Great Mississippi Flood of 1927
E835353
The Great Mississippi Flood of 1927 was one of the most destructive river floods in U.S. history, inundating vast areas along the Mississippi River, displacing hundreds of thousands of people, and reshaping American flood control policy and race relations in the South.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Great Mississippi Flood of 1927 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T10009203 — 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: Great Mississippi Flood of 1927 Context triple: [Louisiana 1927, theme, Great Mississippi Flood of 1927]
-
A.
1997 Red River flood
The 1997 Red River flood was a catastrophic spring flood along the Red River of the North that devastated communities in North Dakota, Minnesota, and Manitoba, causing widespread evacuations and extensive property damage.
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B.
Great Flood of 1879
The Great Flood of 1879 was a catastrophic inundation of the city of Szeged in Hungary that destroyed most of the town and prompted a major reconstruction.
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C.
The Great Flood of 1852
The Great Flood of 1852 was a catastrophic inundation of the Murrumbidgee River that devastated the Australian town of Gundagai, causing extensive loss of life and prompting the town’s relocation to higher ground.
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D.
Vanport flood of 1948
The Vanport flood of 1948 was a catastrophic Columbia River flood that destroyed the wartime housing city of Vanport, Oregon, killing at least 15 people and displacing tens of thousands, many of them Black shipyard workers and their families.
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E.
Great Sioux City Flood of 1892
The Great Sioux City Flood of 1892 was a devastating late-19th-century flood that inundated Sioux City, Iowa, causing widespread destruction and loss of life along the Missouri River.
- 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: Great Mississippi Flood of 1927 Target entity description: The Great Mississippi Flood of 1927 was one of the most destructive river floods in U.S. history, inundating vast areas along the Mississippi River, displacing hundreds of thousands of people, and reshaping American flood control policy and race relations in the South.
-
A.
1997 Red River flood
The 1997 Red River flood was a catastrophic spring flood along the Red River of the North that devastated communities in North Dakota, Minnesota, and Manitoba, causing widespread evacuations and extensive property damage.
-
B.
Great Flood of 1879
The Great Flood of 1879 was a catastrophic inundation of the city of Szeged in Hungary that destroyed most of the town and prompted a major reconstruction.
-
C.
The Great Flood of 1852
The Great Flood of 1852 was a catastrophic inundation of the Murrumbidgee River that devastated the Australian town of Gundagai, causing extensive loss of life and prompting the town’s relocation to higher ground.
-
D.
Vanport flood of 1948
The Vanport flood of 1948 was a catastrophic Columbia River flood that destroyed the wartime housing city of Vanport, Oregon, killing at least 15 people and displacing tens of thousands, many of them Black shipyard workers and their families.
-
E.
Great Sioux City Flood of 1892
The Great Sioux City Flood of 1892 was a devastating late-19th-century flood that inundated Sioux City, Iowa, causing widespread destruction and loss of life along the Missouri River.
- F. None of above. chosen
Statements (59)
| Predicate | Object |
|---|---|
| instanceOf |
historical event
ⓘ
natural disaster ⓘ river flood ⓘ |
| aftermath |
changes in land use in flood-prone areas
ⓘ
construction of expanded levee systems ⓘ creation of spillways and floodways along the Mississippi River ⓘ resettlement of displaced populations ⓘ |
| areaFlooded | approximately 27,000 square miles ⓘ |
| cause |
levee failures
ⓘ
prolonged heavy rainfall in Mississippi River basin ⓘ saturated soils and swollen tributaries ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| deaths | hundreds of people ⓘ |
| displacedPeople |
hundreds of thousands of people
ⓘ
over 600,000 people ⓘ |
| documentedIn |
contemporary newspaper accounts
ⓘ
government reports on flood control ⓘ memoirs and oral histories of survivors ⓘ |
| economicDamage |
hundreds of millions of 1927 U.S. dollars
ⓘ
over 1 billion 1927 U.S. dollars (estimated total losses) ⓘ |
| endTime | 1927 ⓘ |
| floodType | riverine flood ⓘ |
| impact |
changes in race relations in the American South
ⓘ
increased African American migration from the South ⓘ long-term economic hardship in the Lower Mississippi Valley ⓘ major humanitarian crisis ⓘ mass displacement of rural populations ⓘ political pressure for federal disaster relief ⓘ severe damage to agricultural production ⓘ strengthening of federal role in flood control ⓘ widespread destruction of homes and farms ⓘ |
| influenced |
development of comprehensive Mississippi River flood control plan
ⓘ
expansion of U.S. Army Corps of Engineers flood control responsibilities ⓘ federal disaster relief policy ⓘ |
| legislativeConsequence | Flood Control Act of 1928 NERFINISHED ⓘ |
| location |
Arkansas
NERFINISHED
ⓘ
Arkansas Delta NERFINISHED ⓘ Illinois ⓘ Kentucky NERFINISHED ⓘ Louisiana NERFINISHED ⓘ Lower Mississippi Valley NERFINISHED ⓘ Mississippi NERFINISHED ⓘ Mississippi Delta NERFINISHED ⓘ Mississippi River Valley NERFINISHED ⓘ Missouri NERFINISHED ⓘ Tennessee NERFINISHED ⓘ |
| mainRiver | Mississippi River NERFINISHED ⓘ |
| notableAspect |
became a catalyst for political activism among African Americans
ⓘ
exposed racial inequalities in relief and recovery efforts ⓘ influenced cultural memory and blues music of the Mississippi Delta ⓘ led to forced labor and abuses in some relief camps for African Americans ⓘ one of the most destructive river floods in U.S. history ⓘ |
| partOf |
history of natural disasters in the United States
ⓘ
history of the Mississippi River ⓘ |
| precededBy | regional flooding in late 1926 ⓘ |
| significantDate |
April 1927
ⓘ
May 1927 ⓘ |
| startTime | 1926 ⓘ |
| statesAffected | 7 U.S. states ⓘ |
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: Great Mississippi Flood of 1927 Description of subject: The Great Mississippi Flood of 1927 was one of the most destructive river floods in U.S. history, inundating vast areas along the Mississippi River, displacing hundreds of thousands of people, and reshaping American flood control policy and race relations in the South.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.