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The nature and location of the management zones for the Macquarie Valley Floodplain were determined using hydraulic, ecological and cultural criteria, as well as criteria to ensure the plan reflects previous floodplain management arrangements. This approach considered the impact of existing and future development on flooding in rivers and floodplains; the flood risk to life and property; the flood connectivity of floodplain assets; and the social and economic impacts of restricting flood work development. The above approach resulted in six management zones for the Floodplain Management Plan for the Macquarie Valley Floodplain 2020:Macquarie Management Zone A – major discharge areas (204,800 hectares (ha) or 17% of the floodplain)Macquarie Management Zone BH – major discharge areas in higher floodway areas (18,500 ha or 2% of the floodplain)Macquarie Management Zone B – flood storage and secondary flood discharge areas (314,900 ha or 25% of the floodplain)Macquarie Management Zone C – flood fringe and flood-protected developed areas (626,100 ha or 50% of the floodplain)Macquarie Management Zone CU – urban areas managed by local councils (6,000 ha or less than 1% of the floodplain)Macquarie Management Zone D – special environmental and cultural protection areas (70,200 ha or 6% of the floodplain) |