Humber River Presentation.pdf

One of the weirs remains uncut because it was deemed

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done to facilitate the migration of trout and salmon upstream. One of the weirs remains uncut because it was deemed low enough for trout and salmon to jump over. The Raymore Park weir was too high for a notch to be effective therefore, a denil fishway was built at this location
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FISHWAYS Fishways are artificial structures designed to facilitate the upstream movement of fish past existing barriers. The size and design of fishways may vary and will depend on the characteristics of the barrier, the river, and the target fish species for passage. fishways are designed to reduce the velocity of water. This may be accomplished by constructing a series of small waterfalls, baffles or weirs, some of which may have a submerged opening or orifice The fish move upstream from pool to pool by jumping the barriers, navigating baffles or passing through the submerged orifices.
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Considering Alternatives
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Sea Lamprey
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Species at Risk Lake Trout Salmon Rainbow Trout Whitefish, Burbot Walleye Catfish
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  • Fall '14
  • G.J.Evans
  • Great Lakes, Retaining wall, Weir, low head weirs

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