BlockFrom the record
3 National Register listings published here.
Sources: the National Register database, National Park Service
Slope County, North Dakota
18 topographic sheets cover 8 settlements here, and 3 properties are on the National Register of Historic Places.
Research this county
What the record shows
- 44 topographic sheet readings cover the county's settlements.
- 3 properties here are on the National Register of Historic Places: 3 buildings.
- 1 of the 3 listings was added during the 1970s.
- The Geographic Names Information System records 8 populated places in this county; 8 are covered by at least one topographic sheet.
Places on the National Register
3Every property in this county listed on the National Register of Historic Places, with the year it was listed and the federal nomination document.
| Photograph | Property | Type | Listed | Reference |
|---|---|---|---|---|
| H-T Ranch | building | 1985 | 85001491 | |
 | Mystic Theatre | building | 1977 | 77001029 |
 | Original Slope County Courthouse | building | 85002994 |
Wildfire, 1992 to 2020
68 firesEvery wildfire the federal occurrence database records inside this county: 68 of them, burning about 10,183 acres. 45 started naturally and none was recorded as arson. Each settlement page carries the fires within five miles of it.
| Reported cause | Fires |
|---|---|
| Natural | 45 |
| Equipment and vehicle use | 9 |
| Missing data/not specified/undetermined | 7 |
| Power generation/transmission/distribution | 3 |
| Debris and open burning | 3 |
| Smoking | 1 |
The five largest, by the area the report gives. None of them was recorded as arson.
| Date | Cause | Size | Reported by | Name on the report |
|---|---|---|---|---|
| 1 September 2004 | Equipment and vehicle use | 3,740 acres | Dakota Prairie National Grasslands | DEEP CREEK |
| 23 July 2008 | Natural | 2,405 acres | Dakota Prairie National Grasslands | BROWN |
| 27 August 2005 | Equipment and vehicle use | 700 acres | North Dakota State Forest Service | not named |
| 27 July 2005 | Equipment and vehicle use | 500 acres | North Dakota State Forest Service | not named |
| 18 August 1994 | Natural | 420 acres | Custer Gallatin National Forest | BLACK BUTTE |
| 24 August 2018 | Equipment and vehicle use | 330 acres | Dakota Prairie National Grasslands | SCHAEFFER |
| 2 September 1996 | Natural | 300 acres | Custer Gallatin National Forest | FRANKLUND |
| 18 July 2006 | Natural | 289 acres | Dakota Prairie National Grasslands | DAVIS (DEVILS HOLE) |
Every settlement page carries the fires within five miles of it - see the settlement index below.
Storms, 1960 to 2025
60 of 167 shownThe NOAA Storm Events Database holds 167 reports for this county, causing no deaths, no injuries and about $1,305,560 in recorded property damage. Each settlement page carries the reports that name it.
| Kind of event | Reports |
|---|---|
| Hail | 96 |
| Thunderstorm Wind | 49 |
| Tornado | 11 |
| Funnel Cloud | 7 |
| Heavy Rain | 2 |
| Flood | 1 |
| Lightning | 1 |
The most serious of them, by death, then injury, then recorded damage. The accounts are quoted exactly as the forecast office filed them.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| July 2017 | Thunderstorm Wind | Amidon | $400,000 | A hopper style grain bin was destroyed at a ranch. Electrical poles in the area were snapped. |
| July 2016 | Hail | Amidon | $150,000 | Crops and vehicles were extensively damaged from the baseball sized hail. |
| July 2016 | Hail | Amidon | $125,000 | The ground was covered with golf ball sized hail. The hail dented frames on windows and broke window screens. Windshields were broken on vehicles. |
| July 2017 | Thunderstorm Wind | Amidon | $90,000 | Two outbuildings on a farm were toppled. Windows on the home were broken. |
| July 2017 | Thunderstorm Wind | Amidon | $80,000 | A barn collapsed at a ranch, and animals were trapped inside. |
| July 2017 | Thunderstorm Wind | Amidon | $75,000 | Four grain grain bins were damaged by the thunderstorm winds. |
| July 2016 | Hail | Marmarth | $50,000 | Wind gusts to 60 mph also accompanied the hail. |
| June 2007 | Flood | Amidon | $50,000 | Heavy rain over a few day period led to water running over county roads. Newspaper articles indicated the water was not significantly deep over most of them. Low water was running across farm roads and fields. |
