Keystone School

Built in 1890. Listed on the National Register of Historic Places in 1981.

From the record

“The Keystone School, on 3rd St. in Keystone, South Dakota, was listed on the National Register of Historic Places in 1981.”
Wikipedia article Keystone School (Keystone, South Dakota), CC BY-SA 4.0.

One of 59 National Register listings published here for Pennington County · listed in 1981 · category: Building · built in 1890.

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

The listing

What is counted as historic. The nomination lists 1 building as contributing to the listing.
Address. 3rd St., Keystone, 57751
When was it listed? February 1981
Category. building
Town. Keystone town
When was it built? 1890
National Register reference number. 81000577 - 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

377 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 377 fires within 5 miles of Keystone School between 1992 and 2020, burning about 14,697 acres in total. 95 started naturally. 16 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
Recreation and ceremony	113
Natural	95
Debris and open burning	63
Missing data/not specified/undetermined	54
Arson/incendiarism	16
Fireworks	11
Power generation/transmission/distribution	11
Equipment and vehicle use	7
Misuse of fire by a minor	2
Railroad operations and maintenance	2
Smoking	2
Other causes	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 2003	Natural	1.0 acres	Black Hills National Forest	GRIZZLY BEAR
8 September 2003	Natural	under an acre	South Dakota Wildland Fire Suppression	not named
8 September 2002	Natural	under an acre	Black Hills National Forest	BARETTA
8 September 1998	Natural	under an acre	South Dakota Wildland Fire Suppression	HUGO
7 September 2010	Recreation and ceremony	under an acre	Black Hills National Forest	650 ROAD
7 September 2003	Recreation and ceremony	under an acre	Black Hills National Forest	CALUMET DRAW
6 September 2001	Natural	under an acre	Mount Rushmore National Memorial	LONE PINE
6 September 2000	Natural	1.5 acres	Black Hills National Forest	BARRETTA

Every fire recorded in Pennington County

Mines and quarries near this property

10 of 155 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 155 workings within 5 miles of Keystone School: 102 past producers, 25 occurrences, 18 prospects, 6 producers. 6 still produce. What was taken out: Feldspar, Gold, Beryllium, Silver. 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
Black Hills Silica Sand Co Mine	Silica	Prospect
Bullion Mine Pennington County	Gold, Silver, Arsenic	Past Producer	1877, 1930
Cuyahoga Mine	Sulfur-Pyrite, Tin	Past Producer	1917
Dakota Quartz Plant	Stone, Feldspar	Producer
Dan Patch	Tantalum, Niobium (Columbium), Mica	Past Producer
Dan Patch Group	Feldspar, Mica, Beryllium, Tantalum, Zinc	Past Producer	1905
Edison Mine	Lithium, Mica, Feldspar, Beryllium, Tantalum	Past Producer	1917
Edison Mine	Tantalum, Niobium (Columbium)	Past Producer
Egyptian Group	Gold, Silver, Zinc	Past Producer	Chalcopyrite, Gold, Pyrrhotite, Silver, Sphalerite
Etta Spodumene Mine	Feldspar, Mica, Lithium, Tin, Beryllium, Tantalum, Tungsten	Past Producer	1898

