| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Kukule Ganga | |||||||||||
| Akkarayan Aru | 192,000,000 | Jaffna lagoon | 25,000 | 9.4333333333 | 80.3000000000 | Map | |||||
| Kanakarayan Aru | 896,000,000 | Chundikkulam lagoon | 70,000 | ||||||||
| Kehelgamu Oya |  | Kelani River | 50,000 | 6.9827777778 | 80.4500000000 | Map | |||||
| Kelani River |  | 2,292,000,000 | Laccadive Sea | 145,000 | 6.9786111111 | 79.8694444444 | Map |