Pusweli Oya

Coordinates: 6°54′N 80°04′E / 6.900°N 80.067°E

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Pusweli Oya

Location
Country	Sri Lanka
District	Kalutara
Physical characteristics

Source	Horana

Mouth	Kelani Ganga
• coordinates	6°54′N 80°04′E / 6.900°N 80.067°E / 6.900; 80.067

The Pusweli Oya is a major tributary of the Kelani Ganga river in Sri Lanka.

Starting from the hills in Puswelihena in Horana Division of Kalutara District, it flows northwards through a low-lying flat land (6–10 meters above sea level) converted into rice fields, which ultimately becomes the stream's flood plain during rainy seasons. On its way, the stream is joined by the Ma Dola starting from the hills of Madoluwawa and Kurugala, the Angomuwa Oya starting from Angomuwa and Miriyagal Kanda and the Arukwathu Oya starting from Udagama Kanda (1492 feet above sea level). The stream flows for 16 km down its valley before joining the Kelani Ganga near Hanwella. The lowest part of its valley is mostly covered by a large marshland known as Barawa marshland, where there are river loops and islets on its course. The flood plain of the stream is flooded many times annually mainly during the monsoon season from May to September and the inter-monsoon season of October and November.

References

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Inland waters of Sri Lanka

Rivers

≥100km	Deduru Oya Gal Oya Gin Ganga Kala Oya Kalu Ganga Kukule Ganga Kelani River Kehelgamu Oya Maskeliya Oya Pusweli Oya Kirindi Oya Kumbukkan Oya Maduru Oya Maha Oya Malwathu Oya Amban Ganga Kotmale Oya Nanu Oya Mahaweli Ganga Menik Ganga Mi Oya Walawe River Belihul Oya Yan Oya
<100km	Akkarayan Aru Kanakarayan Aru Kodalikkallu Aru Madu Ganga Mandekal Aru Mavil Aru Nay Aru (Mannar) Nay Aru (Mullaitivu) Netheli Aru Nilwala River Pali Aru Pallavarayankaddu Aru Parangi Aru Per Aru Piramenthal Aru Theravil Aru Valukkai Aru Verugal Aru

Lakes

Lagoons

Eastern coast	Batticaloa Lagoon Chalai Lagoon Chundikkulam Lagoon Kokkilai Lagoon Nai Aru Lagoon Nanthi Lagoon Ullackalie Lagoon Upaar Lagoon Vadamarachchi Lagoon Valaichchenai Lagoon
Western coast	Jaffna Lagoon Mundal Lagoon Negombo Lagoon Puttalam Lagoon Uppu Aru Lagoon
Southern coast	Koggala Lagoon Rekawa Lagoon Malala-Ambilikala Lagoons

Dams and
reservoirs

With hydroelectric
capabilities

Irrigation-only
(incl. ancient tanks)

Canals

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References