Don't panic - wall won't come down
Rocky Creek Dam recreational facilities should re-open by Christmas and the dam wall should now withstand extreme rainfall events, according to Rous Water’s technical services director Wayne Franklin.
The dam has been closed to the public for about six months while engineering works have been carried out.
“The issue with the wall was that the top 1.5metres of the dam embankment area which is normally above the water level was never built to be water tight. But the water level after a major rainfall comes right to the top of the wall. That could cause the upper level to wash away and then keep washing down until there is no dam left,” Mr Franklin said. “So not only would we lose the key part of our regional water supply, it would endanger people downstream from the dam.”
The good news is the problem has been identified and $1.8million has been allocated to fix it.
“What we are doing is removing the top 1.5metres of the wall then constructing a concrete cut of wall from the clay core of the dam up to the normal roadway level. That’s the waterproofing part. Then we are reforming the top with compacted earth, reinforcing that with large rock facing then putting in a new pavement and wave wall and on the other side a new curb.
“We’re doing our best to make it look historically like it always did,” Mr Franklin said.
For those who have been missing out on the use of the park, barbecue and other recreation facilities at the dam, Mr Franklin said everything was looking good to have work complete and open again by Christmas, but contractors had until February 16 to have everything finalised.