Every working recorded in Pennington County

Storms near this property

56 since 1996

Regional context, not property-specific evidence. The National Weather Service names Keystone, the town this property stands in, in 56 storm reports between 1996 and 2024: 50 hail, 3 flash flood, 2 flood, 1 heavy rain. 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
May 2014	Hail	Keystone	$500,000	Hail damaged automobiles in Keystone.
August 2013	Hail	Keystone	$150,000	no account filed
October 2013	Flash Flood	Keystone	$100,000	Law enforcement reported water over Highway 16A/Winter Street in several places in Keystone due to flooding along Grizzly Bear Creek. Flooding was observed along Battle Creek near the city park. The USGS river gauge on Grizzly Bear Creek above Keystone reported a flow around 500 cfs and a height of 6.2 feet. Flows on Battle Creek were estimated at 1300 cfs.
July 2005	Flash Flood	Keystone	$10,000	Water from heavy rain accumulated 2 inches deep in the Rushmore Cave gift shop.
June 1996	Hail	Keystone	$2,000	no account filed
July 2018	Flood	Keystone	-	Runoff from heavy rain continued to cause flooding in and around Keystone. Water covered Grizzly Gulch Road, parts of Cemetery Road, and parking lots of businesses along Iron Mountain Road. Levels on Grizzly Bear Creek and Battle Creek quickly rose several feet.
May 2016	Hail	Keystone	-	Penny to quarter sized hail fell with the storm.
May 2016	Hail	Keystone	-	Hail to quarter size covered the ground several inches deep.
May 2016	Flood	Keystone	-	Grizzly Bear Creek covered Grizzly Gulch Road, making it impassible for several hours, and caused minor flooding in Keystone.
May 2016	Hail	Keystone	-	Hail to the size of quarters covered the ground from the Keystone Wye, the intersection of US Highways 16 and 16A, eastward along Highway 16.
July 2015	Hail	Keystone	-	A thunderstorm left a narrow path of quarter to half inch diameter hail, with a few stones to the size of quarters and half dollars, three to six inches deep along US Highway 16 at Beretta Road southwest of Rockerville. Snowplows were used to clear the highway.
July 2001	Hail	Keystone	-	Dime size hail fell for 10 minutes at Mt. Rushmore National Monument.
June 2024	Hail	Keystone	-	no account filed
August 2023	Hail	Keystone	-	no account filed
August 2023	Hail	Keystone	-	no account filed
August 2023	Hail	Keystone	-	no account filed
June 2022	Hail	Keystone	-	no account filed
July 2020	Hail	Keystone	-	no account filed
July 2019	Hail	Keystone	-	no account filed
September 2018	Hail	Keystone	-	no account filed
August 2016	Hail	Keystone	-	no account filed
July 2016	Hail	Keystone	-	no account filed
June 2015	Hail	Keystone	-	no account filed
July 2015	Hail	Keystone	-	no account filed
July 2015	Hail	Keystone	-	no account filed
June 2015	Hail	Keystone	-	no account filed
June 2014	Hail	Keystone	-	no account filed
July 2014	Hail	Keystone	-	no account filed
July 2014	Hail	Keystone	-	no account filed
July 2013	Hail	Keystone	-	no account filed
July 2011	Hail	Keystone	-	no account filed
July 2009	Hail	Keystone	-	no account filed
June 2007	Hail	Keystone	-	no account filed
June 2005	Hail	Keystone	-	no account filed
July 2005	Hail	Keystone	-	no account filed
July 2004	Hail	Keystone	-	no account filed
September 2004	Hail	Keystone	-	no account filed
June 2003	Hail	Keystone	-	no account filed
July 2003	Heavy Rain	Keystone	-	no account filed
July 2003	Hail	Keystone	-	no account filed
July 2003	Hail	Keystone	-	no account filed
August 2002	Hail	Keystone	-	no account filed
August 2002	Hail	Keystone	-	no account filed
August 2002	Hail	Keystone	-	no account filed
June 2001	Hail	Keystone	-	no account filed
July 2001	Flash Flood	Keystone	-	no account filed
August 2001	Hail	Keystone	-	no account filed
July 2001	Hail	Keystone	-	no account filed
July 2000	Hail	Keystone	-	no account filed
June 1999	Hail	Keystone	-	no account filed
June 1999	Hail	Keystone	-	no account filed
June 1999	Hail	Keystone	-	no account filed
June 1997	Hail	Keystone	-	no account filed
July 1996	Hail	Keystone	-	no account filed
June 1996	Hail	Keystone	-	no account filed
June 1996	Hail	Keystone	-	no account filed

Every storm recorded in Pennington County

Map coverage status

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.

Listed places nearby

6 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
Keystone Trading Company Store	under 500 feet	1982
Lewis Byron House	0.6 miles	1982
Mount Rushmore National Memorial	2.2 miles	1966
Otho Mining District	4.0 miles	2004
Burlington and Quincy High Line Hill City to Keystone Branch	4.1 miles	2003
Civilian Conservation Corp Camp F-10	4.1 miles	2004

Sources for this property

National Archives record	The nomination case file for reference 81000577 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Pennington County	All 59 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.