Lower Colorado Region of the Bureau of Reclamation
E427267
The Lower Colorado Region of the Bureau of Reclamation is a regional office of the U.S. Bureau of Reclamation responsible for managing water and power resources along the lower Colorado River and its associated infrastructure.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lower Colorado Region of the Bureau of Reclamation canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4272220 — 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: Lower Colorado Region of the Bureau of Reclamation Context triple: [Parker Dam, managedBy, Lower Colorado Region of the Bureau of Reclamation]
-
A.
Lower Colorado River region
The Lower Colorado River region is an area along the lower course of the Colorado River in the southwestern United States and northwestern Mexico, traditionally inhabited by Indigenous peoples whose cultures and languages are part of the Yuman language family.
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B.
Colorado River Storage and Regulation System
The Colorado River Storage and Regulation System is a network of dams, reservoirs, and related infrastructure designed to manage, store, and control the flow of the Colorado River for water supply, flood control, and hydroelectric power generation.
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C.
Bureau of Reclamation
The Bureau of Reclamation is a U.S. federal agency responsible for managing water resources and operating dams, reservoirs, and irrigation projects primarily in the western United States.
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D.
Colorado River Basin
The Colorado River Basin is the vast watershed in the western United States and northern Mexico that collects and channels water from multiple states and tributaries into the Colorado River, supporting major ecosystems, agriculture, and cities across an arid region.
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E.
Colorado River Indian Tribes Reservation
The Colorado River Indian Tribes Reservation is a Native American reservation along the lower Colorado River that is home to a confederation of Mohave, Chemehuevi, Hopi, and Navajo tribes.
- 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: Lower Colorado Region of the Bureau of Reclamation Target entity description: The Lower Colorado Region of the Bureau of Reclamation is a regional office of the U.S. Bureau of Reclamation responsible for managing water and power resources along the lower Colorado River and its associated infrastructure.
-
A.
Lower Colorado River region
The Lower Colorado River region is an area along the lower course of the Colorado River in the southwestern United States and northwestern Mexico, traditionally inhabited by Indigenous peoples whose cultures and languages are part of the Yuman language family.
-
B.
Colorado River Storage and Regulation System
The Colorado River Storage and Regulation System is a network of dams, reservoirs, and related infrastructure designed to manage, store, and control the flow of the Colorado River for water supply, flood control, and hydroelectric power generation.
-
C.
Bureau of Reclamation
The Bureau of Reclamation is a U.S. federal agency responsible for managing water resources and operating dams, reservoirs, and irrigation projects primarily in the western United States.
-
D.
Colorado River Basin
The Colorado River Basin is the vast watershed in the western United States and northern Mexico that collects and channels water from multiple states and tributaries into the Colorado River, supporting major ecosystems, agriculture, and cities across an arid region.
-
E.
Colorado River Indian Tribes Reservation
The Colorado River Indian Tribes Reservation is a Native American reservation along the lower Colorado River that is home to a confederation of Mohave, Chemehuevi, Hopi, and Navajo tribes.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
administrative division
ⓘ
regional office ⓘ |
| alsoKnownAs |
Bureau of Reclamation Lower Colorado Region
NERFINISHED
ⓘ
Lower Colorado Region NERFINISHED ⓘ |
| coordinatesWith |
Colorado River Basin states
ⓘ
U.S. Section of the International Boundary and Water Commission NERFINISHED ⓘ irrigation and water districts in Arizona, California, and Nevada ⓘ tribal governments in the lower Colorado River Basin ⓘ |
| country | United States of America ⓘ |
| engagesIn |
endangered species habitat management related to Colorado River operations
ⓘ
environmental compliance and mitigation activities ⓘ river operations modeling and planning ⓘ water conservation programs ⓘ |
| follows | Colorado River Compact and related laws and agreements NERFINISHED ⓘ |
| headquartersLocation | Boulder City, Nevada NERFINISHED ⓘ |
| implements |
Colorado River water allocation policies
ⓘ
international water delivery obligations to Mexico on the Colorado River ⓘ |
| jurisdictionOver |
Colorado River mainstream below Lee Ferry
NERFINISHED
ⓘ
lower Colorado River NERFINISHED ⓘ |
| locatedInTimeZone | Pacific Time Zone ⓘ |
| manages |
hydropower resources
ⓘ
reclamation projects ⓘ water resources ⓘ |
| operates |
Davis Dam
NERFINISHED
ⓘ
Hoover Dam NERFINISHED ⓘ Imperial Dam NERFINISHED ⓘ Parker Dam NERFINISHED ⓘ |
| oversees |
Lower Colorado River Multi-Species Conservation Program
NERFINISHED
ⓘ
Lower Colorado River dams and reservoirs ⓘ river regulation and storage on the lower Colorado River ⓘ |
| parentAgency | United States Department of the Interior NERFINISHED ⓘ |
| partOf |
Lower Colorado Basin management framework
NERFINISHED
ⓘ
United States Bureau of Reclamation NERFINISHED ⓘ |
| responsibleFor |
implementation of Colorado River water delivery contracts
ⓘ
operation of major Colorado River reservoirs in the lower basin ⓘ power generation at Davis Dam ⓘ power generation at Hoover Dam ⓘ power generation at Parker Dam ⓘ water delivery to agricultural users along the lower Colorado River ⓘ water delivery to municipal and industrial users along the lower Colorado River ⓘ |
| serviceAreaIncludes |
Arizona
NERFINISHED
ⓘ
California NERFINISHED ⓘ Nevada NERFINISHED ⓘ portions of New Mexico ⓘ portions of Utah ⓘ |
| supports | flood control operations on the lower Colorado River ⓘ |
| website | https://www.usbr.gov/lc/ ⓘ |
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: Lower Colorado Region of the Bureau of Reclamation Description of subject: The Lower Colorado Region of the Bureau of Reclamation is a regional office of the U.S. Bureau of Reclamation responsible for managing water and power resources along the lower Colorado River and its associated infrastructure.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.