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fish ladder
(redirected from Fish ladders)

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
fish ladder
n.
A series of pools arranged like ascending steps at the side of a stream, enabling migrating fish to swim upstream around a dam or other obstruction.

fish ladder
n
(Life Sciences & Allied Applications / Fishing) a row of ascending pools or weirs connected by short falls to allow fish to pass barrages or dams
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.fish ladder - a series of ascending pools providing a passage for salmon to swim upstream past a damfish ladder - a series of ascending pools providing a passage for salmon to swim upstream past a dam
passage - a way through or along which someone or something may pass


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By contrast, if the Emerald People's Utility District succeeds in adding energy-producing turbines to flood-control dams at Dorena Lake and Fall Creek, the dams won't get fish ladders on which fish can head upstream, or any new channels to use heading downstream.
In response to this problem, Bonneville and some of the other Columbia dams have installed fish ladders so spawning salmon can swim past the man-made obstructions.
Dams are being removed in the Acushnet River, and several existing fish ladders throughout the state are being improved.
 
 
 
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