From the record
1 National Register listing published here.
Sources: the National Register database, National Park Service
21 topographic sheets cover 7 settlements here, and 1 property is on the National Register of Historic Places.
1 National Register listing published here.
Sources: the National Register database, National Park Service
Every 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 |
|---|---|---|---|---|
| Cross Ranch Archeological District | district | 1985 | 85003484 |
Every wildfire the federal occurrence database records inside this county: 60 of them, burning about 6,410 acres. 8 started naturally and 1 was recorded as arson. Each settlement page carries the fires within five miles of it.
| Reported cause | Fires |
|---|---|
| Debris and open burning | 17 |
| Equipment and vehicle use | 14 |
| Missing data/not specified/undetermined | 12 |
| Natural | 8 |
| Power generation/transmission/distribution | 5 |
| Fireworks | 2 |
| Arson/incendiarism | 1 |
| 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 |
|---|---|---|---|---|
| 3 April 2008 | Missing data/not specified/undetermined | 1,200 acres | North Dakota State Forest Service | SPROUT |
| 31 March 2015 | Equipment and vehicle use | 1,000 acres | North Dakota State Forest Service | OLANDER FIRE |
| 10 July 2017 | Equipment and vehicle use | 1,000 acres | North Dakota State Forest Service | BIEBER |
| 3 April 2008 | Missing data/not specified/undetermined | 1,000 acres | Knife River Indian Villages National Historic Site | HEINKE FIRE |
| 15 April 2004 | Natural | 813 acres | North Dakota State Forest Service | NELSON |
| 3 April 2016 | Power generation/transmission/distribution | 400 acres | North Dakota State Forest Service | SAUTER |
| 3 April 2016 | Missing data/not specified/undetermined | 300 acres | North Dakota State Forest Service | BEULAH FIRE |
| 27 February 2016 | Debris and open burning | 200 acres | North Dakota State Forest Service | KELLER FIRE |
Every settlement page carries the fires within five miles of it - see the settlement index below.
The NOAA Storm Events Database holds 186 reports for this county, causing no deaths, 1 injury and about $1,904,600 in recorded property damage. Each settlement page carries the reports that name it.
| Kind of event | Reports |
|---|---|
| Hail | 109 |
| Thunderstorm Wind | 53 |
| Tornado | 10 |
| Flash Flood | 5 |
| Flood | 5 |
| Funnel Cloud | 4 |
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 |
|---|---|---|---|---|
| June 1990 | Tornado (F2) | not stated | 1 hurt, $250,000 | no account filed |
| June 2011 | Flood | Ft Clark | $500,000 | See the event episode narrative for details. |
| September 2014 | Hail | Center | $200,000 | There was damage to buildings and the hail stripped leaves from trees and broke branches. Hail ranged from quarter to baseball size. |
| June 2025 | Hail | Hannover | $100,000 | A window was broken, roofing was damaged, and the shop and barn were severely dented. |
| July 2014 | Thunderstorm Wind | Center | $100,000 | Trees six inches in diameter were snapped in Center. Power lines were also reported down from the falling trees. |
| April 2009 | Flood | Hannover | $99,000 | Heavy overland flooding associated with snowmelt resulted in damage to county and township roads. |
| March 2009 | Flood | Hannover | $88,000 | Overland flooding damaged state, county and township roads. No homes were flooded. Flooding continued into April. |
| July 2014 | Thunderstorm Wind | Hannover | $60,000 | Very strong straight line thunderstorm winds resulted in extensive tree and building damage to a farmstead near Hannover. The worst of the damage occurred to a shed, which was blown apart and scattered one half of a mile downwind. |
| September 2014 | Hail | Hannover | $60,000 | Windows were broken out of the west side of a home. |
| May 1994 | Hail | Center | $50,000 | no account filed |
| August 1993 | Thunderstorm Wind | Hannover | $50,000 | no account filed |
| July 2014 | Thunderstorm Wind | Price | $45,000 | Trees were down in the town of Price. |
| July 2021 | Thunderstorm Wind | Center | $35,000 | A small grain bin was blown out of the yard, and shingles were blown off the west side of a house. |
| August 2021 | Flash Flood | Hannover | $35,000 | Over four inches of rain falling from a slow moving thunderstorm led to flash flooding. Rural roads had water flowing over them, washing gravel away and making them impassable. |
| July 2005 | Hail | Center | $30,000 | Damage to homes, vehicles, and trees. |
| July 2014 | Thunderstorm Wind | Sanger | $25,000 | Trees twelve inches in diameter were snapped by the strong winds. |
| June 2025 | Thunderstorm Wind | Hannover | $20,000 | Multiple trees were broken down. |
| July 2015 | Thunderstorm Wind | Center | $20,000 | A farm was impacted by the severe thunderstorm winds. Fences were blown down, garage doors were blown out, roofs were damaged, and farmyard items were blown over and rolled. Crop damage was also reported. |
| June 2011 | Flash Flood | Center | $20,000 | Heavy rainfall of over three inches resulted in widespread flash flooding over eastern Oliver County as confirmed by emergency management. Low water crossings were flooded with damage to gravel roads and culverts. |
| June 2009 | Thunderstorm Wind | Sanger | $12,000 | Several large trees 15 inches in diameter were reported blown down. |
| June 1996 | Thunderstorm Wind | Center | $12,000 | no account filed |
| July 2022 | Thunderstorm Wind | Sanger | $10,000 | Multiple large trees blew down at Cross Ranch State Park. |
