Mordialloc Creek
Dredging Program Outline
2011 - 2012
Contents
1.
2.
3.
4.
5.
6.
7.
Background
Program Scope
Stakeholders
Program Pre-conditions
Funding Arrangements
Related works program
Sustainable Management Plan
1. Background
• Natural tidal creek
• Heavily modified by
channels, revetments,
training walls.
• Was the natural outlet
of the Carrum Swamp
• Historic boat harbour
• Upstream now more
estuarine condition
Dredging history
• Melbourne Water
performed dredging in
the past
• No significant
dredging in section A
since 1997
• Section B was last
done in 2000
• Some maintenance
dredging since 2000
Mordialloc Village
• Important Council focus
– Mordialloc Master Plan
• Structure plan for the area
– Historic fishing village and boat
harbour
– Commercial and recreational hub
Mordialloc Creek
• Responsible Agencies
– Melbourne Water
– City of Kingston
– Parks Victoria
– Dept Sustainability & Environment
– EPA Victoria
• Affected Agencies
– Victrack
– Vic Roads
Mordialloc Creek (cont)
• Melbourne Water Responsibilities
– Manage and monitor the health of rivers,
creeks and wetlands
– Manage the regional drainage system
– Provide a safe level of flood protection
– Regulate works on rivers and creeks
– Make sure urban development is safe and
meets flood and environment standards.
Mordialloc Creek (cont)
• Kingston CC Responsibilities
– Be the Committee of Management
for the nominated Crown Land
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•
•
•
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Manage the reserve
Develop the reserve
Enter into contracts
Enter into tenure arrangements
Enforce regulations
2. Program Scope
• PHASE 1
– Lambert Island Section
• Tasks
• Tender & Contract
• Consents & Approvals
• PHASE 2
– Sections A, B & C
• Tasks
• Tender & Contract
Dredging Tasks
• Method
• Barge mounted bucket excavator
• Partially dewatered in a hopper barge
• Cationic polymer added to trap ASS
and pollutants
• Floating silt curtain to trap plume
• Timing to avoid fish breeding times
• Class C contaminated silt disposal to
landfill
Dredging Sections
Channel Profiles
3. Stakeholders
• Community
– Residents
– Mordialloc Creek Community
– Commercial Operators
– Village Traders’ Group
• Agencies
– DSE
– MW
– PV
4. Program Preconditions
• Stage 1
– Consent from DSE
– Consent from EPA Victoria
• Stage 2
– Funding from State Government
– Sustainable Management Plan
– MOU joint management with PV
and MW
5. Funding Arrangements
• Stage 1
– City of Kingston
• Stage 2
– State Government
– City of Kingston (related or ancillary
works)
6. Related Works
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•
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Mooring pole replacements
Landings & Jetties
Revetments, walls
Slipways
Other
– Wave barriers (PV)
– Training walls (PV)
– Structure / Master plan items
7. Sustainable Master Plan
• Precondition for 10 year consent
• Will look at sustainable dredging
practice
• Will look at sustainable funding
arrangements
• KCC + MW + PV joint plan
• May set rules on boat size /
operation