Murray cod and modern fish screens: influence of water velocity and screen design on the entrainment and impingement of larval and young-of-year fish at water offtakes

Stocks, Jerom R.; Walsh, Chris T.; Rayner, Thomas S.; Boys, Craig A.

doi:10.1071/mf23239

Mar. Freshw. Res.

2024

DOI: 10.1071/mf23239

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Murray cod and modern fish screens: influence of water velocity and screen design on the entrainment and impingement of larval and young-of-year fish at water offtakes

Jerom R. Stocks,

Chris T. Walsh,

Thomas S. Rayner

et al.

Abstract: Murray cod and modern fish screens: influence of water velocity and screen design on the entrainment and impingement of larval and young-of-year fish at water offtakes. Marine and Freshwater Research 75, MF23239.

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Realising the benefits of modern fish-protection screening in Australia

Rayner,

Boys,

Conallin

et al. 2024

Mar. Freshw. Res.

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Context Modern fish-protection screens are being implemented globally to conserve aquatic ecosystems and protect water infrastructure. Australian governments have invested ~A$40 × 106 towards incentive programs. However, evaluation remains limited. Aims This study aimed to review progress, summarise research, and identify future priorities for screening in Australia. Methods The study analysed screen installations to date, estimating their benefits for native fish and agricultural water supply. Key results In New South Wales, 36 pumped water diversions were screened from 2018 to 2024. These installations protect over 819,000 native fish annually and can deliver up to 2600 ML of cleaner water per day, servicing over 230 km2 of irrigated agriculture. By 2026, these figures are set to rise to 48 sites, 1.72 × 106 native fish year−1 and 5461 ML day−1 of water. Conclusions Although incentive programs are generating substantial public benefits, valued at least A$177 ML−1 of water passing through a modern screen, and with benefit–cost ratios averaging 4:1, installation costs remain high and national progress has been limited. Implications Addressing these challenges is crucial to realising the full potential benefits of screening. Action is required to identify high-priority water diversions, improve affordability, encourage industry stewardship, and pursue advancements to facilitate wider adoption.

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Realising the benefits of modern fish-protection screening in Australia

Rayner,

Boys,

Conallin

et al. 2024

Mar. Freshw. Res.

View full text Add to dashboard Cite

show abstract

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Murray cod and modern fish screens: influence of water velocity and screen design on the entrainment and impingement of larval and young-of-year fish at water offtakes

Abstract: Murray cod and modern fish screens: influence of water velocity and screen design on the entrainment and impingement of larval and young-of-year fish at water offtakes. Marine and Freshwater Research 75, MF23239.

Cited by 1 publication

References 43 publications

Realising the benefits of modern fish-protection screening in Australia

Realising the benefits of modern fish-protection screening in Australia

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