fish ladder

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Related to Fish pass: Fish ladders, fish bass

fish ladder

[′fish ‚lad·ər]
(civil engineering)
Contrivance that carries water around a dam through a series of stepped baffles or boxes and thus facilitates the migration of fish. Also known as fishway.
References in periodicals archive ?
The Environment Agency and Tyne Rivers Trust have completed preliminary design work for a fish pass, and are now seeking funding.
It is a pretty part of the River Derwent and we wanted a fish pass which would blend in and not stick out like a sore thumb," said Mr Phillips.
The existing fish pass was added to the original weir in the 1930''s and does not help fish to pass over the weir EAW chiefs said.
The fish pass on Radyr Weir is not ideal and it is next in line for a redesign because a new hydroelectric mini-power station is going to be built on the weir anyway.
He also produced detailed designs for the fish pass channel and the inlet structure, which incorporates a penstock and an advanced electronic fish counter.
A salmon makes its way upstream on the River Tyne in Hexham, as tens of thousands of the fish have been helped by a new fish pass in a once-in-a-lifetime journey to spawn Owen Humphreys
The counts through the existing pass should be taken in context as there are other potential routes over the barrage, including the main gates, through the slalom, and the new fish pass.
The new fish pass has been built as part of the Agency's 'Salmon for tomorrow' project.
CUTLINE: This turbine was designed by Alden Research Laboratory to help fish pass through hydroelectric dams.
The Environment Agency has started work on a refurbishment of a Shropshire fish pass allowing salmon to return to spawning grounds on the Severn.
Contract notice: development of a fish pass at the lispach dam
The Environment Agency has seen a record number of fish pass through its Riding Mill fish pass in Northumberland.