Generalizing trends in upstream American eel movements at four East Coast hydropower projects
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Published source details
Mack K. & Cheatwood T. (2022) Generalizing trends in upstream American eel movements at four East Coast hydropower projects. Journal of Fish and Wildlife Management, 13, 473-482.
Published source details Mack K. & Cheatwood T. (2022) Generalizing trends in upstream American eel movements at four East Coast hydropower projects. Journal of Fish and Wildlife Management, 13, 473-482.
Actions
This study is summarised as evidence for the following.
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Install climbing structures for fish Action Link |
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Install climbing structures for fish
A study in 2010–2019 in a river on the border of the USA and Canada (Mack & Cheatwood 2019) reported that two eel ladders at a hydropower station were used by some American eels Anguilla rostrata to migrate upstream but use declined over seven years. The average number of eels using the eel ladders was 376 eels/day in 2011 and 7 eels/day in 2018. Eels used the ladders from June to October each year. Overall, 215,300 eels used the eel ladders from 2010–2014, compared to 73,000 eels in 2015–2019. Two eel ladders were installed either side of a dam, one in 1974 and one in 2006. The ladders deposited eels into the river 300 m upstream of the dam. Eels were counted moving through the ladders using a photoelectric counter. Eel capture data from 2010 to 2019 were obtained from public records or project operators (see paper for details).
(Summarised by: Vanessa Cutts)
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