After the estuary mouth (The "Entrance") was widened, properties upstream were subjected to much stronger tidal flows and storm related erosion. Over the last 60 years or so, individual landowners have gradually used dead tea tree logs and brushes to create informal groynes adjacent to their properties. The dead vegetation allows significant water flow through while trapping sand and sediment, and also allows some spillover of sediment which somewhat helps mitigate the classic lopsided sand accumulation associated with groynes. The newest groynes were put in place in 2019, and have already trapped over 40cm of sand height. As a result, some grasses and other native beach vegetation have started naturally establishing on the permanently trapped sediment toward the landward ends of the groynes. Waves caused by storm events once reached the vegetation level, sometimes resulting in die off; the waves now break directly onto the sand banks and pose little risk of erosion. The positive effect is especially obvious compared to properties further downstream which are experiencing severe erosion without the groynes. As the groynes naturally decompose over time, they are occasionally topped up by landowners using any dead wood found on their properties.

Other

Method: "Soft" groynes made from tea trees, bracken and driftwood. The groynes are approximately 10m long, 40-60cm high and spaced between 10-15 metres apart.