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Proposed North Harbour development
Proposed declaration of a works area in the Moreton Bay Marine Park and changes to the Deception Bay declared Fish Habitat Area to allow for the North Harbour development.
North Harbour is a proposed marina development that forms part of the Northeast Business Park / North Harbour integrated residential, business and industry development near Caboolture. Details of the proposed North Harbour development are available at North East Business Park.
The North Harbour development as proposed will require amendments to the following regulatory instruments: the zoning plan for Moreton Bay Marine Park and the Fisheries Regulation 2008 as it pertains to the Deception Bay declared Fish Habitat Area (FHA):
- declaration of a works area, as a type of Designated Area, in the marine park
- revocation of parts of the declared FHA
- management level downgrade of part of the declared FHA.
A 6.4 kilometre navigation channel is proposed from the entrance of the Caboolture River upstream to the proposed marina. The proposed alignment of the navigation channel, finalised in consultation with Maritime Safety Queensland, will also provide improved marine safety to all users. The channel will be 40m wide and require capital dredging of 236,000m3 of substrate from the River to achieve a depth of -3.25m Australian Height Datum. Dredge spoil will be disposed of on land at the North Harbour development site.
The bank of the Caboolture River is proposed to be broken to create an entrance to the proposed marina. The entrance will be approximately 250m wide and require removal of substrate from an area of 0.57ha in the marine park and declared FHA.
Erosion control works are likely to be required at various locations on the banks of the Caboolture River as dredging of the proposed channel to its design depth is likely to increase tidal prism, range and velocity within the River and exacerbate existing bank erosion. A combination of mitigation measures for erosion control, including bank revegetation, battering and toe groyne rock walls may be required along various sections of river bank.
The proposed works area in the Moreton Bay Marine Park would cover the area of the navigation channel and marina entrance to allow for capital dredging (Figure 1 ). The proposed navigation channel traverses a general use zone and a habitat protection zone. The proposed marina entrance is in a general use zone.
The Marine Park (Moreton Bay) Zoning Plan 2008 provides for designation of a works area within general use and habitat protection zones of the marine park to allow for major works that are necessary for the public benefit, that are inconsistent with the objects of the zone in which they are proposed and are likely to have a significant impact on an area of the marine park.
It is proposed that the following parts of the Deception Bay declared Fish Habitat Area be revoked:
- The area of the proposed navigation channel to allow for capital dredging (Figure 1 ). The current navigation channel in the Caboolture River is excluded from the declared FHA (as all marked navigation channels are excluded from declared FHAs). Since the alignment of the proposed new navigation channel is partly within and partly outside the existing marked channel, revocation will result in an overall decrease in area of the declared FHA of 4.1ha.
- The area of the proposed marina entrance to allow breaking of the banks of the Caboolture River (Figure 1 ). This would reduce the area of the declared FHA by a further 0.57ha.
The Fisheries Regulation 2008 does not allow for approval of capital dredging works in declared FHAs. The only available option for dredging to proceed is for the footprint of the channel and marina entrance to be revoked from the declared FHA.
It is proposed to change the Caboolture River section of the Deception Bay declared FHA from a management A area to a management B area.
The Deception Bay declared FHA is almost entirely a management A area, which prohibits works for erosion protection structures. Downgrading the Caboolture River section of the declared FHA to a management B area would allow for future erosion control works that may be required as proposed channel dredging may worsen existing river bank erosion.
The submission period has closed.