Table 8 Site-specific ecological targets and associated flow indicators for Lower Border Rivers (in-channel flows) Without-development and baseline event Site-Specific Flow Indicators frequencies Minimum Flow Proportion of years Frequency - proportion of Proportion of rate required in Minimum event occurred Site-Specific Ecological Targets years event required years event the Barwon Continuous under modelled Timing occurred under River at Duration Low High modelled baseline Mungindi (days) uncertainty uncertainty conditions (%) (ML/d) conditions (%) (%) (%) Provide a flow regime which supports 4,000 5 October to December 32 24 39 17 recruitment opportunities for a range of 4,000 5 October to March 59 45 74 33 native aquatic species (e.g. fish, frogs, turtles, invertebrates) Minimum of 2 events in a Provide a flow regime which supports key year preferably one ecosystem functions, particularly those 4,000 11 summer/autumn and one 36 27 44 13 related to longitudinal connectivity and winter/spring but timing transport of sediment, nutrients and not constrained carbon Note: Multiplication of the flow rate by the duration and frequency (proportion of years event required) does not translate into the additional volume of water the site needs to be environmentally sustainable. This is because part of the required flow is already provided under baseline conditions. Additional environmental water required is the amount over and above the baseline flows.
Table 8 Site-specific ecological targets and associated flow indicators for Lower Border Rivers (in-channel flows) Site-Specific Ecological Targets Site-Specific Flow Indicators Without-development and baseline event frequencies Minimum Flow rate required in the Barwon River at Mungindi (ML/d) Minimum Continuous Duration (days) Timing Frequency - proportion of years event required Proportion of years event occurred under modelled conditions (%) Proportion of years event occurred under modelled baseline conditions (%) Low uncertainty (%) High uncertainty (%) Provide a flow regime which supports recruitment opportunities for a range of native aquatic species (e.g. fish, frogs, turtles, invertebrates) Provide a flow regime which supports key ecosystem functions, particularly those related to longitudinal connectivity and transport of sediment, nutrients and carbon 4,000 5 October to December 32 24 39 17 4,000 5 October to March 59 45 74 33 4,000 11 Minimum of 2 events in a year preferably one summer/autumn and one winter/spring but timing not constrained 36 27 44 13 Note: Multiplication of the flow rate by the duration and frequency (proportion of years event required) does not translate into the additional volume of water the site needs to be environmentally sustainable. This is because part of the required flow is already provided under baseline conditions. Additional environmental water required is the amount over and above the baseline flows.
EWR-Lower-Border-Rivers.docx