| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nam Sam River | 148 | 7,580,000,256 | Ma River | 325,000 | 19.8812400000 | 105.7565200000 | Map | ||||
| Kong River |  | 5 | Mekong | 16.0275420000 | 107.0217030000 | Map | |||||
| Hueang River | Mekong | 17.8191460000 | 101.5527190000 | Map | |||||||
| Xe Kaman River | Kong River | ||||||||||
| Mekong |  | 15 | 794,999,980,032 | 5,216 | South China sea | 4,880 | 33.1527222222 | 94.0640277778 | Map |