Information about SPLIT ROCK DAM

Split Rock Dam is located on the Manilla River, the turnoff lying on Fossikers Way, 31Km from Barraba and 15Km from Manilla with a 9Km drive into the Dam.

Its purpose is to provide irrigation water to the Namoi Valley, to safeguard the river environment and to supply additional water for towns along the Namoi.

Current Capacity Information

Access to Location Map

Regional Dam Capacities

All photographs on this page taken by R. J. Burling

Main Wall - Split Rock Dam
The picture at the top left shows the main wall, top right is a general view, bottom left shows the main spillway from below the dam whilst the remaining photograph is a view from the main wall looking downstream.

6 more photographs of Split Rock Dam

A further 6 photographs of Split Rock Dam

Split Rock Dam
Split Rock Dam
Split Rock Dam

Storage Capacity 397,000 megalitres
(75% of Sydney Harbour)
Maximum Water Depth 52 metres
Catchment Area 1,650 Sq Kilometres
Main Wall: Height 66 metres
Main wall: Volume of fill 1,071,000 cubic metres
Main wall: Length 469 metres
Spillway Discharge Capacity 720,000 megalitres/day
Outlet works maximum discharge capacity 5,790 megalitres/day

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