// Risk Intelligence
| Risk Score | 7 / 10 High |
| Facility Type | ☢ Nuclear Power Plant |
| Operator / Branch | Entergy Nuclear |
| Host County | Claiborne County MS |
| Nearest City | Washington DC |
| Primary Risk Radius | 10 miles |
| Secondary Risk Radius | 50 miles |
// Strategic Significance
Grand Gulf Nuclear Station on the Mississippi River in west-central Mississippi operates a single boiling-water reactor that is the largest single nuclear reactor in the United States by generating capacity at 1497 megawatts. The Mississippi River location creates potential for contamination of the continent's most important river system affecting communities from Mississippi to the Gulf of Mexico.
// Civilian Impact Assessment
The Mississippi River at Grand Gulf flows toward Natchez Baton Rouge New Orleans and ultimately the Gulf of Mexico. The 50-mile ingestion zone encompasses Jackson Mississippi and extends into Louisiana. Mississippi River contamination would cascade downstream affecting drinking water fisheries and agriculture across the entire lower Mississippi Valley and Gulf Coast.
// Evacuation & Shelter Guidance
10-mile EPZ: Evacuate via US-61 or MS-18. Monitor Mississippi Emergency Management Agency broadcasts. 50-mile zone: Jackson area residents monitor MEMA guidance. Mississippi River fish and water intake restrictions would affect communities from Mississippi to the Gulf. Baton Rouge and New Orleans downstream would monitor river quality.
// Recommended Preparedness Gear
Essential preparedness items for residents within the 10-mile risk zone of Grand Gulf Nuclear Station MS.
72-Hour Emergency Food Kit View on Amazon → Water Filtration System View on Amazon → Portable Generator View on Amazon →* ThreatMap USA participates in the Amazon Associates Program.