. The debris flow covered about 250 feet of railroad track. The peak depth of debris on the railroad track was measured at close to 45 feet. The railroad track did not sustain significant damage, because the lowest several feet of debris on the track consisted primarily of mud. On top of the mud was a lot of rock material with some trees mixed in it. |
| August 1999 | Flash Flood | Silverton | $2,000 | no account filed |
| July 2021 | Debris Flow | Silverton | - | A debris flow occurred as a result of heavy rain over Ophir Pass in the Southwest San Juan Mountains. Social media footage showed a combination of rock and mud across the pass with cars having to turn around as a result of the debris flow. |
| July 1999 | Flash Flood | Silverton | - | no account filed |
No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.
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.
| Photograph | Property | Distance | Listed |
|---|---|---|---|
 | Shenandoah-Dives Mill | 0.8 miles | 2000 |
 | Silverton Historic District | 1.6 miles | 1966 |
| Martin Mining Complex | 6.1 miles | 2004 |
| National Archives record | The nomination case file for reference 97000247 in Record Group 79. |
| San Juan County | All 6 listed properties in this county. |
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