Coyote Valley Dam
E804674
Coyote Valley Dam is a large earth-fill dam in Mendocino County, California, that forms Lake Mendocino for water supply, flood control, and recreation on the Russian River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Coyote Valley Dam canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T9227518 — 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: Coyote Valley Dam Context triple: [Russian River, hasDam, Coyote Valley Dam]
-
A.
La Mesa Dam
La Mesa Dam is a major water reservoir in Quezon City, Philippines, that supplies a significant portion of Metro Manila’s drinking water.
-
B.
Horse Mesa Dam
Horse Mesa Dam is a concrete thin-arch dam on Arizona’s Salt River that forms Apache Lake and helps provide hydroelectric power, water storage, and flood control in the region.
-
C.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
-
D.
Fengman Dam
Fengman Dam is a large hydroelectric gravity dam on the Songhua River in Jilin Province, China, known for its significant role in regional power generation and flood control.
-
E.
J.C. Boyle Dam
J.C. Boyle Dam is a hydroelectric dam on the Klamath River in southern Oregon, known for power generation and its role in regional water and environmental management.
- 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: Coyote Valley Dam Target entity description: Coyote Valley Dam is a large earth-fill dam in Mendocino County, California, that forms Lake Mendocino for water supply, flood control, and recreation on the Russian River.
-
A.
La Mesa Dam
La Mesa Dam is a major water reservoir in Quezon City, Philippines, that supplies a significant portion of Metro Manila’s drinking water.
-
B.
Horse Mesa Dam
Horse Mesa Dam is a concrete thin-arch dam on Arizona’s Salt River that forms Apache Lake and helps provide hydroelectric power, water storage, and flood control in the region.
-
C.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
-
D.
Fengman Dam
Fengman Dam is a large hydroelectric gravity dam on the Songhua River in Jilin Province, China, known for its significant role in regional power generation and flood control.
-
E.
J.C. Boyle Dam
J.C. Boyle Dam is a hydroelectric dam on the Klamath River in southern Oregon, known for power generation and its role in regional water and environmental management.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
earth-fill dam
ⓘ
embankment dam ⓘ |
| associatedReservoir | Lake Mendocino ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| country |
United States
ⓘ
linked to:
United States of America
|
| formsReservoir | Lake Mendocino ⓘ |
| hasEnvironmentalImpact |
creation of reservoir habitat at Lake Mendocino
ⓘ
modification of Russian River flow regime ⓘ |
| hasFeature |
campgrounds at Lake Mendocino
ⓘ
earth-fill embankment ⓘ reservoir boat ramps ⓘ |
| hasFunction |
drought storage
ⓘ
flood mitigation for Russian River communities ⓘ |
| hasRecreationArea |
Lake Mendocino recreation area
ⓘ
linked to:
Lake Mendocino
|
| hasReservoirUse |
agricultural water supply
ⓘ
fishing ⓘ flood storage ⓘ municipal water supply ⓘ recreational boating ⓘ |
| hasUse | groundwater recharge support via reservoir releases ⓘ |
| impounds |
Coyote Creek (Russian River tributary)
ⓘ
Russian River ⓘ |
| isInfrastructureType | water resources infrastructure ⓘ |
| isPartOf | federal flood control system in California ⓘ |
| locatedIn |
Mendocino County, California
ⓘ
linked to:
Mendocino County
|
| locatedInCounty | Mendocino County ⓘ |
| locatedInRegion |
North Coast region of California
ⓘ
linked to:
North Coast of California
|
| locatedInWatershed | Russian River watershed ⓘ |
| locatedNear | Ukiah, California ⓘ |
| locatedOnRiver | Russian River ⓘ |
| managingAgency |
United States Army Corps of Engineers
ⓘ
linked to:
U.S. Army Corps of Engineers
|
| nearCity | Ukiah ⓘ |
| operatedBy |
United States Army Corps of Engineers
ⓘ
linked to:
U.S. Army Corps of Engineers
|
| partOf | Russian River Project ⓘ |
| primaryPurpose |
flood control
ⓘ
recreation ⓘ water supply ⓘ |
| region | Northern California ⓘ |
| riverBasin |
Russian River basin
ⓘ
linked to:
Russian River
|
| state |
California
ⓘ
linked to:
California, United States
|
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: Coyote Valley Dam Description of subject: Coyote Valley Dam is a large earth-fill dam in Mendocino County, California, that forms Lake Mendocino for water supply, flood control, and recreation on the Russian River.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.