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  "description" : "Moreton Bay Regional Floodplain DatabaseStorm Tide FloodingVersion 2.1.0 (June 2015)This theme shows potential flooding caused by abnormal increases in tide. Strong winds associated with  a cyclone or intense low pressure weather system can push a raised mound of seawater, called a storm surge, onto the shoreline. This surge when combined with the astronomical tide and increased wave action is called a storm tide. Storm tide occurs in low-lying locations near the coast. MethodologyCoastal (offshore) hydrodynamic modelling using a two-dimensional, curvilinear grid. A  bathtub approach has been used to extrapolate the model results onto the landward side of the coastline. Refer technical publications available from Council's website for further detail.Existing Conditions Cyclonic ScenarioModelling a storm tide under existing climate conditions - cyclonic activity.PurposeTo describe existing flood behaviour during a storm tide caused by cyclonic activity.MethodologyCoastal (offshore) hydrodynamic modelling using a two-dimensional, curvilinear grid. For this scenario an increase in average wind speed of 10% is assumed. A  bathtub approach has been used to extrapolate the model results onto the landward side of the coastline. Refer technical publications available from Council's website for further detail.Flood DepthIndicates the approximate depth of potential inundation during a computer-modelled flood event (not actual recorded levels).This is the gridded representation of the standard depth classifications used in public products. Depth ranges are: (1) 0 - 0.25m, (2) 0.25 - 0.5m, (3) 0.5 - 1.0, (4) > 1.0m AHD.depth Modelled ProbabilityThe probability of flooding represented by this dataset is:1% Chance of Flooding in Any One YearLikelihood: PossibleAnnual Exceedance Probability (AEP): 1%Average Recurrence Interval (ARI): 100 YearA large uncommon flood event that is rarely observed but neverthess still possible. Over a long period of time an event of similar size may occur on average once every 100 years. It is therefore likely an event of this size will occur at least once during a single lifetime. It is less likely, but still possible, for a flood of this size to occur more than once in a single lifetime. A flood event of similar size occurred in the middle and upper reaches of the Caboolture River during January 2011.Version Notes2.1.0 - TUFLOW modelling with a dynamic Storm Tide boundary (June 2015)Version Resolution: 2.5mData Reliability: AIndicates the flood data is of the highest available standard and has been prepared using the most recent flood model and input data\nFurther InformationFor additional information on flooding in the Moreton Bay Region please see Council's website: http://www.moretonbay.qld.gov.au/floodcheck/",
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