| Mouth location | Hunte |
|---|---|
| Mouth coordinates | 53.2043°N 8.4535°E |
| Country | Germany |
| State | Lower Saxony |
Ollen is a 17 km (11 mi) long river of Lower Saxony, Germany. It discharges into the Hunte through an old branch of the Hunte near Berne.
Ollen
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