Bayhorse

Listed on the National Register of Historic Places in 1976.

From the record

“Bayhorse is a ghost town in Custer County, Idaho, United States, founded in 1877, though active development of the town did not begin until 1880. Bayhorse was once a thriving mining town, principally supported by large nearby silver deposit.”
Wikipedia article Bayhorse, Idaho, CC BY-SA 4.0.

One of 33 National Register listings published here for Custer County · listed in 1976 · category: Building.

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

The listing

Address. S of Challis off U.S. 93, Challis, 83226
When was it listed? March 1976
Category. building
Census division. Challis
National Register reference number. 76000671 - 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

25 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 25 fires within 5 miles of Bayhorse between 1992 and 2020, burning about 178 acres in total. 13 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	13
Recreation and ceremony	5
Missing data/not specified/undetermined	4
Debris and open burning	2
Equipment and vehicle 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
7 August 2016	Natural	under an acre	Salmon-Challis National Forest	BULL
4 August 1997	Debris and open burning	under an acre	Salmon-Challis National Forest	BAYHORSE
27 August 2020	Natural	under an acre	Idaho Falls District	PACIFIC
25 August 1995	Natural	under an acre	Salmon-Challis National Forest	HAPPY HOLLOW
2 August 1996	Natural	under an acre	Salmon-Challis National Forest	BOULDER
12 August 1993	Natural	under an acre	Salmon-Challis National Forest	not named
1 August 1994	Natural	under an acre	Salmon-Challis National Forest	not named
9 July 1994	Natural	118 acres	Salmon-Challis National Forest	BLUE MOUNTAIN

Every fire recorded in Custer County

Mines and quarries near this property

10 of 42 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 42 workings within 5 miles of Bayhorse: 21 past producers, 15 prospects, 4 occurrences, 2 producers. 2 still produce. What was taken out: Lead, Fluorine-Fluorite, Silver, Gold. 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
Bayhorse District	Copper, Lead, Zinc, Silver, Tungsten	Producer	HYDROTHERMAL REPLACEMENT, VEINS
Bayhorse Lead	Lead, Copper, Gold, Silver, Zinc	Past Producer
Beardsley Mine	Lead, Gold, Zinc, Copper, Silver	Past Producer	Copper
Cave Mine	Lead, Silver, Copper, Gold	Past Producer	Vein
Democrat Prospect	Lead, Silver, Gold, Copper	Past Producer	Replacement
Dougherty Group	Lead, Copper, Silver	Past Producer	Vein
Forest Rose Mine	Gold, Copper, Silver, Lead	Past Producer	Replacement
Js Prospect	Zinc, Lead	Prospect
Julliette Lode	Lead, Zinc, Silver, Gold, Copper	Prospect
Keno Mine	Gold, Lead, Silver, Fluorine-Fluorite	Past Producer

Every working recorded in Custer County

Storms near this property

18 since 1995

Regional context, not property-specific evidence. The National Weather Service names Challis, the town this property stands in, in 18 storm reports between 1995 and 2025: 9 thunderstorm wind, 6 flash flood, 1 hail, 1 tornado. 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
July 1995	Thunderstorm Wind	Challis	$5,000	no account filed
July 2008	Thunderstorm Wind	Challis	$3,000	Tree downed on a house in Challis with a reported 61 mph wind gust. Power was knocked out for 2 hours in the entire city of Challis.
August 2023	Thunderstorm Wind	Challis	$1,000	Tree blown down in Challis in 60 mph wind gusts.
September 2010	Thunderstorm Wind	Challis	$1,000	Wind gusts estimated over 60 mph uprooted a large spruce tree in Challis and it took out a Custer Telephone cable TV line. Salmon River Electric reported power outages in the Yankee Fork and Rod and Gun Club areas. The Yankee Fork outage was due to a tree falling on the Yankee Fok distribution line. About 50 people lost power for 3 hours. Times estimated from newspaper and ASOS reports in the area.
April 2008	Tornado (EF0)	Challis	$1,000	A tornado was reported 2 miles north of Challis. It removed and destroyed a roof on a house.
May 2025	Thunderstorm Wind	Challis	-	A 58 mph wind gust recorded by spotter in Challis.
September 2025	Flash Flood	Challis	-	A mudslide occurred in Custer County on Bayhorse Creek Rd about 1 mile from the Bayhorse town site. One to one and a half inches of rain fell in a two hour period.
August 2023	Debris Flow	Challis	-	Heavy rain caused a landslide blocking all lanes of Highway 75 near US Highway 93 south of Challis.
August 2023	Thunderstorm Wind	Challis	-	Trained spotter had a 61 mph wind gust.
August 2021	Flash Flood	Challis	-	Idaho Transportation Department reported multiple mudslides and rock falls along US 93 between Evans and McKim Creek roads.
September 2019	Thunderstorm Wind	Challis	-	A 61 mph wind gust measured in Challis.
July 2013	Flash Flood	Challis	-	Custer County Sheriffs office reported 1 foot of water near Garden Creek affecting power and telephone poles.
July 2011	Flash Flood	Challis	-	Rainfall of 0.30 inches in 15 minutes caused extensive street flooding in the city of Challis.
July 2008	Flash Flood	Challis	-	The Morgan Creek area had several roads washed out by heavy rains.
July 2007	Hail	Challis	-	Three-quarter inch hail reported in Challis.
July 2007	Flash Flood	Challis	-	Rainfall of over 1 inch in less than one hour caused three mudslides along highway 75 in Challis.
July 1995	Thunderstorm Wind	Challis	-	In Challis strong winds downed trees and power lines causing the power to go out.
July 1996	Thunderstorm Wind	Challis	-	no account filed

Every storm recorded in Custer 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.

Sources for this property

National Archives record	The nomination case file for reference 76000671 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Custer County	All 33 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.