| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Botucaraí River | Jacuí River | -30.0000000000 | -52.7666700000 | Map | |||||||
| Caí River |  | 5,026,999,808 | Jacuí River | 285,000 | -29.9313888889 | -51.2713888889 | Map | ||||
| Jacuí-Mirim River | Jacuí River | -28.8506275000 | -53.1231521000 | Map | |||||||
| Jacuizinho River | Jacuí River | 178,000 | -29.3498826000 | -53.2310725000 | Map | ||||||
| Jacutinga River (Das Antas River tributary) | Jacuí River | -26.3534192000 | -53.3906420000 | Map |