Colorado River (Nevada segment)
E519182
The Colorado River (Nevada segment) is the stretch of the Colorado River that flows along and through southern Nevada, including the area impounded by Hoover Dam to form Lake Mead and providing critical water and hydroelectric resources to the region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Colorado River (Nevada segment) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5382747 — 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: Colorado River (Nevada segment) Context triple: [Southern Nevada, contains, Colorado River (Nevada segment)]
-
A.
Reno River
The Reno River is a watercourse in northern Italy that flows through the Emilia-Romagna region, including the city of Bologna, before joining the Reno basin on its way toward the Adriatic Sea.
-
B.
Mojave River
The Mojave River is an intermittent river in the Mojave Desert of California that mostly flows underground and provides a crucial water source for the region’s arid ecosystems and communities.
-
C.
Gunnison River
The Gunnison River is a major tributary of the Colorado River in western Colorado, known for carving the dramatic Black Canyon and supporting recreation, irrigation, and hydropower in the region.
-
D.
Humboldt River
The Humboldt River is a major river in northern Nevada that flows westward across the Great Basin, serving as an important historical route and water source in an otherwise arid region.
-
E.
Owyhee
Owyhee is a small unincorporated community and census-designated place in northeastern Nevada, located on the Duck Valley Indian Reservation near the Idaho border.
- 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: Colorado River (Nevada segment) Target entity description: The Colorado River (Nevada segment) is the stretch of the Colorado River that flows along and through southern Nevada, including the area impounded by Hoover Dam to form Lake Mead and providing critical water and hydroelectric resources to the region.
-
A.
Reno River
The Reno River is a watercourse in northern Italy that flows through the Emilia-Romagna region, including the city of Bologna, before joining the Reno basin on its way toward the Adriatic Sea.
-
B.
Mojave River
The Mojave River is an intermittent river in the Mojave Desert of California that mostly flows underground and provides a crucial water source for the region’s arid ecosystems and communities.
-
C.
Gunnison River
The Gunnison River is a major tributary of the Colorado River in western Colorado, known for carving the dramatic Black Canyon and supporting recreation, irrigation, and hydropower in the region.
-
D.
Humboldt River
The Humboldt River is a major river in northern Nevada that flows westward across the Great Basin, serving as an important historical route and water source in an otherwise arid region.
-
E.
Owyhee
Owyhee is a small unincorporated community and census-designated place in northeastern Nevada, located on the Duck Valley Indian Reservation near the Idaho border.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf | river segment ⓘ |
| basin | Colorado River Basin NERFINISHED ⓘ |
| contains | Lake Mead NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| downstreamFeature | Lake Mohave NERFINISHED ⓘ |
| downstreamFrom | Grand Canyon NERFINISHED ⓘ |
| elevationControlledBy | Hoover Dam operations ⓘ |
| flowsThrough | Clark County, Nevada NERFINISHED ⓘ |
| formsBorderWith |
Arizona
NERFINISHED
ⓘ
California NERFINISHED ⓘ |
| governedBy |
Boulder Canyon Project Act
NERFINISHED
ⓘ
Colorado River Compact NERFINISHED ⓘ |
| hasInfrastructure |
Davis Dam
NERFINISHED
ⓘ
Hoover Dam NERFINISHED ⓘ |
| hasLegalDesignation | interstate watercourse ⓘ |
| hasReservoir |
Lake Mead
NERFINISHED
ⓘ
Lake Mohave NERFINISHED ⓘ |
| hasUse |
cooling water for power plants
ⓘ
industrial water supply ⓘ |
| impoundedBy | Hoover Dam NERFINISHED ⓘ |
| isMajorComponentOf | Lower Colorado River system NERFINISHED ⓘ |
| locatedInDesert | Mojave Desert NERFINISHED ⓘ |
| near | Las Vegas, Nevada NERFINISHED ⓘ |
| partOf | Colorado River NERFINISHED ⓘ |
| recreationActivity |
boating
ⓘ
fishing ⓘ swimming ⓘ |
| recreationArea | Lake Mead National Recreation Area NERFINISHED ⓘ |
| regulatedBy | U.S. Bureau of Reclamation NERFINISHED ⓘ |
| state | Nevada ⓘ |
| subjectTo |
drought conditions
ⓘ
endangered species protections ⓘ federal environmental regulations ⓘ water allocation agreements ⓘ |
| supports |
fisheries
ⓘ
wildlife habitat ⓘ |
| upstreamFrom | Colorado River (California–Arizona border segment) NERFINISHED ⓘ |
| usedFor |
hydroelectric power generation
ⓘ
irrigation ⓘ municipal water supply ⓘ recreation ⓘ |
| waterSourceFor | Southern Nevada Water Authority NERFINISHED ⓘ |
| waterSupplierTo |
Las Vegas Valley
NERFINISHED
ⓘ
Southern Nevada NERFINISHED ⓘ |
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: Colorado River (Nevada segment) Description of subject: The Colorado River (Nevada segment) is the stretch of the Colorado River that flows along and through southern Nevada, including the area impounded by Hoover Dam to form Lake Mead and providing critical water and hydroelectric resources to the region.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Southern Nevada