| May 2007 | Thunderstorm Wind | Marmarth | $40,000 | A shop that was under construction was collapsed. Grain bin 1 mile east of Marmarth was damaged along with the roof of a farm outbuilding torn off. A horse trailer was tipped 1 mile northeast of Marmarth. The Sand Creek RAWS site 26 miles northeast of Marmarth measured a 78 mph gust around 1130 PM CDT. |
| September 2010 | Tornado (EF0) | Marmarth | $30,000 | A tornado touched down near a farmstead in rural Slope County. One small outbuilding was damaged and several small trees were blown down. The damage was consistent with EF0 tornado damage on the Enhanced Fujita Scale. From that it was determined that wind speeds were near 85 mph with this tornado. |
| August 1996 | Thunderstorm Wind | New England | $30,000 | no account filed |
| July 2017 | Hail | Amidon | $25,000 | The large hail broke windows in a home. Tree damage was also reported. |
| May 2013 | Hail | Marmarth | $25,000 | Windows at a farmstead were broken by the large hail and buildings were damaged. |
| June 1991 | Tornado (F0) | not stated | $25,000 | no account filed |
| May 1965 | Tornado | not stated | $25,000 | no account filed |
| July 2015 | Thunderstorm Wind | Marmarth | $15,000 | A tree blew over onto a garage roof, damaging the roof. |
| August 2011 | Hail | Marmarth | $15,000 | The large hail broke windows. |
| September 1997 | Thunderstorm Wind | Amidon | $15,000 | strong downburst winds developed 20 miles northwest of Amidon on the Logging Creek Ranch where between 300 and 400 Ponderosa Pines were knocked down or tore in half. 4 miles south of the logging camp a rancher had 2 roofs blown off of sheds and his steel wind mill was doubled over in half. A Forest Service wind recorder at the Sand Creek Wildlife refuge 7 NW of Amidon recorded the peak gust at 135 mph. This is the new record non-tornadic wind speed for North Dakota. One the refuge its estimated that another 200-300 pines were stripped, tore in half, or toppled altogether. |
| September 2010 | Thunderstorm Wind | Marmarth | $10,000 | The strong thunderstorm winds resulted in roof damage. |
| July 2011 | Thunderstorm Wind | Amidon | $5,000 | Several tree branches were blown off from the strong winds. |
| August 2011 | Lightning | Marmarth | $5,000 | A lightning strike triggered a large grass fire in southern Slope County that burned into the next day. The fire spread through rows of hay bales. |
| July 2007 | Hail | Amidon | $5,000 | The ground was white with hail at conclusion. Minor damage to buildings was reported. |
| June 1999 | Tornado (F0) | Amidon | $5,000 | no account filed |
| June 1991 | Tornado (F1) | not stated | $2,500 | no account filed |
| May 1972 | Tornado (F1) | not stated | $2,500 | no account filed |
| August 1960 | Tornado | not stated | $2,500 | no account filed |
| September 2021 | Hail | Amidon | $2,000 | The hail broke a skylight on a home. |
| July 2009 | Thunderstorm Wind | Amidon | $1,000 | Severe thunderstorm winds resulted in four inch in diameter tree limbs down, as well as a round metal picnic table being turned over and damaged. |
| July 1983 | Tornado (F0) | not stated | $30 | no account filed |
| July 1983 | Tornado (F0) | not stated | $30 | no account filed |
| June 2025 | Thunderstorm Wind | Amidon | - | Thunderstorm wind gusts were estimated by a trained spotter. |
| June 2024 | Thunderstorm Wind | Amidon | - | Thunderstorm wind gusts were estimated by the public. |
| July 2022 | Thunderstorm Wind | Amidon | - | Thunderstorm wind gusts were estimated by a trained spotter. |
| July 2022 | Thunderstorm Wind | Amidon | - | Thunderstorm wind gusts were estimated by a trained spotter. |
| July 2022 | Thunderstorm Wind | Amidon | - | Thunderstorm wind gusts were estimated by the public. |
| July 2020 | Thunderstorm Wind | Amidon | - | Thunderstorm wind gusts estimated by Emergency Manager. |
| July 2020 | Thunderstorm Wind | Marmarth | - | Thunderstorm wind gusts were estimated by the public. |
| August 2019 | Hail | Amidon | - | Significant crop damage occurred. |
| June 2015 | Thunderstorm Wind | Amidon | - | A trained spotter reported strong thunderstorm wind gusts near Amidon. |
| July 2015 | Thunderstorm Wind | Marmarth | - | Strong thunderstorm wind gusts were reported by the public. |
| May 2011 | Heavy Rain | Marmarth | - | A storm total rainfall of 3.00 inches was reported. |
| July 2011 | Hail | Amidon | - | The majority of the hail was the size of nickels, with a few larger stones. |
| August 2010 | Thunderstorm Wind | Amidon | - | An estimated wind speed of 60 mph was reported. |
