fish ladder

Environment Agency completes fish pass that will help fish like Atlantic salmon and brown trout populate a further seven kilometres of the River Churnet.

The efficiency of the fish pass is monitored closely; surveys are carried out to judge the effect the barrier has on migrating salmon and sea trout.

The structure constitutes the final piece of a 'fish pass jigsaw' on the River Derwent, permitting fish to move freely from the River Tyne to the Derwent Reservoir.

"The new fish pass facilities will be suitable for all species designed to latest Environment Agency guidance.

The trust project is the final piece in the jigsaw for enabling fish movement on the Derwent following the construction of fish passes at Derwenthaugh and Lintzford, which have already proved a success with a greater diversity and density of fish species now found upstream of those sites.

"The fish pass is a perfect example of this commitment and I would like to thank Natural Resources Wales for their input.

The figures follow moves to improve conditions for migrating fish, which includes the official opening of Hexham Fish Pass in March by angler and actor Robson Green.

Once completed, the new fish pass will open up over 38km of river to migrating fish such as salmon, sea trout and eels.

There's a new fish pass at Blackweir, right in the middle of Cardiff.

The project consists of a pool and traverse fish pass channel, and a head race channel supplying water to the generating equipment.

Visualization software, called En-sight, from CEI of Morrisville, N.C., lets Voith researchers watch the virtual fish pass through a hydraulic turbine and pinpoint what forces generated by the turbine could harm the fish.

By the time the leptocephali reach shallow offshore waters, they have transformed into colorless "glass eels." These tiny snakelike fish pass through estuaries during the winter and then head up rivers the following spring, becoming yellowish as they grow.

PARTNERS have pooled their expertise to create a special fish pass on a picturesque stretch of river.

Their voyage will be made easier in future with the trust working with Northumberland County Council to create a fish pass at the bridge site.