San Francisco Bay hydrologic region

E1065619 UNEXPLORED

The San Francisco Bay hydrologic region is a major California water-management area encompassing the watersheds and infrastructure that drain into and supply the San Francisco Bay and its surrounding communities.

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All labels observed (7)

Label	Occurrences
San Francisco Bay watershed	16
San Francisco Bay hydrologic region canonical	7
San Francisco Bay hydrologic system	3
San Francisco Bay Area watersheds	1
San Francisco Bay drainage basin	1
South Bay hydrologic region	1
South San Francisco Bay watershed	1

How this entity was disambiguated

This entity first appeared as the object of triple T13834748 — 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: San Francisco Bay hydrologic region
Context triple: [South Bay Pumping Plant, locatedInHydrologicRegion, San Francisco Bay hydrologic region]

A. San Francisco Peninsula watershed
The San Francisco Peninsula watershed is the network of creeks, reservoirs, and drainage basins that collect and channel water across the San Francisco Peninsula into the Pacific Ocean and San Francisco Bay.
B. Monterey Bay watershed
The Monterey Bay watershed is the land and river system that drains into California’s Monterey Bay, encompassing diverse coastal, agricultural, and mountainous ecosystems that influence the bay’s marine environment.
C. San Francisco River basin
The San Francisco River basin is a watershed in Bogotá that drains the slopes of the Eastern Hills and channels water through part of the city’s urban area.
D. Sacramento–San Joaquin River Delta and Suisun Marsh
The Sacramento–San Joaquin River Delta and Suisun Marsh is a vast, ecologically rich estuarine region in Northern California that serves as a critical hub for the state’s water supply, wildlife habitat, and agricultural activity.
E. Sacramento–San Joaquin River Delta
The Sacramento–San Joaquin River Delta is a vast inland estuarine network of rivers, channels, and wetlands in Northern California that forms the state’s largest freshwater tidal ecosystem and a critical hub for its water supply and agriculture.
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: San Francisco Bay hydrologic region
Target entity description: The San Francisco Bay hydrologic region is a major California water-management area encompassing the watersheds and infrastructure that drain into and supply the San Francisco Bay and its surrounding communities.

A. San Francisco Peninsula watershed
The San Francisco Peninsula watershed is the network of creeks, reservoirs, and drainage basins that collect and channel water across the San Francisco Peninsula into the Pacific Ocean and San Francisco Bay.
B. Monterey Bay watershed
The Monterey Bay watershed is the land and river system that drains into California’s Monterey Bay, encompassing diverse coastal, agricultural, and mountainous ecosystems that influence the bay’s marine environment.
C. San Francisco River basin
The San Francisco River basin is a watershed in Bogotá that drains the slopes of the Eastern Hills and channels water through part of the city’s urban area.
D. Sacramento–San Joaquin River Delta and Suisun Marsh
The Sacramento–San Joaquin River Delta and Suisun Marsh is a vast, ecologically rich estuarine region in Northern California that serves as a critical hub for the state’s water supply, wildlife habitat, and agricultural activity.
E. Sacramento–San Joaquin River Delta
The Sacramento–San Joaquin River Delta is a vast inland estuarine network of rivers, channels, and wetlands in Northern California that forms the state’s largest freshwater tidal ecosystem and a critical hub for its water supply and agriculture.
F. None of above. chosen