Moderate Risk North Dakota  ·  Tornado / Missouri River Flooding

Sioux County ND

EMERGENCY PREPAREDNESS & DISASTER RISK PROFILE  ·  LAST UPDATED: Mar 2026

6/ 10
Threat Score
Population
4
Area
1,094
sq miles
Primary Hazard
Tornado / Missouri River Flooding
FEMA Disasters
7
federally declared

Sioux County ND in North Dakota faces tornado / missouri river flooding risk across its 1,094 square mile area. Fort Yates on the Missouri serves this Standing Rock Sioux county on the SD border. Sioux serves as the county seat and regional emergency coordination hub.

// Preparedness Recommendations

  • Evacuation routes inland should be identified in advance.
  • Store at least 72 hours of food and water.
  • Elevate critical belongings above flood level.
  • Have backup power ready in case of grid failure.

// Recommended Supplies

Essential gear for power outages, severe weather, and emergency situations in your area.

// Risk Intelligence

Threat Score 6 / 10    Moderate Risk
Primary Hazard Tornado / Missouri River Flooding
Secondary Hazard Blizzard
FEMA Flood Zone Moderate
Federally Declared Disasters 7
Last Major Event 2016 Dakota Access Protests
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (701) 854-3853
Emergency Shelters 3 designated facilities
Evacuation Routes State and US highways

// County Profile

County Sioux County ND
State North Dakota (ND)
Population 4
Area 1,094 sq miles
FEMA Region Moderate

// Other North Dakota Counties