Split Rock upgrade

Split Rock Dam

• Located on the Manilla River, 33km upstream of Manilla
• Dam completed in 1987
• Storage capacity of 370,370 megalitres

About the upgrade

• Cost of $7.6 million
• Funded by The NSW State Government
• 2011 start date
• 2012 expected completion

Stage One

Upgrade to comply with ANCOLDand DSC safety standards. Construct new parapet wall on embankment. Storage capacity and water releases will not be altered by the upgrade.

Benefits

• Improved ability of dam to withstand extreme floods
• Improved environmental outcomes
• Increased sustainable regional development
• Stimulating local econmomy during construction phase

Milestones

• Late 2010 complete detailed design 
• Early 2011 award construction contract
• May 2011 commence construction
• Mid 2012 complete construction 

Updates

• Assessment of spillway adequacy was completed based on the revised generalised tropical storm method.
• Constultant engaged December 2007 to short list options identified in preliminary investigations to select a preferred option.  
• Construction contract awarded to John Holland Pty Ltd in April 2011
• Construction commencement ceremony held in June 2011

Fact sheet

Split Rock Dam Safety Upgrade (PDF 83kb)

Media releases

• 6 September 2011 Split Rock crest work underway
• 30 June 2011 Split Rock upgrade construction commences
• 13 April 2011 $31.6M Copeton and $5.6M Split Rock upgrade contracts awarded

Contact

Project Manager: Kock Ooi
Contact details: (02)  8245 2007