Attachment A to Judgment for 19Aug 2024 (6)

 Linke and Linke Surveys                                                             SLR Ref No: 620.31071-R01-v3.0-FEMP.docx
 Flood Emergency Management Plan                                                                                February 2024
 111 Lake Weyba Drive, Noosaville




1.1        Definitions
Table 1 provides a summary of flood related definitions which may be encountered in this document or during
a flood event.

Table 1      Flood Related Definitions
   Term/Abbreviation                                                       Definition
 AEP                           Annual Exceedance Probability – the likelihood of occurrence of a flood of given size or larger
                               occurring in any one year. AEP is expressed as a percentage (%)

 AHD                           Australian Height Datum – the adopted national height datum that generally relates to height
                               in metres above mean sea level.

 ALS                           Aerial Laser Survey

 ARR                           Australian Rainfall and Runoff

 BoM                           Bureau of Meteorology

 Catchment                     the area of land draining to a site. It always relates to a particular location and may include the
                               catchments of tributary streams as well as the main stream.

 Design flood event            a flood of known magnitude or AEP. In the case of Noosa Shire Council, this is the 1% AEP
                               event with allowance for a 20% increase in rainfall intensity for climate change, and adopting a
                               downstream tailwater level increase of 0.8m, also for climate change.

 Discharge (flow)              the rate of flow of water measured in terms of volume (measured in megalitres (ML) or cubic
                               metres (m3)) over time (measured in days or seconds), i.e., ML/d or m3/s. It is to be
                               distinguished from the speed or velocity of flow which is a measure of how fast the water is
                               moving rather than how much is moving. (Note 1 m3/s = 86.4 ML/d).

 DFL                           Defined Flood Level

 EAP                           Emergency Action Plan

 Effective Warning Time        the time available for flood-liable residents to defend their properties, if appropriate, and
                               evacuate themselves and their possessions after having received a warning to do so.

 FEMP                          Flood Emergency Management Plan

 FFL                           Finished Floor Level

 Flash Flooding                sudden and unexpected flooding caused by sudden local heavy rainfall or rainfall in another
                               area. Often defined as flooding which occurs within six (6) hours of the rainfall event.

 Flood Awareness               an appreciation of the likely effects of flooding and knowledge of the relevant flood warning,
                               response and evacuation procedures.

 Flood Study                   a study to determine and document the nature of flooding for an area. It usually includes a
                               review of history of flooding; and for detailed studies an understanding of flood velocity,
                               depth, frequency and extent.




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