New Orleans levee system
E123952
The New Orleans levee system is a network of floodwalls, levees, and related flood-control structures designed to protect the low-lying city from storm surges and Mississippi River flooding.
All labels observed (1)
| Label | Occurrences |
|---|---|
| New Orleans levee system canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1065084 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: New Orleans levee system Context triple: [Hurricane Katrina, notableInfrastructureFailureLocation, New Orleans levee system]
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A.
Houston Ship Channel
The Houston Ship Channel is a major industrial waterway in Texas that connects the Port of Houston to the Gulf of Mexico and serves as a critical hub for petrochemical shipping and commerce.
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B.
Port of Mobile
The Port of Mobile is a major deep-water seaport in Alabama that serves as a key hub for international trade, shipping, and transportation infrastructure in the southeastern United States.
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C.
Metairie, Louisiana, United States
Metairie, Louisiana, United States is a suburban community in the New Orleans metropolitan area, known as the birthplace of comedian and television host Ellen DeGeneres.
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D.
Bay St. Louis, Mississippi
Bay St. Louis, Mississippi is a small Gulf Coast city known for its historic downtown, waterfront setting, and proximity to NASA’s Stennis Space Center.
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E.
Mississippi River Delta region
The Mississippi River Delta region is a vast alluvial plain in the lower Mississippi Valley known for its rich agricultural land, distinctive blues and Southern cultural heritage, and historical significance in the development of the American South.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: New Orleans levee system Target entity description: The New Orleans levee system is a network of floodwalls, levees, and related flood-control structures designed to protect the low-lying city from storm surges and Mississippi River flooding.
-
A.
Houston Ship Channel
The Houston Ship Channel is a major industrial waterway in Texas that connects the Port of Houston to the Gulf of Mexico and serves as a critical hub for petrochemical shipping and commerce.
-
B.
Port of Mobile
The Port of Mobile is a major deep-water seaport in Alabama that serves as a key hub for international trade, shipping, and transportation infrastructure in the southeastern United States.
-
C.
Metairie, Louisiana, United States
Metairie, Louisiana, United States is a suburban community in the New Orleans metropolitan area, known as the birthplace of comedian and television host Ellen DeGeneres.
-
D.
Bay St. Louis, Mississippi
Bay St. Louis, Mississippi is a small Gulf Coast city known for its historic downtown, waterfront setting, and proximity to NASA’s Stennis Space Center.
-
E.
Mississippi River Delta region
The Mississippi River Delta region is a vast alluvial plain in the lower Mississippi Valley known for its rich agricultural land, distinctive blues and Southern cultural heritage, and historical significance in the development of the American South.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
flood protection system
ⓘ
infrastructure network ⓘ levee system ⓘ |
| associatedWith |
Hurricane and Storm Damage Risk Reduction System program
ⓘ
surface form:
Hurricane and Storm Damage Risk Reduction System
|
| challenges |
coastal erosion
ⓘ
sea level rise ⓘ subsidence ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| designedToProtect | low-lying areas of New Orleans ⓘ |
| engineeringDiscipline | civil engineering ⓘ |
| environment |
coastal wetland region
ⓘ
deltaic plain ⓘ |
| experienced | multiple levee breaches during Hurricane Katrina ⓘ |
| follows |
Gulf Intracoastal Waterway
ⓘ
Lake Pontchartrain shoreline ⓘ Mississippi River ⓘ |
| governedBy |
federal flood control policies
ⓘ
local levee board regulations ⓘ |
| hasPart |
canals
ⓘ
floodgates ⓘ floodwalls ⓘ levees ⓘ pumping stations ⓘ |
| locatedIn |
Louisiana
ⓘ
New Orleans ⓘ United States of America ⓘ
surface form:
United States
|
| maintainedBy |
U.S. Army Corps of Engineers
ⓘ
local levee districts ⓘ |
| notableEvent | Hurricane Katrina levee failures ⓘ |
| operator | U.S. Army Corps of Engineers ⓘ |
| protects |
New Orleans
ⓘ
surface form:
city of New Orleans
|
| protectsAgainst |
Mississippi River flooding
ⓘ
hurricane storm surge ⓘ storm surge ⓘ |
| purpose |
flood control
ⓘ
hurricane protection ⓘ storm surge protection ⓘ |
| regulates | water levels in canals ⓘ |
| relatedTo |
Lake Pontchartrain
ⓘ
surface form:
Lake Pontchartrain and Vicinity Project
Mississippi River levee system ⓘ |
| riskLevel | high-consequence infrastructure ⓘ |
| serves |
New Orleans metropolitan area
ⓘ
surface form:
Greater New Orleans metropolitan area
|
| significantYear | 2005 ⓘ |
| underwent | post-Katrina reconstruction ⓘ |
| upgradedBy | Hurricane and Storm Damage Risk Reduction System program ⓘ |
| vulnerableTo |
breach
ⓘ
overtopping ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: New Orleans levee system Description of subject: The New Orleans levee system is a network of floodwalls, levees, and related flood-control structures designed to protect the low-lying city from storm surges and Mississippi River flooding.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.