Woolgoolga Floodplain Risk Management Study and Plan

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Woolgoolga Floodplain Risk Management Study and Plan

Council with the support of funding grants from NSW, EHO have undertaken a Floodplain Risk Management Study and Plan for Woolgoolga. This follows the completion of a Flood Modelling Study for Woolgoolga in 2012, which produced comprehensive flood mapping and technical reporting - the first step in the floodplain management process. 

Woolgoolga Flood Modelling Study 2012

This was prepared to define the existing flood behaviour in the Woolgoolga Lake catchment and establish the basis for subsequent floodplain management activities.  The primary objective is to define the flood behaviour of the Woolgoolga Lake catchment through the establishment of appropriate ​models. The study has produced information on flood flows, velocities, levels and extents for a range of flood event magnitudes under existing catchment and floodplain conditions. Specifically, the study incorporates:

  • Compilation and review of existing information pertinent to the study and acquisition of additional data including survey as required; 

  •  Development and calibration of appropriate hydrologic and hydraulic models;

  •  Determination of design flood conditions for a range of design event including the 20% AEP, 5% AEP, 2% AEP, 1% AEP, 0.2% AEP and PMF event; and

  • Presentation of study methodology, results and findings in a comprehensive report incorporating appropriate flood mapping.