Mattawa River
E705465
The Mattawa River is a historic waterway in Ontario, Canada, long used as a key travel and trade route by Indigenous peoples and fur traders connecting the Ottawa River to the Great Lakes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mattawa River canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5421063 — 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: Mattawa River Context triple: [District of Nipissing (southern portion), containsWaterBody, Mattawa River]
-
A.
Mettawee River
The Mettawee River is a tributary in the northeastern United States that flows through parts of Vermont and New York before joining the Poultney River and ultimately Lake Champlain.
-
B.
Macatawa River
The Macatawa River is a waterway in western Michigan that flows through the city of Holland into Lake Macatawa, providing scenic and recreational value to the surrounding area.
-
C.
Muscoot River
The Muscoot River is a tributary in southeastern New York that flows through Westchester County into the Croton River as part of the Croton River watershed.
-
D.
Manitowoc River
The Manitowoc River is a river in eastern Wisconsin that flows through Manitowoc County and empties into Lake Michigan at the city of Manitowoc.
-
E.
Pemigewasset River
The Pemigewasset River is a major river in central New Hampshire that drains the White Mountains and forms a principal headwater of the Merrimack 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: Mattawa River Target entity description: The Mattawa River is a historic waterway in Ontario, Canada, long used as a key travel and trade route by Indigenous peoples and fur traders connecting the Ottawa River to the Great Lakes.
-
A.
Mettawee River
The Mettawee River is a tributary in the northeastern United States that flows through parts of Vermont and New York before joining the Poultney River and ultimately Lake Champlain.
-
B.
Macatawa River
The Macatawa River is a waterway in western Michigan that flows through the city of Holland into Lake Macatawa, providing scenic and recreational value to the surrounding area.
-
C.
Muscoot River
The Muscoot River is a tributary in southeastern New York that flows through Westchester County into the Croton River as part of the Croton River watershed.
-
D.
Manitowoc River
The Manitowoc River is a river in eastern Wisconsin that flows through Manitowoc County and empties into Lake Michigan at the city of Manitowoc.
-
E.
Pemigewasset River
The Pemigewasset River is a major river in central New Hampshire that drains the White Mountains and forms a principal headwater of the Merrimack River.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry | Canada ⓘ |
| connects |
Great Lakes basin
NERFINISHED
ⓘ
Ottawa River NERFINISHED ⓘ |
| conservationAuthority | North Bay-Mattawa Conservation Authority NERFINISHED ⓘ |
| country | Canada ⓘ |
| crosses | Nipissing District NERFINISHED ⓘ |
| designationYear | 1988 ⓘ |
| flowsInto | Ottawa River NERFINISHED ⓘ |
| geology | Precambrian bedrock ⓘ |
| governedBy | Province of Ontario NERFINISHED ⓘ |
| hasFeature |
gorges
ⓘ
portage routes ⓘ rapids ⓘ |
| hasIsland | various small islands ⓘ |
| hasTributary |
Amable du Fond River
NERFINISHED
ⓘ
Bissett Creek NERFINISHED ⓘ Boom Creek NERFINISHED ⓘ La Vase River NERFINISHED ⓘ Talon River NERFINISHED ⓘ |
| hasWatershed | Mattawa River watershed NERFINISHED ⓘ |
| historicalFunction | link between St. Lawrence River system and Great Lakes ⓘ |
| historicalUse |
Indigenous travel route
ⓘ
fur trade route ⓘ |
| length | approximately 76 kilometres ⓘ |
| locatedIn |
Northeastern Ontario
NERFINISHED
ⓘ
Ontario ⓘ |
| mouthLocation | near Mattawa, Ontario ⓘ |
| nameEtymology | derived from an Algonquin word meaning "meeting of waterways" or "junction of rivers" ⓘ |
| nearbyCity | North Bay, Ontario NERFINISHED ⓘ |
| nearbyTown | Mattawa, Ontario NERFINISHED ⓘ |
| notableFor |
historic canoe route
ⓘ
role in Canadian fur trade ⓘ |
| partOf | Ottawa River drainage basin NERFINISHED ⓘ |
| passesThrough | Mattawa River Provincial Park NERFINISHED ⓘ |
| protectedStatus | Canadian Heritage River NERFINISHED ⓘ |
| recreation |
camping
ⓘ
canoeing ⓘ fishing ⓘ kayaking ⓘ |
| region | Canadian Shield NERFINISHED ⓘ |
| source | Trout Lake NERFINISHED ⓘ |
| sourceLocation | near North Bay, Ontario ⓘ |
| usedBy |
Algonquin peoples
NERFINISHED
ⓘ
Ojibwe peoples NERFINISHED ⓘ fur traders ⓘ voyageurs ⓘ |
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: Mattawa River Description of subject: The Mattawa River is a historic waterway in Ontario, Canada, long used as a key travel and trade route by Indigenous peoples and fur traders connecting the Ottawa River to the Great Lakes.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.