13.2 The Wallis Lake Estuary Management Committee - Great Lakes ...

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Wallis Lake Estuary Management Plan W.8 Management Area C Management Objective Improve flow and water quality in Pipers Creek and Forster Keys Action No W.8.1 W.8.2 Action Continue investigations into opening up the northern end of Pipers Creek to increase flushing and hence water quality in the Pipers Creek and Forster Keys area Conduct a feasibility study/cost-benefit analysis of opening up the canal under King George Parade, Forster Keys, to allow an increased flow between Sailfish waterway and the waterway to the north of King George Indicative Priority Responsibilities Progress Cost $10,000 Long-term (E4) GLC, WLEMIC $5,000 Long-term (E4) GLC Comments Initial investigations into opening up the northern end of Pipers Creek were first made in 1993 with the Pipers Creek in Wallis Lake waterway improvement study (Australian Water and Coastal Studies Pty Ltd). Three alternative dredging options into Breckenridge Channel, Tonys Bay or Goldens Bay were presented in this report as shown in the diagram below. If investigations continue they must include additional public consultation and a comprehensive assessment of any adverse environmental impacts such as erosion and sediment transport that the activity of dredging may cause. This would include benthic sediment testing to assess any possible impacts from release of chemicals, heavy metals, or nutrients bound in sediments. Any major works involving dredging should consider any possible impacts of increased erosion, sediment transport and flooding. The implementation of the Wallis Lake stormwater management plan (W.1.1) in the Pipers Creek and Forster Keys catchments and community change through education strategies (C.1) will contribute significantly to improving water quality in the Pipers Creek and Forster Keys area. 34
Wallis Lake Estuary Management Plan GODWIN ISLAND Breckenridge Channel WALLIS ISLAND Tonys Bay Goldens Bay Pipers Creek BIG ISLAND Alternative dredging options to improve Pipers Creek flushing Channel to consider opening up under King George Parade [Plate 4.3: Major works options to improve flow and water quality in Forster Keys and Pipers Creek] 35
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13.2 The Wallis Lake Estuary Management Committee - Great Lakes ...

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