Mahaweli River drainage basin

E1569401 UNEXPLORED

The Mahaweli River drainage basin is Sri Lanka’s largest river basin, encompassing the extensive network of tributaries and catchment areas that feed the country’s longest river, the Mahaweli.

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All labels observed (4)

Label	Occurrences
Mahaweli River basin	6
Mahaweli River drainage basin canonical	1
Mahaweli drainage basin	1
Mahaweli river basin	1

How this entity was disambiguated

This entity first appeared as the object of triple T22420699 — 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: Mahaweli River drainage basin
Context triple: [Ulhitiya Oya, drainageBasin, Mahaweli River drainage basin]

A. Kelani River basin
The Kelani River basin is a major river catchment area in western Sri Lanka that supports dense populations, agriculture, and industry while providing a key source of water and hydropower.
B. Mahi River basin
The Mahi River basin is the drainage area of the Mahi River in western India, spanning parts of Madhya Pradesh, Rajasthan, and Gujarat and supporting agriculture, settlements, and ecosystems along its course.
C. Mahananda River basin
The Mahananda River basin is a river drainage region in eastern India and parts of Bangladesh that supports extensive agriculture, settlements, and ecosystems along the Mahananda River and its tributaries.
D. Mithi River basin
The Mithi River basin is an urban river catchment area in Mumbai, India, that drains parts of the city including major lakes and industrial zones before flowing into the Arabian Sea.
E. Tua River basin
The Tua River basin is a river drainage area in northeastern Portugal known for its scenic valleys, vineyards, and role as a tributary region of the Douro River.
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: Mahaweli River drainage basin
Target entity description: The Mahaweli River drainage basin is Sri Lanka’s largest river basin, encompassing the extensive network of tributaries and catchment areas that feed the country’s longest river, the Mahaweli.

A. Kelani River basin
The Kelani River basin is a major river catchment area in western Sri Lanka that supports dense populations, agriculture, and industry while providing a key source of water and hydropower.
B. Mahi River basin
The Mahi River basin is the drainage area of the Mahi River in western India, spanning parts of Madhya Pradesh, Rajasthan, and Gujarat and supporting agriculture, settlements, and ecosystems along its course.
C. Mahananda River basin
The Mahananda River basin is a river drainage region in eastern India and parts of Bangladesh that supports extensive agriculture, settlements, and ecosystems along the Mahananda River and its tributaries.
D. Mithi River basin
The Mithi River basin is an urban river catchment area in Mumbai, India, that drains parts of the city including major lakes and industrial zones before flowing into the Arabian Sea.
E. Tua River basin
The Tua River basin is a river drainage area in northeastern Portugal known for its scenic valleys, vineyards, and role as a tributary region of the Douro River.
F. None of above. chosen