| July 2010 | Tornado (EF0) | Amidon | - | This tornado occurred in open country and impacted no structures. There was no damage. The tornado was produced by a high based thunderstorm and was visible from as far away as Beach, North Dakota, around 40 miles away. The tornado was rated EF0. The National Weather Service received no fewer than five reports of the event in real time, from different directions. This made it difficult in determining exactly where the tornado occurred. Location was determined with assistance of the Slope County Sheriff. |
| September 2010 | Funnel Cloud | Marmarth | - | A brief funnel cloud was reported. |
| June 2009 | Thunderstorm Wind | Marmarth | - | Small pea sized hail accompanied the strong thunderstorm winds. |
| June 2009 | Heavy Rain | Amidon | - | A thunderstorm produced 1.40 inches of rainfall in 20 minutes. |
| July 2009 | Funnel Cloud | Marmarth | - | Emergency management reported this funnel cloud. |
| May 2005 | Hail | Amidon | - | Hail damaged police vehicle in the city of Amidon. |
| July 2005 | Hail | Amidon | - | Hail reported along Highway 85. |
| July 2001 | Hail | Marmarth | - | Reported by a cooperative observer. |
| July 2001 | Hail | Marmarth | - | The hail lasted 6 minutes. |
| July 2001 | Tornado (F0) | Amidon | - | Multiple brief touchdown's in open country. Reported by three different sources. The sighting occurred just west of the Slope-Hettinger county line. |
| July 2000 | Hail | Amidon | - | Pasture pounded flat. |
| July 1997 | Hail | Amidon | - | Hail fell 9 W of Amidon |
| June 1997 | Hail | Amidon | - | also wind gusts to 70 mph |
| June 1997 | Hail | Amidon | - | Hail fell 12 SE Amidon |
| June 2025 | Thunderstorm Wind | Amidon | - | no account filed |
| July 2025 | Thunderstorm Wind | Amidon | - | no account filed |
| July 2025 | Hail | Amidon | - | no account filed |
Mines and quarries
30 recordedThe Survey's mineral resources record lists 30 workings inside this county. 7 still produce and 23 are closed or unrecorded. Each settlement page carries the workings within five miles of it.
| Commodity | Workings |
|---|---|
| Sand and Gravel, Construction | 20 |
| Stone, Crushed/Broken | 6 |
| Uranium | 2 |
| Clay | 1 |
| Aggregate, Light Weight | 1 |
| Lignite | 1 |
The least common of them first, because a county's hundredth gravel pit says nothing its first ten did not.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Scoria Pit | Aggregate, Light Weight | Producer | ||
| Unnamed Prospect | Clay | Producer | ||
| Uraniferous Lignite Pit | Uranium, Lignite | Past Producer | ||
| Hurick No. 1 | Uranium | Past Producer | ||
| Scoria Pit | Stone, Crushed/Broken | Past Producer | ||
| Scoria Pit | Stone, Crushed/Broken | Past Producer | ||
| Scoria Pit | Stone, Crushed/Broken | Past Producer | ||
| Scoria Pit | Stone, Crushed/Broken | Past Producer | ||
| Scoria Pit | Stone, Crushed/Broken | Producer | ||
| Scoria Pit | Stone, Crushed/Broken | Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Gravel Pit | Sand and Gravel, Construction | Past Producer | ||
| Scoria Pit | Sand and Gravel, Construction | Past Producer | ||
| Scoria Pit | Sand and Gravel, Construction | Past Producer | ||
| Scoria Pit | Sand and Gravel, Construction | Past Producer | ||
| Scoria Pit | Sand and Gravel, Construction | Past Producer | ||
| State Gravel Pit | Sand and Gravel, Construction | Producer | ||
| Unnamed Prospect | Sand and Gravel, Construction | Producer |
Every populated place in the county
8Named settlements recorded in the Geographic Names Information System, each with the topographic sheets covering it. Villages, hamlets and abandoned places alike. Each is shown with the nearest named watercourse or landform and the survey quadrangle it falls on.
-
Marmarth
Marmarth city · 58643 · On Little Beaver Creek · Marmarth quadrangle
6 sheets, 1953 to 1997
-
Three V Crossing
Northwest Slope unorganized territory · 58651 · Three V Crossing quadrangle
6 sheets, 1953 to 1997
-
Walser Crossing
Northwest Slope unorganized territory · 58651 · Deep Creek North quadrangle
6 sheets, 1953 to 1997
Provenance
- Topographic sheets. USGS Historical Topographic Map Collection, county index, measured from the bulk metadata.
- Fire insurance maps. Library of Congress Sanborn collection, faceted to this county.
- Photographs. Each place queried individually against the Library of Congress Prints and Photographs search.
- 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.