The Malwathu Oya ( si, මල්වතු ඔය Malwathu Oya, ta, அருவி ஆறு Aruvi Aru), at long, is the second longest river in
Sri Lanka. The river originates in the North Central Province of Sri Lanka and enters the sea on the northwest coast, into the Gulf of
Mannar Mannar may refer to the following places:
India
* Mannar, Alappuzha, a town in Chengannur Taluk, Kerala
Sri Lanka
* Mannar District, one of 25 districts in Sri Lanka
** Mannar Island, an island within the district
**Mannar Bridge, a bridge connect ...
, near
Vankalai
Vankalai or Vangalai or Vangkaalai ( ta, வங்காலை vaṅkālai) is a predominantly fishing and farming village situated in Mannar District of the Northern Province of Sri Lanka. It lies along the Naanaattan Road with the sea on its ...
. It is a seasonal river that spans over 164 kilometers through paddy and forest lands, which are used by the inhabitants to cultivate for their survival.
[P.A.C.T. Perera, T.V. Sundarabarathy, T. Sivananthawerl, U. EdirisingheSeasonal variation of water quality parameters in different geomorphic channels of the upper Malwathu Oya in Anuradhapura, Sri LankaTrop. Agric. Res., 25 (2014), pp. 158-170]
The river basin covers an area of (with a length of , a maximum width of at an average height of above sea level). The average annual rainfall in the basin area is . The Ritigala mountain range, which comprises four main peaks (the highest of which is over high), in the upper reaches of the river, serves as the main catchment.
Tributaries
* Kanadara Oya
* Maminiya Oya
* Kadahatu Oya
* Kal Aru
* Narivili Aru
See also
*
List of rivers in Sri Lanka
The following table lists most rivers of Sri Lanka. Since Sri Lanka is a trilingual country, some rivers may have a Sinhala name (i.e. Kalu Ganga), while other have an English name (i.e. Kelani River). In the Sinhala language, Ganga (ගඟ) t ...
References
{{SriLanka-river-stub
Rivers of Sri Lanka
Bodies of water of Mannar District
Gulf of Mannar