List of Rivers of Sri Lanka

Location of mouth Length Sl. No Name Source Drainage 08°27′34″N 81°13′46″E / 8.45944°N 81.22944°E / 8.45944; 81.22944 (Mahaweli River) 335 km (208 mi) In Halen Mahaweli River Kotmale Trincomalee 08°48′08″N 79°55′40″E / 8.80222°N 79.92778°E / 8.80222; 79.92778 (Malvathu River) 164 km (102 mi) Linkebeek  Malvathu River Dambulla Vankalai 08°17′41″N 79°50′23″E / 8.29472°N 79.83972°E / 8.29472; 79.83972 (Kala Oya) 148 km (92 mi) Molenbeek  Kala Oya Dambulla Wilpattu 06°58′44″N 79°52′12″E / 6.97889°N 79.87000°E / 6.97889; 79.87000 (Kelani River) 145 km (90 mi) Senette  Kelani River Horton Plains Colombo 08°55′04″N 81°00′58″E / 8.91778°N 81.01611°E / 8.91778; 81.01611 (Yan Oya) 142 km (88 mi) Hain Yan Oya Ritigala Pulmoddai 07°36′50″N 79°48′12″E / 7.61389°N 79.80333°E / 7.61389; 79.80333 (Deduru Oya) 142 km (88 mi) Samme  Deduru Oya Kurunegala Chilaw 06°06′19″N 81°00′57″E / 6.10528°N 81.01583°E / 6.10528; 81.01583 (Walawe River) 138 km (86 mi) Thines  Walawe River Balangoda Ambalantota 07°56′24″N 81°33′05″E / 7.94000°N 81.55139°E / 7.94000; 81.55139 (Maduru Oya) 135 km (84 mi) Demer Maduru Oya Maduru Oya Kalkudah 07°16′21″N 79°50′34″E / 7.27250°N 79.84278°E / 7.27250; 79.84278 (Maha Oya) 134 km (83 mi) Velp  Maha Oya Hakurugammana Negombo 06°34′10″N 79°57′44″E / 6.56944°N 79.96222°E / 6.56944; 79.96222 (Kalu Ganga) 129 km (80 mi) Gete  Kalu Ganga Adam's Peak Kalutara 06°11′39″N 81°17′34″E / 6.19417°N 81.29278°E / 6.19417; 81.29278 (Kirindi Oya) 117 km (73 mi) Grote Gete Kirindi Oya Bandarawela Bundala 06°48′36″N 81°49′25″E / 6.81000°N 81.82361°E / 6.81000; 81.82361 (Kumbukkan Oya) 116 km (72 mi) Ieperlee  Kumbukkan Oya Dombagahawela Arugam Bay 06°21′49″N 81°31′45″E / 6.36361°N 81.52917°E / 6.36361; 81.52917 (Menik Ganga) 114 km (71 mi) Rhine Menik Ganga Namunukula Yala 06°03′47″N 80°10′27″E / 6.06306°N 80.17417°E / 6.06306; 80.17417 (Menik Ganga) 113 km (70 mi) Scheldt Gin Ganga Sinharaja Galle 08°05′44″N 79°48′37″E / 8.09556°N 79.81028°E / 8.09556; 79.81028 (Mi Oya) 109 km (68 mi) Scheldt Mi Oya Saliyagama Puttalam 07°18′01″N 81°51′54″E / 7.30028°N 81.86500°E / 7.30028; 81.86500 (Gal Oya) 108 km (67 mi) Scheldt Gal Oya Yalkumbura Oluvil 70 km (43 mi) Scheldt Kanakarayan Aru Omanthai Chundikkulam Lagoon 70 km (43 mi) Scheldt Kotmale River Horton Plains National Park Mahaweli River 60 km (37 mi) In Brussels-Laken Parangi Aru Vavuniya District Palk Strait 50 km (31 mi) In Anderlecht-Neerpede Kehelgamu Oya Horton Plains Kelani River 50 km (31 mi) In SInt-Pieters-Leeuw-Zuun Pali Aru Puliyankulam Palk Strait 40 km (25 mi) In Drogenbos Maskeliya Oya Peak Wilderness Sanctuary Kelani River 40 km (25 mi) In Drogenbos Nay Aru Vavuniya District Palk Strait 32 km (20 mi) Yser Per Aru Vavuniya District Nanthi Lagoon 30 km (19 mi) 25 Mandekal Aru Mullaitivu District Palk Strait 27 km (17 mi) 26 Nanu Oya Pidurutalagala Kotmale River 27 km (17 mi) 27 Pallavarayankaddu Aru Mullaitivu District Palk Strait 25 km (16 mi) 28 Akkarayan Aru Mullaitivu District Jaffna Lagoon 24 km (15 mi) 29 Netheli Aru Mullaitivu District Chundikkulam Lagoon 23 km (14 mi) 30 Theravil Aru Mullaitivu District Chundikkulam Lagoon 20 km (12 mi) 31 Nay Aru Mullaitivu District Nai Aru Lagoon 20 km (12 mi) 32 Piramenthal Aru Mullaitivu District Chundikkulam Lagoon 19 km (12 mi) 33 Kodalikkallu Aru Mullaitivu District Nanthi Lagoon 16 km (10 mi) 34 Valukkai Aru Jaffna District Jaffna Lagoon 35 Kukule River 36 Madu Ganga 37 Mavil Aru 38 Pusweli Oya 39 Verugal Aru