| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Açu River (Paraná) | Piquiri River | -24.1274036000 | -53.9884505000 | Map | |||||||
| Bandeira River (Piquiri River tributary) | Piquiri River | -25.0449684000 | -52.5353222000 | Map | |||||||
| Barbaquá River | Piquiri River | -24.8000000000 | -52.8666666667 | Map | |||||||
| Barreiro River (Paraná) | Piquiri River | -24.4000000000 | -53.1666666667 | Map | |||||||
| Cantú River | Piquiri River | -24.7583000000 | -52.8594000000 | Map |