Construction work is scheduled to begin this fall at which time the powerhouse will be shut down and water usually conveyed through the powerhouse will be passed through the
bypass channel. During some of the construction project, flows in the
bypass channel between Madison Dam and Powerhouse will be increased significantly, but flows downstream of the plant will be unaffected during the project
The flood defences, on the right bank of the river
bypass channel, will be up to 3.2ft above the existing ground level.
A
bypass channel was built to allow water to flow through while the channel is being restored, said Leslie Berns, the district's landscape ecology manager.
These included dredging Roath Lake, creating flood storage areas upstream, dredging Roath Brook, building a
bypass channel, installing tidal doors and using temporary defences.
In a report, Andrew Farrow, the council's chief officer for planning and environment, said: "The previous scheme, designed and developed on behalf of the local authority by Ymgynghoriaeth Gwynedd Consultancy (YGC), consisted of a culverted
bypass channel to the west of Mold and large underground attenuation tanks at Ysgol Glanrafon.
Also, in a Joseph Electronics exclusive, a
bypass channel allows users to add more A/V data signals in either direction.
The material may pass through a mixing flight that includes an undercut for dispersive mixing and
bypass channel for distributive mixing.
The Trust will raise funds to buy the two dams slated for removal, and will equip a third one with a fish
bypass channel. Among the fish species that will benefit is the endangered Atlantic salmon (Salmo salar).
The project included a new
bypass channel at the southern end of the canal.
After a
bypass channel was dug and shored, four, 8 by 20 foot trench boxes with 84-inch spreaders were set upstream in the river one at a time, and then filled with dirt to create a solid cofferdam.
The five violations identified by the corps stem from work the utility performed last year to protect a fish barrier and
bypass channel at the western end of the canal.