Critical Risk Louisiana  ·  Hurricane / Land Subsidence

Plaquemines Parish LA

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

9/ 10
Threat Score
Population
23
Area
2,429
sq miles
Primary Hazard
Hurricane / Land Subsidence
FEMA Disasters
12
federally declared

Plaquemines Parish is the southernmost parish in Louisiana extending like a finger into the Gulf of Mexico along the Mississippi River delta. The parish faces the most extreme hurricane vulnerability of any parish in Louisiana — it is sinking at one of the fastest rates in the world due to land subsidence and is surrounded by water on three sides. Hurricane Katrina destroyed the parish and Ida in 2021 caused catastrophic damage again. The parish hosts critical oil and gas facilities at the mouth of the Mississippi.

// 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 9 / 10    Critical Risk
Primary Hazard Hurricane / Land Subsidence
Secondary Hazard Storm Surge
FEMA Flood Zone Critical
Federally Declared Disasters 12
Last Major Event Ida 2021
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (504) 934-6777
Emergency Shelters 2 designated facilities
Evacuation Routes LA-23 LA-39 Belle Chasse Tunnel

// County Profile

County Plaquemines Parish LA
State Louisiana (LA)
Population 23
Area 2,429 sq miles
FEMA Region Critical

// Other Louisiana Counties

// Nearby Infrastructure Risks

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

🌊
New Orleans Hurricane Protection Levee System LA
Major Dam  ·  New Orleans, LA  ·  US Army Corps of Engineers  ·  10-mi risk zone
9/10 High
🏭
Gulf Coast Grain Export Elevators LA TX
Food Processing  ·  Westwego, LA  ·  Cargill / Bunge / ADM / Louis Dreyfus  ·  5-mi risk zone
9/10 Critical
Phillips 66 Alliance LA Refinery
Chemical Facility  ·  Belle Chasse, LA  ·  Phillips 66  ·  10-mi risk zone
8/10 High
Plaquemines LNG Terminal Louisiana
Chemical Facility  ·  Belle Chasse, LA  ·  Venture Global LNG  ·  5-mi risk zone
8/10 High

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