Narromine Floodplain Risk Management Study and Plan

Brief description

#Background
Narromine Shire Council, through its Floodplain Management Committee is undertaking a
Floodplain Risk Management Study and Plan for the town in accordance with the New South
Wales Government's flood prone lands policy and using procedures set out in the Floodplain
Development Manual, 2005. The results of the Study and the draft Plan are presented in this
report.

The Floodplain Risk Management Study used the data from the recent Narromine Flood Study
(LACE, 2006) to undertake a review of the physical, social and economic aspects of flooding on
the Macquarie River floodplain at Narromine in order to prepare the draft Floodplain Risk
Management Plan.

The Floodplain Risk Management Study summarised present day flooding conditions as
determined by the LACE, 2006 investigation and identified and assessed potential measures
aimed at reducing the impact of flooding on both existing and future development. This process
allowed the formulation of a draft Floodplain Risk Management Plan for Narromine having regard
to both existing flooding problems and to potential future development.

#Overview of Report
The Floodplain Risk Management Study and draft Plan are set out in this report. Contents of each
section of the report are briefly described below:

* __Section 2__, Baseline Flooding Conditions. This section includes a general description of the
Macquarie River catchment and a review of land use on the floodplain at Narromine. Social,
economic, physical and ecological aspects of existing flood behaviour are described. The
section reviews existing flood management measures, including flood warning and evacuation
practices.
* __Section 3__, Potential Floodplain Management Measures. Possible floodplain management
options for Narromine are outlined and assessed.
* __Section 4__, Selection of Floodplain Management Measures. Floodplain management strategies
comprising combinations of options are assessed in detail and a preferred strategy is outlined.
* __Section 5__, Draft Floodplain Risk Management Plan. The contents of the draft Floodplain Risk
Management Plan are summarised.

The report is supported by four Appendices, which provide further details of the investigations
leading to the preparation of the draft Floodplain Management Plan.

__Appendix A__ sets out the results of a detailed investigation of damages likely to be experienced
to residential, commercial and industrial property in Narromine in the event of major flooding.

__Appendix B__ reviews the operation of Burrendong Dam as a flood mitigation storage during flood
periods and its impact on downstream flooding.

__Appendix C__ sets out the draft Flood Policy for Narromine.

__Appendix D__ contains several exhibits derived from the Narromine Flood Study, 2006 which have
been included to assist the reader in understanding flooding patterns in Narromine.

Full description

Narromine Floodplain Risk Management Study and Plan -
Narromine Floodplain Risk Management Study and Plan -