Our civil operations crew have completed the reconstruction of a naturalised drainage line that carries overflows from the Yarrabilba stormwater management wetlands. The 330 metre long drain, consolidates high volume stormwater flows through the use of extensive rock armouring, gabions and rock mattresses together with native plantings used to dissipate the flows.
Bushcare construction techniques included the cut and fill (reshaping) of affected areas. A raised cellular confinement system was backfilled with soil and layered with coir tec mat (high flow rated) – and then planted out.
Turf was installed/ pinned on top of the banks, and 5,800 native tubestock installed on the tapered banks and wetland grasses used in the in-stream flow zone.
A plunge pool was constructed by installing a series of reno mattresses at the head flow to dissipate the high volume flows and enable a gentle transition to the naturalised creek downstream.