salmon ladder

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salmon ladder

a series of steps in a river designed to enable salmon to bypass a dam and move upstream to their breeding grounds
References in periodicals archive ?
It has supported and enabled 190 major projects but hundreds of smaller schemes too, from improvements to village halls and parish centres to local parks, salmon ladders in the Thames and a Hindu temple in the Midlands.
Moreover, they're too fat to leap salmon ladders, and may clog up streams and prevent wild salmon from reaching their spawning grounds.
Salmon Ladders' owner Martyn Arbib collected his own prize after the Paul Cole-trained gelding landed the Group 3 Perpetual St Simon Stakes under a good ride from Richard Quinn.
Doug said: 'We started seeing the first signs of fish eight or nine years ago, and since then obstructions have been cleared and three salmon ladders have been built.