Split Rock Dam

Infobox lake
lake_name = Split Rock Reservoir
image_lake =
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location = New South Wales
coords = coord|30|32|S|150|42|E|type:waterbody_region:AU|display=inline,title
type = reservoir
inflow = Manilla River
outflow = Manilla River
catchment = 1650 km²
basin_countries = Australia
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max-depth = 52 m
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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, 15 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. It's storage capacity is 397,000 megalitres. The maximum water depth is 52 metres. It's catchment area is 1650 square kilometres. It is named after a fissure in a large rock near the dam site.

It has many 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 reservoirs northern shore is Glen Riddle Recreation Reserve, a 14 hectare reserve with toilets, picnic and camping facilities.