Environmental The works projects can provide significant environmental High outcomes benefits by maintaining high value areas of floodplain in a healthy condition, and allow the maintenance of these areas as critical habitat refuges during extreme dry periods. Information Sufficient. High adequacy Project progress Business cases submitted. High Dependency on Not dependent, but operation of will be linked to other High other submitted Murray works projects to maximise supply contribution projects to achieve volumes. outcome Significant identified Some risks have been identified and addressed by the Moderate issues likely to be proponent but there are risks areas to still be addressed. resolved Significant issues not Ongoing operation and maintenance costs have not been Low identified in addressed raising concerns about long-term sustainability of documentation can the projects. be managed Additional value could be ascribed to this project, if extreme dry periods become more frequent in the future under climate change. Egress of water from forest may need to be considered as an issue for water quality. External risks None identified. Implementation of the TLM works provides High managed management experience for issues that might arise with this package of works. Basis for supply Inferred from the modelling of TLM works using a relative Moderate contribution estimate estimate of area watered. Plausible supply 40 - 50 GL Moderate contribution range Minimal impacts Linkages to projects involving rule changes, especially those High from changes to river projects that relate to changing flow timing patterns operational rules Key factors limiting Limits of change. Moderate project supply contribution addressed Investment Smaller projects in the group of nine are likely to yield a Moderate considerations relatively low supply contribution volume benefit at a significant cost. The regional and community benefits of maintaining all nine projects needs to be considered.
Environmental outcomes The works projects can provide significant environmental benefits by maintaining high value areas of floodplain in a healthy condition, and allow the maintenance of these areas as critical habitat refuges during extreme dry periods. High Information adequacy Sufficient. High Project progress Business cases submitted. High Dependency on other submitted projects to achieve outcome Not dependent, but operation of will be linked to other Murray works projects to maximise supply contribution volumes. High Significant identified issues likely to be resolved Some risks have been identified and addressed by the proponent but there are risks areas to still be addressed. Moderate Significant issues not identified in documentation can be managed Ongoing operation and maintenance costs have not been addressed raising concerns about long-term sustainability of the projects. Additional value could be ascribed to this project, if extreme dry periods become more frequent in the future under climate change. Egress of water from forest may need to be considered as an issue for water quality. Low External risks managed None identified. Implementation of the TLM works provides management experience for issues that might arise with this package of works. High Basis for supply contribution estimate Inferred from the modelling of TLM works using a relative estimate of area watered. Moderate Plausible supply contribution range 40 - 50 GL Moderate Minimal impacts from changes to river operational rules Linkages to projects involving rule changes, especially those projects that relate to changing flow timing patterns High Key factors limiting project supply contribution addressed Limits of change. Moderate Investment considerations Smaller projects in the group of nine are likely to yield a relatively low supply contribution volume benefit at a significant cost. The regional and community benefits of maintaining all nine projects needs to be considered. Moderate
SDL-Adjustment-Stocktake-Report.docx