Scope of Work
Cianbro installed an elevator-operated fish lift located approximately 80 ft downstream of the dam, which is used to relocate fish upstream.

Project Details

• Installed a large steel plated collection chamber on the down side of the dam for fish relocation 
• Installed a moving screen/gate, called a crowder, to “crowd” the fish over the hopper (large bucket to hoist the fish up) 
• Installed a steel “flume,” approximately 100 ft long to allow the fish to be viewed, counted, and released upstream of the dam
• Fabricated approximately 100 tons of structural steel, including hand rails, ladders, grating, mechanical moving parts, and neoprene seals using a mixture of Stainless Steel, UHMW Plastic, and Galvanized Steel 
• Assembled/modularized flume panels in the shop 

In an effort to minimize the impact to power generation, Cianbro proposed a design that spans the Unit #1 tailrace with 36 inch beams and supports a steel collection chamber. After the fish are collected they are raised to an elevated flume that runs along the powerhouse and exits at the face of the dam.