| Blackwater River | |
| Pushpin Map: | New Zealand |
| Pushpin Map Caption: | Mouth |
| Subdivision Type1: | Country |
| Length: | 19km (12miles) |
The Blackwater River is located in the Buller District of New Zealand. It flows north-northwest for 19km (12miles) from the northern slopes of Mount Copernicus in the Paparoa Range, reaching the Buller River 16km (10miles) west of Inangahua in the lower Buller Gorge.[1]