For many years in South East Queenland the eWater Source modelling platform has been the model of choice for applications such as the Annual Healthy Land and Water Ecosystem Health Report Card process and also for a range of other technical and modelling investigations.
Recently however, new and more functional modelling platforms have been developed that are progressively being applied in the region. These modelling platforms, with separate strengths and capabilities, are the Building Catchment Resilience (or BCR) tool (developed by Griffith University and others with funding from the Ian Potter Foundation) and the Dynamic SedNet model (developed by eWater and Qld State Government personnel). This paper will describe briefly the history of catchment modelling in the region and will then introduce and provide worked examples of each of the named modelling tools. These worked examples will demonstate the significant advances that are being made with modelling in South East Queensland and importantly will illustrate how these advances are better informing catchment management planning and decision making.