Adams Tunnel
E530094
Adams Tunnel is a major transmountain water diversion tunnel in Colorado that conveys Colorado River water beneath the Continental Divide to the eastern slope as part of a large federal water project.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Adams Tunnel canonical | 2 |
| Adams Tunnel East Portal | 1 |
| Adams Tunnel West Portal | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5525178 — 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: Adams Tunnel Context triple: [Colorado-Big Thompson Project, hasComponent, Adams Tunnel]
-
A.
O'Neill Tunnel
The O'Neill Tunnel is a major highway tunnel in downtown Boston that carries Interstate 93 beneath the city as part of the Big Dig project.
-
B.
Clyde Tunnel
The Clyde Tunnel is a road tunnel in Glasgow, Scotland, carrying vehicular traffic beneath the River Clyde to connect the city’s north and south banks.
-
C.
Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
-
D.
Carmel Tunnels
The Carmel Tunnels are a system of toll road tunnels in Haifa, Israel, that provide a fast east–west route beneath the Carmel mountain range to ease urban traffic congestion.
-
E.
Robertson Tunnel
Robertson Tunnel is a major light rail tunnel in Portland, Oregon, carrying MAX trains through the West Hills between downtown and the city’s western suburbs.
- 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: Adams Tunnel Target entity description: Adams Tunnel is a major transmountain water diversion tunnel in Colorado that conveys Colorado River water beneath the Continental Divide to the eastern slope as part of a large federal water project.
-
A.
O'Neill Tunnel
The O'Neill Tunnel is a major highway tunnel in downtown Boston that carries Interstate 93 beneath the city as part of the Big Dig project.
-
B.
Clyde Tunnel
The Clyde Tunnel is a road tunnel in Glasgow, Scotland, carrying vehicular traffic beneath the River Clyde to connect the city’s north and south banks.
-
C.
Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
-
D.
Carmel Tunnels
The Carmel Tunnels are a system of toll road tunnels in Haifa, Israel, that provide a fast east–west route beneath the Carmel mountain range to ease urban traffic congestion.
-
E.
Robertson Tunnel
Robertson Tunnel is a major light rail tunnel in Portland, Oregon, carrying MAX trains through the West Hills between downtown and the city’s western suburbs.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
transmountain tunnel
ⓘ
water diversion tunnel ⓘ |
| associatedWith | Northern Colorado Water Conservancy District ⓘ |
| benefits |
Front Range communities
ⓘ
linked to:
Front Range Urban Corridor
|
| constructionStartDate | 1940 ⓘ |
| conveysWaterTo |
South Platte River basin
ⓘ
linked to:
South Platte River
eastern slope of Colorado ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses |
Continental Divide of the Americas
ⓘ
linked to:
Continental Divide
|
| elevationDifference | approximately 800 feet between inlet and outlet ⓘ |
| endPoint |
Estes Park area
ⓘ
linked to:
Estes Park, Colorado
|
| engineeringType | pressure tunnel ⓘ |
| feeds |
Estes Powerplant
ⓘ
Marys Lake Powerplant ⓘ |
| hasInletStructure |
Adams Tunnel West Portal
ⓘ
linked to:
Adams Tunnel
|
| hasOutletStructure |
Adams Tunnel East Portal
ⓘ
linked to:
Adams Tunnel
|
| length |
approximately 13 miles
ⓘ
approximately 21 kilometers ⓘ |
| locatedIn |
Colorado
ⓘ
Grand County, Colorado ⓘ Larimer County, Colorado ⓘ Rocky Mountains ⓘ |
| managesWaterFrom | Colorado River ⓘ |
| namedAfter |
Alva B. Adams
ⓘ
linked to:
Alva Adams
|
| openingDate | 1947 ⓘ |
| operator |
U.S. Bureau of Reclamation
ⓘ
linked to:
Bureau of Reclamation
|
| partOf |
Colorado–Big Thompson Project
ⓘ
linked to:
Colorado-Big Thompson Project
federal water project ⓘ transbasin diversion from Colorado River basin to South Platte River basin ⓘ |
| passesNear |
Estes Park, Colorado
ⓘ
Grand Lake, Colorado ⓘ
linked to:
Grand Lake
|
| passesUnder | Rocky Mountain National Park ⓘ |
| projectOwner |
United States Bureau of Reclamation
ⓘ
linked to:
Bureau of Reclamation
|
| purpose |
hydroelectric power generation
ⓘ
irrigation ⓘ municipal water supply ⓘ |
| regionServed | Northern Colorado ⓘ |
| startPoint | Grand Lake ⓘ |
| status | in operation ⓘ |
| waterSource | Colorado River headwaters ⓘ |
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: Adams Tunnel Description of subject: Adams Tunnel is a major transmountain water diversion tunnel in Colorado that conveys Colorado River water beneath the Continental Divide to the eastern slope as part of a large federal water project.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Adams Tunnel
linked to: Adams Tunnel