Low Risk South Carolina  ·  Tornado / Flash Flooding

Barnwell County SC

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

5/ 10
Threat Score
Population
21
Area
548
sq miles
Primary Hazard
Tornado / Flash Flooding
FEMA Disasters
6
federally declared

Barnwell County SC in South Carolina faces tornado / flash flooding risk across its 548 square mile area. Barnwell near the Savannah River Site nuclear complex serves this county. Barnwell 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 5 / 10    Low Risk
Primary Hazard Tornado / Flash Flooding
Secondary Hazard Hurricane Remnants
FEMA Flood Zone Low
Federally Declared Disasters 6
Last Major Event 2019 Tornado
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (803) 541-1000
Emergency Shelters 2 designated facilities
Evacuation Routes State and US highways

// County Profile

County Barnwell County SC
State South Carolina (SC)
Population 21
Area 548 sq miles
FEMA Region Low

// Major Cities

Barnwell SC

// Cities in This County

// Other South Carolina Counties

// Nearby Infrastructure Risks

Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.

Savannah River Site SC Nuclear Waste
Nuclear Power Plant  ·  Aiken, SC  ·  US Department of Energy  ·  10-mi risk zone
10/10 Critical
Barnwell Low Level Radioactive Waste SC
Superfund Site  ·  Barnwell, SC  ·  EnergySolutions  ·  5-mi risk zone
7/10 High

Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.