| Esk River | |
| Source1 Location: | Dampier Range |
| Mouth Location: | Waimakariri River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 36km (22miles) |
| Pushpin Map: | New Zealand |
| Pushpin Map Caption: | Location of the mouth within New Zealand |
Canterbury's Esk River is a tributary of the Waimakariri River. It rises in the Dampier Range near Esk Head, and flows southwest on the western side of the Puketeraki Range to reach the upper Waimakariri some 20km (10miles) north of Springfield.[1] [2]
Brown and rainbow trout are available in the river, but fishing is restricted.[3]
Its tributaries include the Pūkio Stream, which prior to the Pleistocene epoch acted as an outlet for the Cox River into the Esk.[4]