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| Oude Maasje | |
|---|---|
 Keizersveer bridge across the Bergse Maas near Geertruidenberg; to the right, the mouth of the Oude Maasje | |
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| Location | |
| Country | The Netherlands |
| Region | North Brabant |
| Physical characteristics | |
| Source | |
| • location | Maas, near Heusden |
| Mouth | |
• location | Bergse Maas, near Geertruidenberg |
| Basin features | |
| River system | Maas |
The Oude Maasje ("Little Old Meuse") is a former distributary of the river Maas (or Meuse), which runs parallel to the current canalised Bergse Maas.