Cedar–Sammamish watershed
E804294
The Cedar–Sammamish watershed is a major river basin in the Seattle–King County region of Washington State that drains the Cedar and Sammamish river systems into Lake Washington and ultimately Puget Sound.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Cedar–Sammamish watershed canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T9510877 — 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: Cedar–Sammamish watershed Context triple: [Sammamish River, partOf, Cedar–Sammamish watershed]
-
A.
Green–Duwamish River watershed
The Green–Duwamish River watershed is a major drainage basin in King County, Washington, encompassing the Green and Duwamish rivers and their tributaries as they flow from the Cascade Range through suburban and industrial areas into Puget Sound.
-
B.
Sammamish River
The Sammamish River is a short river in King County, Washington, that drains Lake Sammamish and flows northwest through suburban communities before emptying into Lake Washington.
-
C.
Okanogan/Okanagan watershed
The Okanogan/Okanagan watershed is a transboundary river basin spanning north-central Washington State and south-central British Columbia, encompassing the Okanagan and Okanogan river systems, lakes, and surrounding landscapes that drain into the Columbia River.
-
D.
Sammamish
Sammamish is a suburban city in Washington State known for its affluent residential communities, highly rated schools, and proximity to the Seattle metropolitan area.
-
E.
Snohomish River
The Snohomish River is a major river in western Washington State that flows through Snohomish County into Puget Sound, helping drain the Cascade Range and supporting regional ecosystems and communities.
- 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: Cedar–Sammamish watershed Target entity description: The Cedar–Sammamish watershed is a major river basin in the Seattle–King County region of Washington State that drains the Cedar and Sammamish river systems into Lake Washington and ultimately Puget Sound.
-
A.
Green–Duwamish River watershed
The Green–Duwamish River watershed is a major drainage basin in King County, Washington, encompassing the Green and Duwamish rivers and their tributaries as they flow from the Cascade Range through suburban and industrial areas into Puget Sound.
-
B.
Sammamish River
The Sammamish River is a short river in King County, Washington, that drains Lake Sammamish and flows northwest through suburban communities before emptying into Lake Washington.
-
C.
Okanogan/Okanagan watershed
The Okanogan/Okanagan watershed is a transboundary river basin spanning north-central Washington State and south-central British Columbia, encompassing the Okanagan and Okanogan river systems, lakes, and surrounding landscapes that drain into the Columbia River.
-
D.
Sammamish
Sammamish is a suburban city in Washington State known for its affluent residential communities, highly rated schools, and proximity to the Seattle metropolitan area.
-
E.
Snohomish River
The Snohomish River is a major river in western Washington State that flows through Snohomish County into Puget Sound, helping drain the Cascade Range and supporting regional ecosystems and communities.
- F. None of above. chosen
Statements (66)
| Predicate | Object |
|---|---|
| instanceOf |
river basin
ⓘ
watershed ⓘ |
| containsInfrastructure |
Chester Morse Lake
NERFINISHED
ⓘ
Masonry Dam NERFINISHED ⓘ |
| containsProtectedArea | Cedar River Municipal Watershed NERFINISHED ⓘ |
| containsWaterBody |
Arboretum Creek (Seattle)
NERFINISHED
ⓘ
Bear Creek (King County, Washington) NERFINISHED ⓘ Bear Creek basin (King County, Washington) NERFINISHED ⓘ Cedar River NERFINISHED ⓘ Coal Creek (King County, Washington) NERFINISHED ⓘ Ebright Creek NERFINISHED ⓘ Evans Creek (King County, Washington) NERFINISHED ⓘ Forbes Creek (Kirkland, Washington) NERFINISHED ⓘ George Davis Creek NERFINISHED ⓘ Issaquah Creek NERFINISHED ⓘ Juanita Creek NERFINISHED ⓘ Kelsey Creek (Washington) NERFINISHED ⓘ Lake Sammamish NERFINISHED ⓘ Lake Washington NERFINISHED ⓘ Laughing Jacobs Creek NERFINISHED ⓘ Lewis Creek (Bellevue, Washington) NERFINISHED ⓘ Longfellow Creek (Seattle) NERFINISHED ⓘ Mapes Creek (Seattle) NERFINISHED ⓘ May Creek (King County, Washington) NERFINISHED ⓘ North Creek (Washington) NERFINISHED ⓘ Patterson Creek (King County, Washington) NERFINISHED ⓘ Pipers Creek (Seattle) NERFINISHED ⓘ Ravenna Creek NERFINISHED ⓘ Rock Creek (Cedar River tributary) NERFINISHED ⓘ Sammamish River NERFINISHED ⓘ Swamp Creek (Washington) NERFINISHED ⓘ Taylor Creek (Seattle) NERFINISHED ⓘ Thornton Creek (Seattle) NERFINISHED ⓘ Vasa Creek (Bellevue, Washington) NERFINISHED ⓘ Yarrow Creek (Washington) NERFINISHED ⓘ Yesler Creek (Seattle) NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| drainsInto |
Lake Washington
NERFINISHED
ⓘ
Puget Sound NERFINISHED ⓘ |
| drainsRiver |
Cedar River
NERFINISHED
ⓘ
Sammamish River NERFINISHED ⓘ |
| hasLandUse |
forested
ⓘ
protected municipal watershed ⓘ suburban ⓘ urban ⓘ |
| historicalConnection | Black River (King County, Washington) NERFINISHED ⓘ |
| locatedIn |
King County
ⓘ
surface form:
King County, Washington
Seattle metropolitan area NERFINISHED ⓘ Washington ⓘ
surface form:
Washington State
|
| majorCityInWatershed |
Bellevue, Washington
NERFINISHED
ⓘ
Issaquah, Washington NERFINISHED ⓘ Kirkland, Washington NERFINISHED ⓘ Redmond, Washington NERFINISHED ⓘ Renton, Washington NERFINISHED ⓘ Seattle, Washington NERFINISHED ⓘ |
| managingAgency |
City of Seattle
NERFINISHED
ⓘ
King County Department of Natural Resources and Parks NERFINISHED ⓘ |
| partOf | Puget Sound drainage basin NERFINISHED ⓘ |
| partOfHydrologicUnit | Lake Washington drainage basin NERFINISHED ⓘ |
| primaryOutflow | Lake Washington Ship Canal NERFINISHED ⓘ |
| providesService | drinking water supply for Seattle region ⓘ |
| supportsSpecies |
Chinook salmon
NERFINISHED
ⓘ
Coastal cutthroat trout NERFINISHED ⓘ Coho salmon NERFINISHED ⓘ Sockeye salmon NERFINISHED ⓘ Steelhead trout 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: Cedar–Sammamish watershed Description of subject: The Cedar–Sammamish watershed is a major river basin in the Seattle–King County region of Washington State that drains the Cedar and Sammamish river systems into Lake Washington and ultimately Puget Sound.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.