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Amendment C082 - Update to Land Subject to Inundation Overlay and introduction of Floodway Overlay

This amendment to the Mount Alexander Planning Scheme proposes to update the Land Subject to Inundation Overlay (LSIO) and introduce a Floodway Overlay (FO) to manage the risk of flooding in the townships areas of Castlemaine, Campbells Creek and Chewton.

About the amendment

The Castlemaine, Campbells Creek and Chewton Flood Management Plan is a joint project between the North Central Catchment Management Authority (North Central CMA) and Mount Alexander Shire Council (Council).
The plan modelled the impact of flooding from Barkers Creek, Forest Creek and Campbells Creek in township areas of Castlemaine, Campbells Creek and Chewton which have a long history of flooding.
A key recommendation of the plan is an amendment to the Mount Alexander Planning Scheme to incorporate the new flood mapping and overlays from the comprehensive flood study.
Information relating to flood prone areas has been limited in the past. Land use planning is recognised as being the best means of avoiding future flooding problems.
The project is now at the stage of including the new flood information in the Mount Alexander Planning Scheme via Amendment C082.

What does the amendment propose?

Two new overlays are proposed:
Floodway Overlay (FO) Schedule 1
• Identifies waterways, major floodpaths, drainage depressions and high hazard areas which have the greatest risk and frequency of being affected by flooding.
• Ensures that any development maintains the free passage and temporary storage of floodwater and minimises flood damage.
• Permit required for buildings and works and subdivision.
• Exemptions apply for minor buildings and works for example upper storey extensions if there is no increase to the ground floor footprint, extensions less than 20m2, a replacement dwelling, non-habitable buildings with floor areas of less than 10m2, agricultural buildings with permanent openings, sheds and rainwater tanks.

Land Subject to Inundation Overlay (LSIO) Schedule 1
• Identifies land in a flood storage or flood fringe area.
• Ensures development maintains the free passage and temporary storage of floodwaters, minimises flood damage, and will not cause any significant rise in flood level or flow velocity.
• Permit required for buildings and works and subdivision.
• Exemptions apply for minor buildings and works for example upper storey extensions if there is no increase to the ground floor footprint, extensions less than 40m2, replacement dwellings and fences, agricultural buildings with permanent openings, sheds and rainwater tanks.

Minor change to existing LSIO

The LSIO already exists on some land in the Shire, both within and outside the study area identified in the flood management plan.

LSIO Schedule 1 will be applied to land in the flood management plan area only.

Existing LSIO areas outside the flood management plan area will be renumbered to LSIO Schedule 2. Overlay maps of these areas will remain unchanged.

Current Status

The amendment was referred to an independent planning panel to consider the amendment and submissions made in response to it.

The independent panel report is now available to the public. A copy of the report can be downloaded here:

Panel Report: Mount Alexander Planning Scheme Amendment C082 (PDF, 2MB)

The Panel Report addresses the key issues raised in submissions.
Overall the Panel supports the amendment, with one recommendation to amend it by removing the proposed Land Subject to Inundation Overlay land in the vicinity of Brigade Avenue, Campbells Creek.

Next steps

Council will consider the Panel’s recommendations at a future meeting. If Council adopts the recommendations of the Panel, it will send the Amendment to the Minister for Planning requesting its approval.

More information

Further information and documentation about the amendment is available for public inspection, free of charge, during office hours at the following places:

• Mount Alexander Shire Council, Civic Centre, 27 Lyttleton Street, Castlemaine
Planning Schemes Online

For more details on the Planning Scheme and Amendment C082, please contact the Strategic Planning team on (03) 5471 1700 or email info@mountalexander.vic.gov.au.

For further technical information or property specific queries including flood levels, flooding impacts and required floor levels for new buildings or extensions to existing buildings, please contact North Central Catchment Management Authority on (03) 5440 1896 or email floodplain@nccma.vic.gov.au.

Reference documents

Castlemaine, Campbells Creek and Chewton Flood Management Plan (PDF, 900KB)
Amendment C082 Frequently Asked Questions (PDF, 250KB)

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