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by stevenrace
4332 days ago
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Per this comment, I checked out 'DamNation'. It was fascinating, thanks for the recommendation. The number quoted as $9,000/'Snakeriver Sockeye' that made the 800 mile journey upstream to Redfish Lake, Idaho. In 1992, as they tell it, only one fish made it. But that apparently was the first year after the project began. Then again, only 243 made it 2011 [1]. Only ~1,500 made it back to Granite lake, which is 400 miles upstream [2]. So it's part of a larger problem in the area. So the $40million spent equates to 222 fish per year on average. I'm pretty sure the 'Fish Canon', however humane, can at least match the 1 fish every 36hrs rate of existing systems. It's also worth noting the US Army Corp of Engineers ship large numbers of juvenile fish downstream on barges. Collecting them with the 'Fish Cannon' and then shipping them on barges back upstream (or furthest upstream lock) is just a budget/politics problem not one of technology. [1] http://seattletimes.com/html/localnews/2019705443_captivefis... [2] http://www.bpa.gov/news/newsroom/Pages/Snake-River-sockeye-c... |
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