Lower Myall River Dredging to Bring Benefits

A major new project by Great Lakes Council is expected to significantly improve the ecology of the Lower Myall River.

Having received $2.7 million in Australian government and State funding, Council is about to start work on a dredging and restoration project designed to achieve a ‘triple-whammy’ of environmental improvements.

Council’s General Manager Glenn Handford said: “By dredging the Eastern Channel of the Myall River and relocating the sand to where it is needed most, the project will improve the water clarity of the river, protect the valuable wildlife habitat of Corrie Island, and renourish the erosion hotspot of Jimmys Beach. This project gives tremendous bang for the buck.

Eastern Channel Dredging

The Eastern Channel of the Myall River will be dredged to relocate it some 300 meters east of its current location. This location will be closer to where the Channel was in 2001.

Dredging is scheduled to begin this month, and is due to continue until September this year.

Council’s Manager of Natural Systems, Mr Gerard Tuckerman, said: “Council’s consultant, BMT WBM, has indicated that this would be a preferred position for the Channel in order to restore oceanic tidal flows to the Lower Myall River.”  

Increased tidal flows caused by the dredging are expected to improve water clarity in the Lower Myall River, which is important to the local community and for the local tourism industry.

Council will work with the Office of Environment to monitor the lower Myall River after dredging is completed to assess the impacts that the increased tidal flushing will have over time.

Corrie Island

The dredging also serves to preserve the status of Ramsar listed Corrie Island by reducing erosion of the island and keeping it separated from the mainland. This creates an important wildlife haven.

Additional work on the island includes the removal of exotic pines and bitou bush and the control of feral animals such as dogs, cats and foxes which are currently able to easily access the island. An island rehabilitation plan will also be developed.

Council Environmental Officer, Andrew Morris, said: “Feral dogs can prey on the threatened and migratory birds that roost on the Island, and we’ve found plenty of dog tracks. Because of the sand build up in the river, predators can get over to the island quite easily.”

Council is working with National Parks to control feral predators and also to remove weeds such as bitou bush, wild pine and asparagus that have become established on Corrie Island.

Other additional works on Corrie Island will include a trial mangrove rehabilitation project and enhanced monitoring of birds. The information will be used to measure the impact of the project in enhancing Corrie Island’s use by threatened and migratory birds.

Renourishment of Jimmys Beach

Sand removed from the dredging of the Eastern Channel will supply this year’s nourishment requirement for the Jimmys Beach erosion hotspot. The excess sand will be placed on Winda Woppa Spit.

As part of this project a sand transfer system involving a hopper, pumping system and pipeline will be built to transfer sand from the Spit to replenish Jimmys Beach.

Rock walls, groynes and other structures have all been examined, but establishing an ongoing sand nourishment program is the most financially sustainable option for maintaining Jimmys Beach and to provide a buffer to protect The Boulevarde behind it. It’s expected to reduce the total cost of protecting and maintaining the Beach from the current $600,000 per year to $200,000,” said Mr Tuckerman.

This option will provide a long term and more gradual supply of sand to Jimmys Beach, reducing the need to rely on trucking in sand during emergency storm events.

This is the first time such a scheme will be utilised for managing an erosion hotspot in NSW.

Construction of the sand transfer system is scheduled to begin in the first quarter of next year.

Share this article

Follow Dredging Today

Events>

<< Dec 2019 >>
MTWTFSS
25 26 27 28 29 30 1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31 1 2 3 4 5

3rd International Congress Hydraulic Engineering Structures and Dredging

Russia’s leading maritime industry Media Group PortNews (www.portnews.ru) holds a traditional annual Congress “Hydraulic Engineering Structures and Dredging” in Moscow. 

The two-day Congress includes the 7th International Forum of Dredging Companies and the 3rd Technical Conference “Modern Solutions for Hydraulic Engineering”.

Infrastructure development is among the real sources of Russia’s economy growth. Construction of port facilities and new hydraulic engineering structures on the country’s inland waterways constitute an essential part of all infrastructure projects. It is important to take into account the best international practices to implement these projects effectively.

The program of the Congress will be devoted to the latest technologies for dredging and hydraulic engineering works. Speakers and delegates will refer to real projects to discuss specifics features of dredging works, as well as dedicated fleet and equipment involved.

To learn more about event, please, contact the organizing committee: snitko@portnews.ru

read more >

Jobs>

Dredging jobs in Abu Dhabi at NMDC

National Marine Dredging Company “NMDC” aims to be the largest dredging player in the Arab’s Gulf region...

apply

Looking to fill a job opening?

By advertising your job here, on the homepage of DredgingToday.com, you'll reach countless professionals in the sector. For more information, click below....

apply

Looking to fill a job opening?

By advertising your job here, on the homepage of DredgingToday.com, you'll reach countless professionals in the sector. For more information, click below...

apply