Damage to the Tweed River and post-flood upper catchment

Extreme erosion alongside the banks of the Tweed River stays a trigger for concern as continued rain continues to have an effect on water high quality.

The municipality’s waterways workforce is attempting to precisely report the complete scale of the harm, whereas engaged on the rehabilitation of creeks and riverbanks broken by the unprecedented currents of the February flood.

Tom Alletson, Program Chief for the Council’s Waterways, stated vital work is required to revive and shield the riverbank alongside the waterway.

“Erosion in lots of locations alongside the Tweed River is important and would require loads of work, however essentially the most excessive harm is within the part of the river between Byangum and Uki,” Alletson stated. Stated.

“The erosion on this part is past something we now have skilled earlier than and in some components of the riverbank timber and soil have been destroyed, retreating as much as 30 metres.

“We’ll conduct an evaluation at every erosion web site to establish the place interventions will likely be handiest.

“The timeline for restoration will likely be lengthy. All components of the riverbank want consideration, however some areas must be particularly focused to stop additional erosion, inflicting extra issues downstream.”

Work is underway to stabilize the riverbank erosion downstream of Murwillumbah on Tumbulgum Street. Erosion right here has steadily worsened for the reason that 2017 flood, with extra harm performed throughout the newest flood.

Work will embrace putting in rocks to guard coasts from flood currents and ripples, and merging massive logs to enhance fish habitat. The riverbank will likely be fenced off and re-vegetated with native timber to maintain cattle out. The work will take roughly 12 weeks with funding from the Commonwealth Authorities’s Fisheries Habitat Restoration Programme.

River Well being Grants could also be out there to enhance river well being, erosion remediation and revegetation, whereas the Council can present recommendation and help to landowners looking for help with erosion in some circumstances.

Mr Alletson stated water high quality within the downstream sections of rivers and coastal creeks is beginning to return to regular, however present moist climate will have an effect on this course of.

“It is very important use frequent sense when accessing water as a result of water samples taken at excessive tide could conform to swimming guidelines. Nevertheless, the identical space sampled at low tide or additional upstream past the attain of the tidal present can yield poor outcomes,” he stated.

Because the floods, rehabilitation has centered on eradicating trash and particles, in addition to salvaging and securing broken boat services. Tweed River has benefited from work performed by the NSW Environmental Safety Company (EPA), which helps take away litter and hazards.

Crews eliminated tons of particles from Bray Park to Fingal Head, together with a submerged 10-metre boat and two ‘Return and Win’ reverse merchandising machines from South Murwillumbah.

Mr Alletson stated the Council gratefully acknowledged the help offered by the NSW Authorities.

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