|Main source||Southern Alps
1,343 m (4,406 ft)
|River mouth||Doubtful River
695 m (2,280 ft)
|Length||6 km (3.7 mi)|
The Doubtless River is a river of northern Canterbury, New Zealand. A tributary of the Doubtful River, it rises south of Mount Boscawen and flows southward through the Lake Sumner Forest Park to join that river 2 kilometres (1.2 mi) east of Phantom Flat.
- Land Information New Zealand - Search for Place Names
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