| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cacequi River | Río Santa María (Brasil) | -29.8850000000 | -54.9022000000 | Map | |||||||
| Ibicuí da Armada River | Río Santa María (Brasil) | -30.2656000000 | -54.8936000000 | Map |