| Esk River | |
| Name Other: | Fresh Water River |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | New South Wales |
| Subdivision Type3: | Region |
| Subdivision Name3: | NSW North Coast (IBRA), Northern Rivers |
| Subdivision Type4: | District |
| Subdivision Name4: | Richmond Valley |
| Subdivision Type5: | Town |
| Subdivision Name5: | Iluka |
| Length: | 25.2km (15.7miles) |
| Source1: | Richmond Range |
| Source1 Location: | southeast of Tabbimoble |
| Source1 Elevation: | 23.5m (77.1feet) |
| Mouth: | confluence with the northern arm of the Clarence River |
| Mouth Location: | Iluka |
| Mouth Elevation: | 0m (00feet) |
| River System: | Clarence River catchment |
| Custom Label: | National park |
| Custom Data: | Bundjalung National Park |
| Extra: | [1] |
Esk River, a perennial stream that is part of the Clarence River catchment, is located in the Northern Rivers region of New South Wales, Australia.
Esk River rises below Richmond Range, southeast of Tabbimoble, and flows generally to south through Bundjalung National Park towards its confluence with the northern arm of the Clarence River, northwest of the coastal fishing village of Iluka.[2] The river descends over its course.[1]
The river is an increasingly popular kayak fishing location that is home to a variety of fish species such as yellowfin bream, dusky flathead and sand whiting in its lower brackish areas and has a good population of Australian bass[3] in its fresh water reaches. The Esk River is considered the largest untouched coastal river system on the New South Wales North Coast.[4]