Smith-Root Inc. makes such devices. I'm not sure about the size of the opening at Lions Gate Bridge, but some fairly large inlets could theoretically employ such a technology. Check out www.smith-root.com and click on barrier systems. To be honest, they seem to be not cost-competitive with other barrier technologies. Other physical (nets, gunderboom, louvre, etc.) and behavioral barriers (acoustic and strobes) are either more effective, or more cost effective than electrical. In the end, it really depends on what you are trying to keep out, the level of success required at keeping them out, and the cost that you are willing to pay for such a service.
Justin C Johnston
From: Scientific forum on fish and fisheries [mailto:[log in to unmask]] On Behalf Of Piper
Sent: Tuesday, March 10, 2009 2:04 PM
To: [log in to unmask]
Subject: Re: Electrofishing workshops (boat and backpack)
Can electronic methods be used to create underwater electric fences for fish
in ocean inlets?
For example, could an electric fence be used under the Lions Gate Bridge in
Vancouver to keep the salmon within Burrard Inlet as a huge closed
containment tank? Or would other methods work better?
----- Original Message -----
From: "Eldan Goldenberg" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, March 10, 2009 10:28 AM
Subject: Electrofishing workshops (boat and backpack)
> NWETC is pleased to announce 2009's schedule of backpack & boat
> electrofishing workshops, taught by Dr. Jim Reynolds, professor emeritus
> at the University of Alaska, Fairbanks.
> Both the boat and backpack versions are three-day courses, with most of
> the middle day devoted to getting hands-on experience in the field.
> These will be the public course dates for this year:
> BACKPACK electrofishing, March 23-25 in Santa Cruz, CA
> BOAT electrofishing, May 20-22 in San Antonio, TX
> BACKPACK electrofishing, September 15-17 in Vancouver, WA
> Full details and online registration forms are available through the
> links above.
> About the Instructor:
> Dr. James B. (Jim) Reynolds is Professor Emeritus of Fisheries at the
> University of Alaska Fairbanks where he served on the faculty during
> 1978-1999. Jim is a recognized authority on electrofishing and ecology of
> northern fishes. He has taught electrofishing short courses to over 1,500
> biologists in the U.S. and Canada, is the author of the chapter on
> electrofishing in "Fisheries Techniques" published by the American
> Fisheries Society and has written numerous research articles on the
> subject. Jim is Past President of the Education and Fisheries History
> sections and Missouri and Alaska chapters of the American Fisheries
> Society. He also provided technical guidance for the NOAA Fisheries
> electrofishing guidelines (see link above). Other instructors will assist
> during the field portion of the class.
> $695 (*$595 reduced tuition available for Native American tribes;
> government employees; nonprofits; students; and AFS, NAEP, NEBC, NWAEP
> members). Group discounts are available for any organization sending
> more than one person - email me for details. You may register via the
> URLs above or by calling the Northwest Environmental Training Center at
> Eldan Goldenberg
> Professional Training Program Manager
> Northwest Environmental Training Center
> A non-profit 501(c)(3) program of EOS Alliance
> Improving public health and environmental quality through citizen
> engagement and stewardship
> v: 206-762-1976 --- f: 206-762-1979