Investigating New Fish Screening Technology and Modification of Existing Infrastructure to Reduce Impacts of Invasive Quagga and Zebra Mussels on Reclamation Facilities

Project ID: 4111
Principal Investigator: Cathy Karp
Research Topic: Invasive Species
Priority Area Assignments: 2010 (Zebra and Quagga Mussels), 2011 (Zebra and Quagga Mussels), 2012 (Zebra and Quagga Mussels)
Funded Fiscal Years: 2010, 2011 and 2012
Keywords: None

Research Question

* The invasion of exotic mussels is here, so what can be done at existing fish screen facilities to improve resistance to mussel fouling by colonization?

* What new screening and operation technologies are available that are resistant to mussel attachment and can be successfully operated in waterways with high densities of mussels?

Need and Benefit

We do not know the limits of expansion of the exotic mussels. We must assume that, in warmer climates, they will have good chance of establishment. The testing and determination of technologies to be able to allow water delivery in the mussel-infested areas must be developed prior to infestation.

Contributing Partners

Contact the Principal Investigator for information about partners.

Research Products

Bureau of Reclamation Review

The following documents were reviewed by experts in fields relating to this project's study and findings. The results were determined to be achieved using valid means.

Summary of Initial Efforts to Begin Fish Screen Quagga Mussel Tests (final, PDF, 546KB)
By Cathy Karp
Report completed on March 28, 2014

We began to secure a site and equipment to test the ability of widely used fish screens to resist fouling by quagga mussels. Initial efforts did not succeed as we were unable to secure power and security at a site on the lower Colorado River below Hoover Dam. Actual screen test modules were secured for future deployment once a more suitable site became available. Performance of one of the test screen modules, the ISI screen, was tested in the Hydraulics Laboratory (see attached report).

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Last Updated: 6/22/20