| July 2020 | Tornado (EF1) | Sanger | $10,000 | The tornado touched down in Cross Ranch State Park and passed along the Matah Trail before lifting along the shores of the Missouri River. Large Cottonwood trees were twisted and broken into many different directions. Based on the damage done the tornado was rated EF-1. From that, wind speeds were estimated to have been around 90 mph. |
| June 2016 | Thunderstorm Wind | Price | $10,000 | Some trees were reported down in the area. |
| July 2016 | Thunderstorm Wind | Center | $10,000 | Trees were down near Center. |
| July 2014 | Thunderstorm Wind | Hannover | $10,000 | The strong winds snapped two twenty foot tall trees. |
| September 2009 | Thunderstorm Wind | Center | $10,000 | Hail up to the size of nickels accompanied the severe thunderstorm wind gusts. Some tree damage was reported in Center. |
| June 2018 | Thunderstorm Wind | Hannover | $8,000 | Small trees were blown over. |
| September 2023 | Thunderstorm Wind | Sanger | $5,000 | Several trees blew down at Cross Ranch State Park, and many other branches were blown down. Upon inspection of the trees that blew down, some rot was noted. |
| August 2019 | Hail | Hannover | $5,000 | Tree were stripped of leaves and extensive crop damage occurred. |
| May 1994 | Hail | Hensler | $5,000 | no account filed |
| May 1994 | Hail | Center | $5,000 | no account filed |
| August 2021 | Thunderstorm Wind | Hannover | $2,000 | An unattached porch was tipped over. |
| August 2023 | Thunderstorm Wind | Hannover | $1,000 | Two-inch diameter tree branches were broken. |
| June 2020 | Thunderstorm Wind | Hannover | $1,000 | Thunderstorm winds damaged the screen door to a house. |
| May 2007 | Thunderstorm Wind | Center | $1,000 | Damage to observers home. Soffit and gutter was torn off. |
| July 1996 | Thunderstorm Wind | Center | $500 | no account filed |
| May 2007 | Hail | Center | $100 | One window was broken due to the hail. |
| June 2025 | Tornado (EFU) | Hannover | - | The tornado formed in an open field southwest of Hannover and tracked to the southeast before dissipating south of Hannover. The tornado impacted no structures, thus there was no damage to evaluate. By National Weather Service policy the tornado is rated EF-U (Unknown). |
| August 2023 | Thunderstorm Wind | Center | - | Thunderstorm wind gusts were estimated by the public. |
| August 2019 | Thunderstorm Wind | Hannover | - | Winds gusts estimated by the public. |
| June 2017 | Thunderstorm Wind | Hannover | - | Thunderstorm wind gusts of 60 mph were estimated by a trained spotter. |
| July 2017 | Tornado (EF0) | Sanger | - | There were numerous reports of this tornado over a rural area of eastern Oliver County. It was visible from Bismarck and Mandan. No damage occurred and so the tornado was rated EF0. |
| July 2014 | Thunderstorm Wind | Price | - | Heavy rain accompanied the strong winds. |
| August 2011 | Flood | Ft Clark | - | See the event episode narrative for details. |
| July 2011 | Flood | Ft Clark | - | See the event episode narrative for details. |
| June 2011 | Funnel Cloud | Center | - | Two funnel clouds were reported over Oliver County. The funnels did not reach the surface and dissipated shortly after forming. |
| June 2011 | Funnel Cloud | Center | - | Three funnel clouds were reported. Law enforcement reported these funnels did not touch the ground. |
| May 2010 | Thunderstorm Wind | Center | - | Very heavy rain accompanied the strong thunderstorm winds. |
| June 2009 | Thunderstorm Wind | Center | - | Severe thunderstorm wind gusts were accompanied by dime size hail. |
| July 2008 | Hail | Hannover | - | Law enforcement reported nickel size hail along with estimated wind gusts up to 60 mph. |
| July 2008 | Funnel Cloud | Sanger | - | A funnel cloud was reported west of the Missouri River by Fire Department personnel. |
| May 2007 | Thunderstorm Wind | Center | - | Rainfall was 0.57 inches in a very short period of time which caused very minor street flooding. The storm was accompanied by pea size hail. |
| August 2006 | Hail | Hensler | - | Severe crop damage. Also had 1.50 inches of rain. |
| May 2005 | Flash Flood | Center | - | Heavy rainfall of 3.50 inches caused water to flow across farm yard and into the basement of a farm house. |
| August 2004 | Tornado (F0) | Center | - | Tornado briefly touched down in open country. |
| July 2003 | Thunderstorm Wind | Center | - | Large tree limbs broken. |
| August 2002 | Flash Flood | Sanger | - | Washed out roads and deep ruts at the Cross Ranch State Park. |
| August 2002 | Flash Flood | Hannover | - | County roads flooded with 1 to 2 feet of water resulting in deep cuts in the roads. Rainfall of 5.08 inches from the storm. |
| July 2002 | Thunderstorm Wind | Center | - | Numerous reports by a NWS cooperative observer and newspaper of damage to buildings and downed power lines. Several crop fields wiped out by wind and hail. |
The Survey's mineral resources record lists 1 working inside this county. It is closed or unrecorded. Each settlement page carries the workings within five miles of it.
| Commodity | Workings |
|---|---|
| Sand and Gravel, Construction | 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 |
|---|---|---|---|---|
| Van Oosting Pit and Plant | Sand and Gravel, Construction | Past Producer |
Named 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.
East Oliver unorganized territory · 58530 · Hannover NE quadrangle
6 sheets, 1954 to 1968
West Oliver unorganized territory · 58563 · Otter Creek quadrangle
5 sheets, 1954 to 1972
East Oliver unorganized territory · 58530 · On Sherk Creek · Price quadrangle
9 sheets, 1950 to 1979