Town Planning Report - Material Change of Use Outdoor Sport and Recreation - Temporary relocation ~ Lake Macdonald Dr Lake Mac

Town Planning Report
Material Change of Use – Outdoor Sport and Recreation (Temporary Use)



8.2.6 Flood Hazard Overlay Code
Table 8.2.6.3 - Criteria for assessable development

 Performance outcomes                                                                                          Acceptable outcomes                                                                                                               Comments

 Floodplain protection, immunity and safety - for development areas

PO1                                                                                                           AO1
                                                                                                                                                                                                                                                  Performance Response
Development provides that for all flood events up to and including the DFE :
                                                                                                              The finished flood level is not less than the minimum design levels specified in Table 8.2.6.4
(a) the safety of people on the site is protected; and                                                                                                                                                                                            The proposed development ensures that for all flood events up to and including the
the risk of damage to property on the site is avoided or minimised as far as practicable.                                                                                                                                                         Defined Flood Event (DFE), the safety of people and property on the site is protected.
                                                                                                                                                                                                                                                  •      The development comprises a temporary, non-habitable 40-foot shipping container,
                                                                                                                                                                                                                                                         with no regular occupation and no reliance on the site during flood events, thereby
                                                                                                                                                                                                                                                         protecting the safety of people.
                                                                                                                                                                                                                                                  •      Seqwater’s active management of dam levels, including a significantly reduced Full
                                                                                                                                                                                                                                                         Supply Level (FSL) for the duration of the dam improvement works, substantially
                                                                                                                                                                                                                                                         lowers flood exposure.
                                                                                                                                                                                                                                                  •      The container will be securely anchored to prevent movement in the unlikely event
                                                                                                                                                                                                                                                         of a major flood and will be watertight, with no chemicals or hazardous materials
                                                                                                                                                                                                                                                         stored, minimising the risk of property damage or environmental harm.
                                                                                                                                                                                                                                                  Given the temporary nature of the development, the limited footprint, and the proposed
                                                                                                                                                                                                                                                  mitigation measures, residual flood risk is negligible. The proposal therefore avoids or
                                                                                                                                                                                                                                                  minimises flood impacts as far as practicable and achieves the intent of PO1.
                                                                                                                                                                                                                                                  It is acknowledged that, notwithstanding the temporary nature of the development,
                                                                                                                                                                                                                                                  building approval and certification will be obtained for the placement and anchoring of
                                                                                                                                                                                                                                                  the structure.

 PO2                                                                                                           AO2                                                                                                                                Not Applicable
 All lots have sufficient area that is above the DFE flood level or where modelling is not                     The minimum area above flood level (flood free area) for each lot, is in accordance with
 available, the highest recorded flood level, to safely and adequately accommodate the                         Table 8.2.6.5.                                                                                                                     The proposed development does not involve a Reconfiguring a Lot and does not create
 intended use.                                                                                                                                                                                                                                    any new lots.

 PO3                                                                                                           AO3                                                                                                                                Not Applicable
 For reconfiguring a lot or operational works, development is undertaken in a manner that                      Development areas are not filled to reduce flood risk.
 ensures:                                                                                                                                                                                                                                         No filling is proposed as part of the development. The structure will be placed at
 (a) natural hydrological systems are protected from erosion, scour or flood damage on                                                                                                                                                            existing ground levels within an already cleared and disturbed area.
       the premises or other premises;
 (b) natural landforms and drainage lines are maintained to protect the hydraulic
       performance of waterways and flood plain; and
 (c) development integrates with the natural landform rather than modifying the
       landform to suit the development as far as practicable.
PO4                                                                                                           AO4.1
                                                                                                                                                                                                                                                  Performance Response
                                                                                                              Development provides an effective evacuation route that remains passable, with sufficient
For reconfiguring a lot, development does not compromise the safety of people resulting
                                                                                                              flood warning time, to enable people to progressively evacuate to safe areas above the PMF                                          The proposed development ensures that people are not exposed to flood risk during
from the flood risk associated with events exceeding the DFE.                                                 in the face of advancing flood or waters for events that exceed the DFE.                                                            events exceeding the DFE, having regard to its operational characteristics and
                                                                                                              OR                                                                                                                                  management controls.
                                                                                                              AO4.2
                                                                                                              Development provides for an area of sufficient size and dimensions on site above the PMF                                            Rowing and associated activities will not occur during flood events, and this restriction
                                                                                                              that allows for safe congregation and refuge.                                                                                       will be clearly incorporated into the Operation Management Plan. The development


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