Flood, Mercer
- When
- March 21, 8:00 AM CST to March 31, 4:00 PM CST
- Where
- Mercer forecast zone
- Injuries
- 1 direct, 0 indirect
- Property damage
- $1.2 million
- Coordinates
- 47.309, -101.831 (the zone’s center; the record gives no point)
Warm weather toward the end of March lead to rapid snow melt across southcentral North Dakota. This in turn lead to flooding across much of the area.
Every event with a place to put it; 12 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS BIS wrote it up.
Warm weather toward the end of March lead to rapid snow melt across southcentral North Dakota. This in turn lead to flooding across much of the area. Near the confluence of Spring Creek and the Knife River, the town of Beulah(Mercer Co) had 150 families evacuated. Sewer lines backed up when the lift stations failed. Up to 4 feet of water flooded streets and lawns. Also in Mercer Co. 1 person was injured when he drove over a section of road that the Knife River washed out. Along the Cannonball River in Hettinger Co., 50 families in the town of Mott were evacuated. In Grant Co., 20 residents along the Cannonball River had to be evacuated. 1 farmer reported losing 50 hogs due to the flooding. In LaMoure Co, the Bonehill and Cottonwood creeks flooded, washing out at least 7 bridges. A 41 yr. old female and her 17 yr. old daughter were killed when they drove their pickup off a section of road washed out by the Bonehill Creek. There was a 50-75 foot section of road missing with the pickup falling approximately 15 feet into the water. 2 horses that were in the horse trailer they were pulling also perished. In the town of Edgely, water lines were forced up by the flood waters and broke, leaving much of the town without water for awhile. Also in LaMoure Co, its estimated that there were 600 washout sites to either dirt or paved roads. The Maple River in Dickey Co isolated 2 farm families. 12 familes were without power for a day when ice sheared off a power pole. Minor flooding in Sioux, Morton and Burleigh counties resulted in overland flooding and a few wet basements. The James River in Stutsman, LaMoure and Dickey counties also did some minor overland flooding with some residents reporting wet basements or washed out county roads.
The national radar mosaic for the moment the first event began.
15 flood. Local standard time, as filed.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Flood, La Moure | 1997-03-29 | 41 | Female | Vehicle/Towed Trailer | Direct |
| Flood, La Moure | 1997-03-29 | 17 | Female | Vehicle/Towed Trailer | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Dakota in 1997Every state in 1997This day in weather historyWarnings in North Dakota, March 1997
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 2026-09-24. Each event’s entry at NCEI: 5588174, 5588175, 5588176, 5588177, 5588366, 5588367, 5588368, 5588369, 5588370, 5588371, 5588372, 5588373, 5588374, 5588375, 5588376.