| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ilster |  | Munster | Örtze | 5,000 | 53.0247000000 | 10.0851000000 | Map | ||||
| Kleine Örtze |  | Örtze | 12,800 | 52.9141666700 | 10.1233333300 | Map | |||||
| Wietze (Örtze) |  | 193,000,000 | Örtze | 29,000 | 52.9911111111 | 9.9591666667 | Map | ||||
| Brunau (Örtze) |  | Örtze | 10,300 | 52.8491666700 | 10.1016666700 | Map | |||||
| Weesener Bach |  | Örtze | 13,700 | 52.8170472222 | 10.2128388889 | Map |