RIVER & SEA WALLS
Gabions - Ideal Flood Protection & Coastal Management
Gabions are an ideal choice for river erosion control as well as coastal management and as sea levels are rising, there is an increased risk to coastal communities. The PoliMac® coated wire mesh used to make Gabions and Renos is one of the few construction materials that can withstand highly corrosive marine environments. Gabions and Renos have an advantage over traditional construction materials such as concrete because they are extremely strong and will not be washed away. They are also permeable and are flexible enough to conform to ground movement, as well as helping to dissipate and slow the water flow.
Prospect Contractors have successfully installed Gabion seawalls in marine environments such as at Encounter Lakes, Victor Harbor, the Patawalonga River, Glenelg and at Bar Beach, NSW. We have also successfully installed Gabions in several locations along the banks of the Murray River.
Frank Hilton Reserve
Location: Maslins Beach,
The creek that flows out to sea at Maslins Beach carries most
of the surrounding suburb’s stormwater. Prospect Contractors added a stepped weir and Reno mattresses to help slow the flow of water while reducing further erosion.
Encounter Lakes Marine Wall
Location: Encounter Bay,
Prospect Contractors installed a Gabion retaining wall, in a marine environment at the Franklin Island Development. PVC sleeves were used to fix a fence into the Gabion wall.
Bar Beach Sea Wall
Location: Bar Beach,
New South Wales
Prospect Contractors installed Gabion retaining walls along a section of eroded cliff at Bar Beach in Newcastle. The retaining wall stabilised the cliff and provided a strong footing for new pathways and stairways to the beach to be added.
Greenbanks River Stabilisation
Location: Murray Bridge,
An owner of a private property on the river needed a solution to their riverbank erosion problem. Prospect Contractors built Gabion walls along the riverbank, protecting against future erosion while also providing a stronger foundation for the new boat ramp.
Prospect Contractors installed Reno Mattresses as a revetment structure, 1 metre under the water to stabilise the embankment at the Patawalonga in Glenelg. Divers were required to clip and fill the mattress sections that were under water and careful planning was needed to work around the tide times.
Morgan River Stabilisation
Prospect Contractors installed 120m3 of Gabions along the riverbank at a private property, to reinstate the bank after it had collapsed as a result of the river flooding.