| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ialomicioara (left tributary) | 45.2259000000 | 25.4284000000 | Map | ||||||||
| Iapa (Someș) | |||||||||||
| Iarych | Wol (Wytschegda) | 49,000 | |||||||||
| Ibenbach |  | 18,930,000 | Wagensteigbach | 11,020 | 47.9727000000 | 7.9896400000 | Map | ||||
| Iberd | 182,000,000 | Ranowa | 23,000 | 53.8445730000 | 40.1051670000 | Map |