Misplaced Pages

Mahaweli River
Mahaweli River flowing through Gampola
Mahaweli river on the Srilankan Map
Location
Country	Sri Lanka
Physical characteristics
Source
• location	Horton Plains National Park
Mouth	Bay of Bengal
• location	Trincomalee Bay
• coordinates	08°27′34″N 81°13′46″E / 8.45944°N 81.22944°E / 8.45944; 81.22944
Length	335 km (208 mi)
Basin size	10,448 km2
Basin features
Tributaries
• left	Amban Ganga
• right	Kotmale Oya

The Mahaweli River (Sinhala: මහවැලි ගඟ, literally "Great Sandy River"; Tamil: மகாவலி ஆறு ), is a 335 km (208 mi) long river, ranking as the longest river in Sri Lanka. It has a drainage basin of 10,448 km (4,034 sq mi), the largest in the country, which covers almost one-fifth of the total area of the island. The Mahaweli Ganga starts at Polwathura (in the Mahawila area), a remote village of Nuwara-Eliya District in bank Nawalapitiya of Kandy District by further joining of Hatton Oya and Kotmale Oya. The river reaches the Bay of Bengal on the southwestern side of Trincomalee Bay. The bay includes the first of a number of submarine canyons, making Trincomalee one of the finest natural deep-sea harbours in the world.

As part of Mahaweli Development programme, the river and its tributaries are dammed at several locations to allow irrigation in the dry zone, with almost 1,000 km (386 sq mi) of land irrigated. The production of hydroelectricity from six dams in the Mahaweli system supplies more than 40% of Sri Lanka's electricity needs. One of the many sources of the river is the Kotmale Oya.

There is a misconception in Sri Lanka that the Mahaweli starts at Sri Pada Mountain. The Mahaweli gets its source waters from Horton Plains in Kirigalpoththa and the Thotupola mountain range.

Tributaries

• Nanu Oya
• Puna Oya
• Pundalu Oya
• Kotmale Oya
• Hatton Oya
• Atabage Oya
• Nilamba Oya
• Nanu Oya (Peradeniya)
• Thalathu Oya
• Hulu Ganga
• Heen Ganga
• Beli Ul Oya
• Kirindi Oya
• Loggal Oya
• Uma Oya
• Badulu Oya
• Kalu Ganga (Tributary)
• Amban Ganga
• Gin Oya

Starting of Mahaweli

The Mahaweli River starts from Polwathura/Mahavila area with its water source starting from the Horton Plains National Park.

See also

• List of rivers in Sri Lanka
• Mahaweli Development programme

References

1. "Horton Plains National Park". International Water Management Institute. Archived from the original on August 5, 2010. Retrieved 23 November 2009.
2. Room, Adrian (2001-05-01). Placenames of the World. McFarland & Company. ISBN 0-7864-1814-1.
3. "Sri Lanka. Water Report 37, 2012". Aquastat. FAO. 2012. Retrieved 30 September 2019.
4. Stoddart, David (1996-12-26). Process and Form in Geomorphology. Routledge (UK). ISBN 0-415-10527-7.
5. Barry, D. (2001-06-07). Knowledge of the Land. Oxford University Press. ISBN 0-19-829601-0.
6. Mahaweli Ganga

External links

• Mahaweli River The Lifeline of Sri Lanka

• v
• t
• e

• Rivers of Sri Lanka
• Asia river stubs
• Sri Lanka geography stubs