Listed on the National Register of Historic Places in 1982.
“Bald Mountain Hot Springs in Ketchum, Idaho was a historic resort. Located at Main and 1st St. in Ketchum, the complex was listed on the National Register of Historic Places in 1982.”
Wikipedia article Bald Mountain Hot Springs, CC BY-SA 4.0.
One of 21 National Register listings published here for Blaine County · listed in 1982 · category: Building.
Sources: the Wikipedia article · 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 34 fires within 5 miles of Bald Mountain Hot Springs between 1992 and 2020, burning about 944 acres in total. 12 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 | 12 |
| Recreation and ceremony | 9 |
| Missing data/not specified/undetermined | 5 |
| Equipment and vehicle use | 5 |
| Smoking | 1 |
| Other causes | 1 |
| Power generation/transmission/distribution | 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 |
|---|---|---|---|---|
| 8 September 2011 | Natural | 2.4 acres | Twin Falls District | GREENHORN |
| 29 September 2000 | Equipment and vehicle use | under an acre | Sawtooth National Forest | GREYHAWK |
| 24 September 2018 | Equipment and vehicle use | under an acre | Sawtooth National Forest | COLLEGE |
| 16 September 1998 | Recreation and ceremony | under an acre | Sawtooth National Forest | UNCLE JOHNS |
| 13 September 2013 | Natural | under an acre | Sawtooth National Forest | COTTONWOOD |
| 13 September 2010 | Missing data/not specified/undetermined | under an acre | Twin Falls District | BOUNDARY CG |
| 25 August 2001 | Equipment and vehicle use | under an acre | Sawtooth National Forest | BROADWAY |
| 21 August 1995 | Natural | under an acre | Sawtooth National Forest | PARKER |
Regional context, not property-specific evidence. The federal mineral resources record lists 62 workings within 5 miles of Bald Mountain Hot Springs: 22 past producers, 18 occurrences, 17 unknowns, 5 prospects. None of them still produces. What was taken out: Lead, Silver, Gold, Zinc. 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 |
|---|---|---|---|---|
| Allen Mine | Copper, Silver, Lead, Gold | Past Producer | Vein | |
| Allen Mine | Lead, Silver, Copper, Gold | Past Producer | ||
| Bald Eagle Mine | Copper, Silver, Lead, Gold | Unknown | ||
| Bald Eagle Prospect | Gold, Copper, Silver, Lead | Occurrence | Chalcopyrite, Galena, Sphalerite | |
| Baltimore Mine | Zinc, Silver, Lead, Gold, Copper | Past Producer | ||
| Elkhorn | Lead, Zinc, Silver, Gold | Past Producer | ||
| Elkhorn Mine | Silver, Gold, Lead | Past Producer | 1879 | |
| Evelyn Prospect | Coal, Lead | Occurrence | Sedimentary | |
| Evelyn Prospect | Lead, Coal | Unknown | ||
| Ida Harlan | Stone, Crushed/Broken, Zinc, Silver, Lead, Quartz | Unknown |
Regional context, not property-specific evidence. The National Weather Service names Ketchum, the town this property stands in, in 24 storm reports between 1995 and 2025: 13 thunderstorm wind, 6 flash flood, 2 hail, 1 lightning. 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 2018 | Flood | Ketchum | $155,000 | Warmer temperatures caused rises in the Wood River and period of rain embedded as well and flooding began in Bellevue on March 13th. Spruce Street in Bellevue flooded with Pero Road closed on the 15th. By the 27th the following roads in Blaine County were all reported closed: Democrat Gulch, Colorado Gulch, Road Canyon, Quigley, Muldoon Canyon, Rock Creek, Camp Creek, Croy Creek. Two homes in the Warm Springs area flooded along with adjacent barns and buildings. Estimated march damage in the county was seet at $155,000. |
| July 2025 | Thunderstorm Wind | Ketchum | $3,000 | Multiple large trees downed on Bald Mountain blocking some trails. Most of the trees were uprooted and a mudslide was also reported. |
| July 2025 | Thunderstorm Wind | Ketchum | $1,000 | A tree was downed in the Adams Gulch area near Ketchum. |
