Colusa Basin Drain
E234892
Colusa Basin Drain is an engineered waterway in California that collects agricultural drainage and floodwaters from the Colusa Basin and conveys them toward the Sacramento River.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Colusa Basin Drain canonical | 3 |
| Colusa Basin | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2095226 — 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: Colusa Basin Drain Context triple: [Sacramento River, tributary, Colusa Basin Drain]
-
A.
Amargosa River basin
The Amargosa River basin is an arid watershed in the Mojave Desert known for its intermittent river, unique desert ecosystems, and rare oases supporting specialized wildlife.
-
B.
Cosumnes River
The Cosumnes River is a relatively free-flowing river in Northern California known for its diverse riparian habitats and role in supporting regional wildlife and recreation.
-
C.
Ukiah
Ukiah is a small city in Northern California known as a regional hub for wine production, agriculture, and outdoor recreation in the Ukiah Valley.
-
D.
Mono River basin
The Mono River basin is a West African watershed spanning parts of Togo and Benin, known for its role in regional agriculture, hydropower, and biodiversity.
-
E.
Walker River
Walker River is a river in eastern California and western Nevada that flows from the Sierra Nevada through arid valleys into Walker Lake, providing vital water for ecosystems and agriculture in the region.
- 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: Colusa Basin Drain Target entity description: Colusa Basin Drain is an engineered waterway in California that collects agricultural drainage and floodwaters from the Colusa Basin and conveys them toward the Sacramento River.
-
A.
Amargosa River basin
The Amargosa River basin is an arid watershed in the Mojave Desert known for its intermittent river, unique desert ecosystems, and rare oases supporting specialized wildlife.
-
B.
Cosumnes River
The Cosumnes River is a relatively free-flowing river in Northern California known for its diverse riparian habitats and role in supporting regional wildlife and recreation.
-
C.
Ukiah
Ukiah is a small city in Northern California known as a regional hub for wine production, agriculture, and outdoor recreation in the Ukiah Valley.
-
D.
Mono River basin
The Mono River basin is a West African watershed spanning parts of Togo and Benin, known for its role in regional agriculture, hydropower, and biodiversity.
-
E.
Walker River
Walker River is a river in eastern California and western Nevada that flows from the Sierra Nevada through arid valleys into Walker Lake, providing vital water for ecosystems and agriculture in the region.
- F. None of above. chosen
Statements (35)
| Predicate | Object |
|---|---|
| instanceOf |
drainage canal
ⓘ
engineered waterway ⓘ |
| collectsWaterFrom |
Colusa Basin Drain
self-linksurface differs
ⓘ
surface form:
Colusa Basin
|
| connectedTo | Sacramento River ⓘ |
| conveysWaterToward | Sacramento River ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| engineeredFor |
conveyance of irrigation return flows
ⓘ
conveyance of stormwater ⓘ |
| flowsThrough |
Sacramento Valley
ⓘ
surface form:
Sacramento Valley, California
|
| hasEnvironmentalConcern |
nutrient loading to receiving waters
ⓘ
pesticide transport ⓘ transport of agricultural runoff ⓘ |
| hasPurpose |
reduce flooding in the Colusa Basin
ⓘ
remove excess irrigation water from farmland ⓘ |
| hasRegulatoryContext |
California water quality regulations
ⓘ
Sacramento River watershed management plans ⓘ |
| hasRelationTo |
Sacramento River watershed infrastructure
ⓘ
surface form:
Sacramento River flood control system
|
| hydrologicalRole | drainage channel ⓘ |
| infrastructureType | surface drainage system ⓘ |
| isSubjectOf | water quality monitoring programs in the Sacramento Valley ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Central Valley ⓘ Colusa Basin Drain self-linksurface differs ⓘ
surface form:
Colusa Basin
|
| locatedInHydrologicalSystem | Sacramento River Basin ⓘ |
| managedFor | drainage and flood management ⓘ |
| partOf | regional drainage infrastructure of the Sacramento Valley ⓘ |
| primaryFunction |
collect agricultural drainage
ⓘ
convey floodwaters ⓘ |
| regionServed |
Colusa County
ⓘ
Glenn County NERFINISHED ⓘ Sacramento Valley ⓘ |
| servesLandUse | agriculture ⓘ |
| waterType | surface water ⓘ |
| waterUse |
agricultural drainage conveyance
ⓘ
flood control ⓘ |
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: Colusa Basin Drain Description of subject: Colusa Basin Drain is an engineered waterway in California that collects agricultural drainage and floodwaters from the Colusa Basin and conveys them toward the Sacramento River.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Colusa Basin
this entity surface form:
Colusa Basin