Orange City Council’s controversial Macquarie River Pipeline Project has been given what Mayor John Davis calls an “encouraging” boost by an expert report which says the city would have had plenty of water if the pipeline had been operating during the long, harsh drought.
The report, the findings of a long-term modelling conducted by the environmental and civil engineering consultants Geolyse, asserts that the city’s dams would have remained at 50 percent full and emergency water restrictions wouldn’t have been needed.
Moreover, it says that at the height of the drought in 2010, when the dam levels fell to 23 percent, water from the pipeline would have maintained a level of more than 60 percent.
The Geolyse report was produced for a hydrology and water security assessment as part of the state government-required environmental assessment of the pipeline project.
Not surprisingly, the city council has welcomed the findings on a number of fronts: it goes a long way toward supporting and vindicating the council’s decision to stick to its guns on the pipeline scheme; it fires a potentially muffling shot across the bows of environmental and community groups bitterly opposed to the pipeline; and it could well remove the pipeline project as a probable major, divisive issue in the September council elections.
According to John Davis, the Geolyse report is the “result of modelling across more than 100 years of information [on Macquarie River capacity and flows] which demonstrates the project is viable.
“While some people believe there had been little or no flows in the Macquarie River for much of the last decade,” he says, “the actual data tells us as very different story.
“MINIMAL IMPACT” ON RIVER
“What the data reveals is that even when the city was in drought the Macquarie Pipeline would have delivered water security to the city with minimal impact on the river.”
The modelling estimates that the pipeline’s annual average extraction of water from the river between 2000 and 2010 would have been 1.5 percent of its flows.
On a long-term basis, the pipeline’s planned average extraction of 1,665 megalitres, or 0.54 percent of flows, would boost the city’s secure yield – water in the dams – “by 2,800 megalitres, almost double that first estimated.”
The project has yet to be assessed by various departments of the state government, which is going to mean more time and work before a final approval is granted, but there was no mistaking the heartening effect this latest report is having on Mayor Davis when Orange News Now interviewed him in this ONN Video report.






