| Split Rock Reservoir | |
|---|---|
| The Split Rock Dam wall. | |
| Location | New South Wales |
| Lake type | reservoir |
| Primary inflows | Manilla River |
| Primary outflows | Manilla River |
| Catchment area | 1,650 km² |
| Basin countries | Australia |
| Max. depth | 52 m |
| Water volume | 397,000 megalitres |
Split Rock Dam and Split Rock Reservoir lie between the New South Wales towns of Barraba to the north and Manilla to the south. It is reached by a turnoff from Fossickers Way.
Split Rock Dam is on the Manilla River, a tributary of the Namoi River, 24 kilometres from Manilla. It was constructed in 1987 for irrigation. Its purpose is to provide irrigation water to the Namoi Valley, and to protect the river environment as well as supplying additional water for towns along the Namoi River. Its storage capacity is 397,000 megalitres. The maximum water depth is 52 metres.[1] Its catchment area is 1,650 square kilometres, mostly from the Upper Manilla and Ironbark Creeks plus small creeks and gullies, too, including Crow Mountain and Eumur Creeks.[2] It is named after a fissure in a large rock near the dam site.
It has recreational opportunities including camping areas and facilities for launching ski boats and sailing boats. There are toilet, barbecue, picnic, and camping facilities as well as a boat ramp. The only restriction is a no boat area near the dam wall. It contains fish species such as Murray cod, golden perch, silver perch, eel tailed catfish and carp.
On the reservoir's northern shore is Glen Riddle Recreation Reserve, a 14 hectare reserve with toilets, picnic and camping facilities.