Chapter 11
Fisheries Sustainability
Publication: Inland Navigation: Environmental Sustainability
Abstract
Maintaining environmental equilibrium on waterways with locks and dams requires provisions for allowing fish migration both upstream and downstream. On rivers with fish species that migrate between freshwater and saltwater and back to freshwater, special features are required at locks and dams to maintain their survival. Initially fish ladders were provided for upstream migration of adult salmon and downstream juvenile salmon migration was over spillways or through powerhouses. The juvenile fish bypass systems in place at the lower Columbia and Snake River dams guide fish away from turbines by means of submerged screens positioned in front of the turbines. A bypass channel is an option for fish passage around a river obstruction that would prevent migration. Fishing regulations and restrictions are another method to manage fisheries in inland waterways.
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References
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Information & Authors
Information
Published In
Inland Navigation: Environmental Sustainability
Pages: 91 - 111
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Jan 10, 2019
ASCE Technical Topics:
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