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Lake Cushman Floating Surface Collector

Tacoma Power’s Cushman Floating Surface Collector (FSC) is a breakthrough project in downstream fish passage over high dams. The upstream capture scheme was modified by placing the capture module upstream of the fish screens – reducing the high-cost footprint of the FSC module by as much as 35%. The flow distribution across the fish screens was improved by pumping from individual screen bays and providing a simple and economical porosity control design, through the use of low speed (504 rpm) vertical propeller pumps using Vee belt drives for speed reduction. Traveling water screens were also designed to reduce cost, save space, and reduce the mechanical complexity.

Project Info

Project Name

Lake Cushman Floating Surface Collector

Category

Completion

2014

City

Lake Cushman

Owner

Tacoma Public Utilities

General Contractor

Dix Corporation

Delivery Method

Fixed

Sustainability

Awards

Related Projects

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CONTACT INFO

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Seattle, WA 98121

1100 Merrill Creek Parkway
Everett, WA 98203

Estimating Inquiries
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