Floyd River
E526913
The Floyd River is a tributary of the Missouri River flowing through northwestern Iowa, known for its agricultural watershed and history of flooding.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Floyd River canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T3010671 — 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: Floyd River Context triple: [northwestern Iowa, contains, Floyd River]
-
A.
Verdigris River
The Verdigris River is a significant river in the central United States that flows through Kansas and Oklahoma, contributing to the Arkansas River watershed and regional navigation and irrigation systems.
-
B.
Neches River
The Neches River is a major waterway in eastern Texas that flows from near Tyler to the Gulf of Mexico, supporting regional ecosystems, industry, and recreation.
-
C.
Wilga River
The Wilga River is a small river in southern Poland that flows through the Lesser Poland region and passes near the town of Wieliczka before joining the Vistula.
-
D.
Rapid River
Rapid River is a watercourse that serves as one of the tributary rivers flowing into Lake of the Woods in North America.
-
E.
Plenty River
The Plenty River is a waterway in Victoria, Australia, that flows through Melbourne’s northeastern suburbs before joining the Yarra 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: Floyd River Target entity description: The Floyd River is a tributary of the Missouri River flowing through northwestern Iowa, known for its agricultural watershed and history of flooding.
-
A.
Verdigris River
The Verdigris River is a significant river in the central United States that flows through Kansas and Oklahoma, contributing to the Arkansas River watershed and regional navigation and irrigation systems.
-
B.
Neches River
The Neches River is a major waterway in eastern Texas that flows from near Tyler to the Gulf of Mexico, supporting regional ecosystems, industry, and recreation.
-
C.
Wilga River
The Wilga River is a small river in southern Poland that flows through the Lesser Poland region and passes near the town of Wieliczka before joining the Vistula.
-
D.
Rapid River
Rapid River is a watercourse that serves as one of the tributary rivers flowing into Lake of the Woods in North America.
-
E.
Plenty River
The Plenty River is a waterway in Victoria, Australia, that flows through Melbourne’s northeastern suburbs before joining the Yarra River.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinSize | approximately 886 square miles ⓘ |
| confluenceLocation | Sioux City, Iowa NERFINISHED ⓘ |
| continent | North America ⓘ |
| country | United States of America ⓘ |
| crosses | northwestern Iowa ⓘ |
| drainageBasinUse |
livestock production
ⓘ
row-crop agriculture ⓘ |
| flowsInto | Missouri River NERFINISHED ⓘ |
| flowsThrough |
Plymouth County, Iowa
NERFINISHED
ⓘ
Sioux County, Iowa NERFINISHED ⓘ Woodbury County, Iowa NERFINISHED ⓘ |
| hasFloodControlStructure | levees near Sioux City ⓘ |
| hasFloodEvent | significant flooding in Sioux City area ⓘ |
| hasRecreation |
boating in some reaches
ⓘ
fishing ⓘ |
| hasTributary |
East Branch Floyd River
NERFINISHED
ⓘ
West Branch Floyd River NERFINISHED ⓘ |
| knownFor |
agricultural watershed
ⓘ
history of flooding ⓘ |
| length | approximately 112 miles ⓘ |
| locatedIn |
Iowa
ⓘ
northwestern Iowa NERFINISHED ⓘ |
| mouthElevation | about 1,070 feet ⓘ |
| mouthLocatedIn |
Sioux City, Iowa
NERFINISHED
ⓘ
Woodbury County, Iowa NERFINISHED ⓘ |
| namedAfter |
Charles Floyd
NERFINISHED
ⓘ
Sergeant Charles Floyd of the Lewis and Clark Expedition NERFINISHED ⓘ |
| partOf | Missouri River watershed NERFINISHED ⓘ |
| region | Midwestern United States ⓘ |
| riverMouth | Missouri River at Sioux City, Iowa NERFINISHED ⓘ |
| riverSystem | Missouri River basin NERFINISHED ⓘ |
| sourceElevation | about 1,600 feet ⓘ |
| sourceLocation | northern Sioux County, Iowa NERFINISHED ⓘ |
| state | Iowa ⓘ |
| tributaryOf | Missouri River NERFINISHED ⓘ |
| waterQualityConcern |
nutrient runoff
ⓘ
sediment load ⓘ |
| watershedLandUse | predominantly agricultural ⓘ |
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: Floyd River Description of subject: The Floyd River is a tributary of the Missouri River flowing through northwestern Iowa, known for its agricultural watershed and history of flooding.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.