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




  Term/Abbreviation                                                       Definition
Flood Warning                 flood warning involves the timely collection, interpretation and dissemination of flood
                              information before and during a flood event to enable the community to respond effectively
                              to the flood threat. The BoM is responsible for collecting rainfall and stream flow data,
                              operating flood prediction models and preparing and issuing flood warnings to the media, key
                              agencies and other bodies for non-flash flooding situations. Councils are responsible for
                              disseminating flood warnings to the local community, local authorities and other local bodies
                              for flash flooding and non-flash flooding situations.

Floodplain                    area of land adjacent to a creek, river, estuary, lake, dam or artificial channel which is subject
                              to inundation by the Probable Maximum Flood (PMF).

HAT                           Highest Astronomical Tide

Likelihood of Flooding        a quantitative or qualitative description of the likelihood that a specified event will occur. The
                              likelihood of occurrence of flooding can be measured in terms of Annual Exceedance
                              Probability (AEP)

Minor, Moderate and           BoM use the following definitions in flood warnings to give a general indication of the type of
Major Flooding                problems expected with a flood:
                                  • Minor Flooding: causes inconvenience such as closing of minor roads and the
                                     submergence of low level bridges.
                                  • Moderate Flooding: low-lying areas are inundated requiring removal of stock and/or
                                     evacuation of some houses. Main traffic bridges may be covered.
                                   •   Major Flooding: extensive rural areas and/or appreciable urban areas are flooded,
                                       with properties and towns isolated.

Peak Discharge (Flow)         the maximum discharge occurring during a flood event.

Probability                   a quantitative measure of the likelihood of occurrence of an event. It normally reflects the
                              relative frequency of or expectation that an event will occur, and is usually expressed as a
                              percentage, eg the probability of throwing a given number by rolling a dice is 1 in 6, or 16.7%.

PMF                           Probable Maximum Flood – the largest flood that could conceivably occur at a particular
                              location. This flood defines the maximum extent of land liable to flooding. The PMF event may
                              form the basis of evacuation planning and the identification of refuge areas.

PMP                           Probable Maximum Precipitation

Recovery                      the assisting of people and communities affected by emergencies to achieve a proper and
                              effective level of functioning.

Response                      the combating of emergencies and the provision of rescue and immediate relief services.

Risk                          the chance of something happening that will have an impact upon objectives. It is measured in
                              terms of consequence and likelihood.

Stormwater Runoff             inundation by local runoff. Stormwater flooding can be caused by local runoff exceeding the
                              capacity of an urban stormwater drainage system or by the backwater effects of mainstream
                              flooding causing the urban stormwater drainage system to overflow.

Waterway                      a river, creek, stream or watercourse that may permanently or sometimes flow throughout
                              the year.



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