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Upstream passage of adult sea trout (Salmo trutta) at a low-head weir with an Archimedean screw hydropower turbine and co-located fish pass

Dodd, Jamie R.; Bolland, Jonathan D.; Hateley, Jon; Cowx, Ian G.; Walton, Sam E.; Cattaneo, Marco E. G. V.; Noble, Richard A. A.

Authors

Jon Hateley

Ian G. Cowx

Sam E. Walton

Marco E. G. V. Cattaneo



Abstract

© 2018 CSIRO. The exploitation of riverine systems for renewable energy has resulted in large numbers of small-scale hydropower schemes on low-head weirs. Although considered a clean and 'green' energy source in terms of emissions, hydropower can affect upstream migrating species by diverting flow away from viable routes over the impoundment and attract fish towards the turbine outfall. In an attempt to reduce this negative effect, hydropower outfalls with co-located fish-passage entrances are recommended, utilising turbine flows to attract fish towards the fish pass. The present study used acoustic telemetry to understand the performance of a co-located Larinier fish pass at a low-head hydropower scheme at a weir on the tidal Yorkshire Esk, England. The majority of the sea trout (anadromous Salmo trutta L) individuals that approached the impediment were attracted to the hydropower and the co-located fish pass. Fish ascended through the pass under a wide range of river flows, tide heights, downstream river levels and hydropower flows, and there was no evidence that the hydropower operation affected fish-pass ascent. The information presented is urgently required to inform management decisions on the operation of hydropower schemes during the migratory period of salmonid fish, and help determine best-practice designs and operation at these facilities.

Journal Article Type Article
Publication Date Sep 12, 2018
Journal Marine and Freshwater Research
Print ISSN 1323-1650
Publisher CSIRO Publishing
Peer Reviewed Peer Reviewed
Volume 69
Issue 12
Pages 1822-1833
APA6 Citation Dodd, J. R., Bolland, J. D., Hateley, J., Cowx, I. G., Walton, S. E., Cattaneo, M. E. G. V., & Noble, R. A. A. (2018). Upstream passage of adult sea trout (Salmo trutta) at a low-head weir with an Archimedean screw hydropower turbine and co-located fish pass. Marine and Freshwater Research, 69(12), 1822-1833. https://doi.org/10.1071/MF18125
DOI https://doi.org/10.1071/MF18125
Keywords Ecology; Aquatic Science; Ecology, Evolution, Behavior and Systematics; Oceanography
Publisher URL http://www.publish.csiro.au/mf/MF18125

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