Diyawanna Oya

A Cinnamon Air aircraft on Diyawanna Oya in Sri Lanka.

Diyawanna Oya (Parliament Lake; Sinhalese: දියවන්නා ඔය, Tamil: தியவன்ன ஓயா) is one of the lakes within Sri Jayawardenepura Kotte, Sri Lanka.

The new Sri Lankan Parliament Building was built on an island formed at the center of the lake using dredgings from the surrounding marshlands.

Inland waters of Sri Lanka

Dams and reservoirs

With hydroelectric capabilities	Bowatenna Broadlands Canyon Dam Castlereigh Deduru Oya Gal Oya Kotmale Kukule Ganga Laxapana Maskeliya Moragahakanda Nilambe Norton Polgolla Randenigala Rantembe Samanala Udawalawe Upper Kotmale Victoria

For irrigation only	Giant's Tank Inginimitiya Iranamadu Kalu Ganga Kandalama Kantale Lunugamwehera Maduru Oya Muthuiyankaddu Kulam Rajanganaya Rambakan Oya Ratkinda Ulhitiya Vavuni Kulam

Ancient tanks	Beira Lake Diyawanna Kala Wewa Kandy Lake Minneriya Sembuwatta Lake Tissa Wewa (Anuradhapura) Tissa Wewa (Tissamaharama)

Lagoons

East coast	Batticaloa Lagoon Chalai Lagoon Chundikkulam Lagoon Kokkilai Lagoon Kokkilai Lagoon Nai Aru Lagoon Nanthi Lagoon Ullackalie Lagoon Upaar Lagoon Vadamarachchi Lagoon Valaichchenai Lagoon

West coast	Jaffna Lagoon Mundal Lagoon Negombo Lagoon Puttalam Lagoon Uppu Aru Lagoon

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 Mahaweli River (Amban Ganga Kotmale Oya Nanu Oya) Malvathu River 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 Pali Aru Pallavarayankaddu Aru Parangi Aru Per Aru Piramenthal Aru Theravil Aru Valukkai Aru Verugal Aru

Related organizations

Mahaweli Authority
Ministry of Irrigation and Water Resources Management

Coordinates: 6°53′12″N 79°55′15″E / 6.88667°N 79.92083°E / 6.88667; 79.92083

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