Coon Rapids Dam
E821911
Coon Rapids Dam is a historic hydroelectric dam and regional park feature spanning the Mississippi River in Coon Rapids, Minnesota.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Coon Rapids Dam canonical | 3 |
| Coon Rapids Dam Visitor Center | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9790904 — 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: Coon Rapids Dam Context triple: [Coon Rapids, Minnesota, hasLandmark, Coon Rapids Dam]
-
A.
Coralville Dam
Coralville Dam is a flood-control and recreational dam on the Iowa River in Iowa, known for exposing the nearby Devonian Fossil Gorge after major flood events.
-
B.
Priest Rapids Dam
Priest Rapids Dam is a hydroelectric dam on the Columbia River in Washington State that generates power and helps regulate river flow as part of the region’s larger hydropower system.
-
C.
Post Falls Dam
Post Falls Dam is a hydroelectric dam on the Spokane River in northern Idaho that helps generate power and regulate water levels in the region.
-
D.
Saylorville Dam
Saylorville Dam is a large flood-control and recreation dam on the Des Moines River in central Iowa, forming Saylorville Lake just upstream of Des Moines.
-
E.
Prairie du Sac Dam
Prairie du Sac Dam is a hydroelectric dam on the Wisconsin River in Wisconsin, known for power generation, river flow regulation, and its associated recreational and wildlife areas.
- 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: Coon Rapids Dam Target entity description: Coon Rapids Dam is a historic hydroelectric dam and regional park feature spanning the Mississippi River in Coon Rapids, Minnesota.
-
A.
Coralville Dam
Coralville Dam is a flood-control and recreational dam on the Iowa River in Iowa, known for exposing the nearby Devonian Fossil Gorge after major flood events.
-
B.
Priest Rapids Dam
Priest Rapids Dam is a hydroelectric dam on the Columbia River in Washington State that generates power and helps regulate river flow as part of the region’s larger hydropower system.
-
C.
Post Falls Dam
Post Falls Dam is a hydroelectric dam on the Spokane River in northern Idaho that helps generate power and regulate water levels in the region.
-
D.
Saylorville Dam
Saylorville Dam is a large flood-control and recreation dam on the Des Moines River in central Iowa, forming Saylorville Lake just upstream of Des Moines.
-
E.
Prairie du Sac Dam
Prairie du Sac Dam is a hydroelectric dam on the Wisconsin River in Wisconsin, known for power generation, river flow regulation, and its associated recreational and wildlife areas.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
historic place
ⓘ
hydroelectric dam ⓘ river dam ⓘ |
| constructionStart | 1912 ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses | Mississippi River ⓘ |
| elevationAboveSeaLevel | approximately 830 feet ⓘ |
| formerOwner |
Northern States Power Company
ⓘ
linked to:
Xcel Energy
|
| hasFeature |
fish barrier
ⓘ
pedestrian bridge ⓘ powerhouse ⓘ spillway ⓘ |
| hasPart | Coon Rapids Dam Regional Park ⓘ |
| hasRecreationalActivity |
biking
ⓘ
birdwatching ⓘ cross-country skiing ⓘ fishing ⓘ hiking ⓘ picnicking ⓘ |
| hasTrailConnection |
Anoka County regional trail system
ⓘ
Mississippi River Regional Trail ⓘ
linked to:
Mississippi River Trail
Three Rivers Park District trail system ⓘ |
| hasVisitorCenter |
Coon Rapids Dam Visitor Center
ⓘ
linked to:
Coon Rapids Dam
|
| isPartOf | Mississippi National River and Recreation Area ⓘ |
| locatedDownstreamOf | Anoka, Minnesota ⓘ |
| locatedIn |
Anoka County, Minnesota
ⓘ
Coon Rapids, Minnesota ⓘ
linked to:
Coon Rapids, Minnesota, United States
Minnesota ⓘ United States ⓘ
linked to:
United States of America
|
| locatedUpstreamOf |
Minneapolis, Minnesota
ⓘ
linked to:
Minneapolis
|
| near |
Brooklyn Park, Minnesota
ⓘ
linked to:
Brooklyn Park, Minnesota, United States
|
| notableFor |
historic hydroelectric power generation
ⓘ
role in regional recreation and conservation ⓘ spanning the Mississippi River at Coon Rapids ⓘ |
| opened | 1913 ⓘ |
| operator | Three Rivers Park District ⓘ |
| originalUse | hydroelectric power for Minneapolis streetcar system ⓘ |
| owner |
State of Minnesota
ⓘ
linked to:
Minnesota
|
| partOf | Coon Rapids Dam Regional Park ⓘ |
| river | Mississippi River ⓘ |
| status | in use ⓘ |
| usedFor |
flood control
ⓘ
hydroelectric power generation ⓘ recreation ⓘ river navigation barrier ⓘ |
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: Coon Rapids Dam Description of subject: Coon Rapids Dam is a historic hydroelectric dam and regional park feature spanning the Mississippi River in Coon Rapids, Minnesota.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.