From 17–19 November, an important restoration milestone was reached along the Kolan River, with the installation of biodegradable bamboo “brush plugs” throughout the intertidal zone. This bioengineering intervention is part of the broader Mangrove and Blue Carbon initiative, designed to enhance coastal resilience and support natural ecosystem recovery.
A total of 1,563 bamboo units were securely anchored across five plots at two priority sites, covering approximately 340 m² of shoreline. These brush plugs are engineered to slow water movement across the intertidal zone, helping to trap and retain sediment that would otherwise flow toward the southern Great Barrier Reef.
These interventions help to reduce sediment and nutrient inputs flowing into the Reef lagoon, directly contributing to Reef 2050 Water Quality Improvement Plan targets. By stabilising sediment and modifying local hydrodynamics, the structures create favourable conditions for natural mangrove recruitment, allowing the forest to gradually expand along the riverbank.
As mangrove cover increases, it is expected to deliver multiple environmental benefits, including stronger lower-bank integrity, improved shoreline stability, and enhanced resilience to future flooding events. Over time, these outcomes contribute to healthier riverine ecosystems and increased blue carbon storage.
The work was delivered by Seagrass Technologies, a local environmental management organisation selected for its proven expertise and successful track record in coastal and estuarine rehabilitation, alongside Taribelang Aboriginal Corporation (TAC) rangers and sub-contractors Ecosure.
This project marks a significant step forward in restoring nature-based defences along the Kolan River and supporting long-term environmental resilience in the region.