Mount Tamalpais Watershed

E695488

open space preserve protected area watershed

Mount Tamalpais Watershed is a protected natural area on the slopes of Mount Tamalpais in Marin County, California, that safeguards local water supplies while offering extensive open space and recreational opportunities.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
Mount Tamalpais Watershed canonical	2
Mount Tamalpais area	1
Mount Tamalpais region	1

How this entity was disambiguated

This entity first appeared as the object of triple T7797772 — 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: Mount Tamalpais Watershed
Context triple: [Fairfax, California, hasNearbyProtectedArea, Mount Tamalpais Watershed]

A. Mount Tamalpais State Park
Mount Tamalpais State Park is a popular California state park on Mount Tamalpais in Marin County, known for its panoramic Bay Area views, extensive hiking and biking trails, and redwood and chaparral landscapes.
B. Catskill-Delaware Watershed
The Catskill-Delaware Watershed is a major protected watershed system in southeastern New York that supplies most of New York City’s unfiltered drinking water.
C. Hackensack River watershed
The Hackensack River watershed is the drainage area in northeastern New Jersey and southeastern New York that collects water flowing into the Hackensack River before it empties into Newark Bay.
D. Ramapo Mountain State Forest
Ramapo Mountain State Forest is a New Jersey state-managed woodland and recreation area known for its rugged terrain, hiking trails, and scenic views within the Ramapo Mountains.
E. Mill Valley
Mill Valley is a small, affluent city in the San Francisco Bay Area known for its redwood forests, arts scene, and proximity to Mount Tamalpais.
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: Mount Tamalpais Watershed
Target entity description: Mount Tamalpais Watershed is a protected natural area on the slopes of Mount Tamalpais in Marin County, California, that safeguards local water supplies while offering extensive open space and recreational opportunities.

A. Mount Tamalpais State Park
Mount Tamalpais State Park is a popular California state park on Mount Tamalpais in Marin County, known for its panoramic Bay Area views, extensive hiking and biking trails, and redwood and chaparral landscapes.
B. Catskill-Delaware Watershed
The Catskill-Delaware Watershed is a major protected watershed system in southeastern New York that supplies most of New York City’s unfiltered drinking water.
C. Hackensack River watershed
The Hackensack River watershed is the drainage area in northeastern New Jersey and southeastern New York that collects water flowing into the Hackensack River before it empties into Newark Bay.
D. Ramapo Mountain State Forest
Ramapo Mountain State Forest is a New Jersey state-managed woodland and recreation area known for its rugged terrain, hiking trails, and scenic views within the Ramapo Mountains.
E. Mill Valley
Mill Valley is a small, affluent city in the San Francisco Bay Area known for its redwood forests, arts scene, and proximity to Mount Tamalpais.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	open space preserve ⓘ protected area ⓘ watershed ⓘ
adjacentTo	Golden Gate National Recreation Area ⓘ Mount Tamalpais State Park ⓘ
contains	Alpine Lake ⓘ Bon Tempe Lake ⓘ Kent Lake ⓘ Lagunitas Lake ⓘ Lake Lagunitas ⓘ linked to: Lagunitas Lake Nicasio Reservoir ⓘ Phoenix Lake ⓘ
country	United States of America ⓘ
governedBy	Marin Municipal Water District watershed regulations ⓘ
hasAccessPoint	Natalie Coffin Greene Park entrance ⓘ Sky Oaks Road entrance ⓘ
hasConservationGoal	preservation of native biodiversity ⓘ protection of drinking water quality ⓘ
hasEcosystemType	chaparral ⓘ coastal forest ⓘ grassland ⓘ
hasFeature	fire roads network ⓘ oak woodlands ⓘ redwood groves ⓘ reservoir system ⓘ scenic vistas of Mount Tamalpais ⓘ
hasRegulation	dogs restricted in some areas ⓘ no swimming in reservoirs ⓘ restricted vehicle access ⓘ
hasTrailUsePolicy	designated hiking-only trails ⓘ multi-use fire roads ⓘ
hasUse	bicycling ⓘ hiking ⓘ horseback riding ⓘ nature observation ⓘ recreation ⓘ
locatedIn	Marin County, California ⓘ linked to: Marin County
locatedOn	slopes of Mount Tamalpais ⓘ
managedBy	Marin Municipal Water District ⓘ
near	Fairfax, California ⓘ Mill Valley, California ⓘ San Rafael, California ⓘ linked to: San Rafael
openToPublic	yes ⓘ
partOf	Mount Tamalpais region ⓘ linked to: Mount Tamalpais Watershed
primaryFunction	water supply protection ⓘ
protects	local water supplies ⓘ
secondaryFunction	open space conservation ⓘ wildlife habitat protection ⓘ
state	California ⓘ linked to: California, United States

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Fairfax, California → hasNearbyProtectedArea → Mount Tamalpais Watershed ⓘ

subject linked to: Fairfax

Panoramic Highway → locatedIn → Mount Tamalpais Watershed ⓘ

Lagunitas Creek → sourceRegion → Mount Tamalpais area ⓘ

linked to: Mount Tamalpais Watershed

Mount Tamalpais Watershed → partOf → Mount Tamalpais region ⓘ