South Dakota, 2018

Flooding in South Dakota, June 20 to 22, 2018

June 20 to 22, 2018 · NWS UNR · 4 events in 4 counties and zones

From June 17 to June 20, three to five inches of rain fell over the Badlands and portions of southwestern South Dakota. Runoff from the heavy rain caused minor flooding along the White River from Kadoka to the confluence with the Missouri River and the Cheyenne River upstream from Lake Oahe.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
4

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS UNR wrote it up.

From June 17 to June 20, three to five inches of rain fell over the Badlands and portions of southwestern South Dakota. Runoff from the heavy rain caused minor flooding along the White River from Kadoka to the confluence with the Missouri River and the Cheyenne River upstream from Lake Oahe.

The radar

The national radar mosaic for the moment the first event began.

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Event by event

4 flood. Local standard time, as filed.

Flood, Jackson

When
June 20, 9:00 AM MST to 5:15 PM MST
Where
Jackson County, 7.99 mi W of Interior to 12.45 mi WNW of Potato Creek
Cause
Heavy Rain
Reported by
River/Stream Gage
Coordinates
43.720, -102.140

Minor flooding of agricultural land occurred along the White River. The river gauge south of Kadoka along SD Highway 73 crested at 14.0 feet or 1.0 foot above flood stage.

Flood, Tripp

When
June 21, 12:45 AM CST to 8:15 PM CST
Where
Tripp County, 12.99 mi NW of Hamill to 12.79 mi NW of Ideal
Cause
Heavy Rain
Reported by
River/Stream Gage
Coordinates
43.720, -99.880

Minor flooding of agricultural land occurred along the White River near Oacoma. The river gauge southwest of Oacoma along SD Highway 47 crested at 15.6 feet or 0.6 feet above flood stage.

Flood, Ziebach

When
June 21, 9:15 AM MST to June 22, 7:30 AM MST
Where
Ziebach County, 4.92 mi W of Bridger to 21.62 mi WSW of Bridger
Cause
Heavy Rain
Reported by
River/Stream Gage
Coordinates
44.550, -102.000

Minor flooding of agricultural land occurred along the Cheyenne River. The river gauge near Bridger along SD Highway 34 crested at 17.8 feet or 1.8 feet above flood stage.

Flood, Haakon

When
June 21, 9:15 AM MST to June 22, 7:30 AM MST
Where
Haakon County, 16.79 mi WNW of Milesville to 9.2 mi W of Milesville
Cause
Heavy Rain
Reported by
River/Stream Gage
Coordinates
44.510, -102.000

Minor flooding of agricultural land occurred along the Cheyenne River. The river gauge near Bridger along SD Highway 34 crested at 17.8 feet or 1.8 feet above flood stage.

What these are

Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in South Dakota in 2018Every state in 2018This day in weather historyWarnings in South Dakota, June 2018

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 765153, 765160, 765148, 765151.