fish ladder

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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 utility agreed to build the $57 million fish passage project - both the fish ladder to take fish upstream and the screen and tunnel to help them swim down - when it signed an agreement in 2008 with 16 state and federal agencies, Native American tribes and environmental groups.
The Final EIS released today evaluates and discloses the potential effects of a No Action alternative and five action alternatives for improving fish passage at the Intake Diversion Dam.
While there certainly are lessons to be learned, no one should expect the removal any time soon of the Snake dams, which generate large amounts of electricity and where many millions of dollars have been spent on sophisticated fish passage systems.
Contract notice: Construction Of A New Fish Passage Facility At The Threshold Of The Bridge Of Aire-Sur-L~adour (Bridge) Rd834
Tenders are invited for The work includes construct a new fishway to provide fish passage over an existing water diversion dam; an upgrade surface water intake structure; an upgraded intake screening system and a renovated water diversion dam that was damaged during past floods.
The unresolved issue of fish passage at Dorena Dam lurks in a dark corner shadowed by walls of corporate illusions of "greenness" and legislative laws protecting the environment.
The state agency believes that applying to add hydropower is a "trigger" to make improvements to fish passage, Homolka said.
Weve shared expertise, experience and costs to remove these barriers to fish passage.
Over a period of several weeks, 130 coho will be captured at the Willamette Falls Fish Passage, tagged, then released to continue their spawning run.