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Fall 2021
Supersaturation of total dissolved gasses (TDG) downstream of hydropower dams and their consequences for fish have been identified as one of the key potential impacts of hydropower operations on fish biodiversity and fishery productivity. It has been recorded that fish exposed to high TDG levels...
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Transport and Transfer of Total Dissolved Gases in the Lower Columbia River Hydropower System
DownloadSpring 2020
Hydropower facilities can generate elevated or supersaturated total dissolved gases (TDGs) during spill operations that can impose environmental and ecological risk to downstream habitat, particularly to fishes causing gas bubble disease and mortality. Assessment of such impact and management of...