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

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.
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