| July 2025 | Thunderstorm Wind | Ketchum | $1,000 | Tree downed from thunderstorm winds across lower portion of Bald Mountain Trail near the Big Wood River. Outdoor event tents were blown over at Sun Valley Resort. |
| August 2014 | Lightning | Ketchum | $1,000 | A lightning strike to a power pole in between Hailey and Ketchum shut down power and also business in Ketchum from 5:35 pm MDT to 8 pm MDT on August 12th. |
| August 2024 | Thunderstorm Wind | Ketchum | - | Station SVB1H recorded a 58 mph wind gust near Ketchum. |
| July 2020 | Thunderstorm Wind | Ketchum | - | A 60 mph gust measured on Bald Mountain. |
| August 2019 | Debris Flow | Ketchum | - | On August 9th a mud slide occurred one mile past the east fort of Baker Creek. Warm Springs Road was impassable from the west of the Hot Springs in Ketchum. 3 to 5 inches of mud covered the road. |
| May 2019 | Hail | Ketchum | - | One inch hail reported in Ketchum taking leaves off trees. |
| May 2019 | Thunderstorm Wind | Ketchum | - | Mesonet station NFFI1 recorded a 63 mph wind gust 7 miles north northwest of Ketchum. |
| May 2018 | Thunderstorm Wind | Ketchum | - | A tree was downed and fell into a roadway blocking one lane of traffic in Ketchum. |
| May 2017 | Thunderstorm Wind | Ketchum | - | A 58 mph wind gust measured at Bald Mountain. |
| June 2017 | Thunderstorm Wind | Ketchum | - | A 69 mph wind gust was recorded on Bald Mountain. |
| August 2014 | Flash Flood | Ketchum | - | Heavy rains caused 2 to 3 meet of mud to ooze out of Castle Creek into Warm Springs west of the city of Ketchum. This occurred between 2:30 and 3:30 pm MDT. |
| August 2014 | Hail | Ketchum | - | Hail one inch in diameter fell in the city of Ketchum. The hail accumulated up to a depth of 2 inches on sidewalks in spots. |
| July 2009 | Flash Flood | Ketchum | - | Heavy rain from a thunderstorm caused a mudslide over the Castle Rock burn area causing Warm Springs Road to be closed. The mud was 2 feet deep and 30 feet wide on the road. |
| June 2009 | Flash Flood | Ketchum | - | One inch of rain fell in a 20 minute period over the Castle Rock burn area causing mud and debris to flow over Warm Springs Road. |
| June 2009 | Flash Flood | Ketchum | - | Two mudslides were reported on Warm Springs Road due to heavy rain at the Castle Rock burn area. |
| June 2009 | Flash Flood | Ketchum | - | Heavy rain caused mudslide on Warm Springs Road at the Castle rock Burn site as reported by the Blaine County Sheriff. |
| September 2007 | Flash Flood | Ketchum | - | Mud slides reported on Warm Springs road 2 miles west of Ketchum. |
| June 2005 | Thunderstorm Wind | Ketchum | - | 59 mph wind gust at Bald Mountain. |
| May 2005 | Thunderstorm Wind | Ketchum | - | 68 mph wind at Bald Mountain. |
| August 1998 | Thunderstorm Wind | Ketchum | - | Wind knocked down a tree that crushed a trailer home. Wind caused power outages. |
| July 1995 | Thunderstorm Wind | Ketchum | - | Gusty winds and hail associated with severe thunderstorms moved through southern Idaho and parts of northern Idaho. In Dubois, a tractor-semitrailer was overturned causing the road to close for an hour. Trees and power lines were downed in the Hailey and the Terreton area. Lightning also caused seven fire starts. The largest fire was 500 acres at Black Butte. |
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 |
|---|---|---|---|
| Ketchum Ranger District Administrative Site | under 500 feet | 2007 | |
 | Greenhow and Rumsey Store Building | 0.1 miles | 1983 |
 | Cold Springs Pegram Truss Railroad Bridge | 1.8 miles | 1997 |
| Proctor Mountain Ski Lift | 2.3 miles | 1980 | |
 | Gimlet Pegram Truss Railroad Bridge | 5.7 miles | 1997 |
| National Archives record | The nomination case file for reference 82000320 in Record Group 79. |
| Wikipedia article | Community-written account of this property, licensed CC BY-SA. |
| Blaine County | All 21 listed properties in this county. |
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