fish hatchery salmon swimming stream |
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| navigate by keyword : assist attraction biologist bonneville closed columbia concrete dam duty eco fish fishing flowing gate gates green hatchery industry jump ladder ladders lock numbers oregon power record remain river runs rushing salmon spawn spawning species steelhead stream sustainable swimming tourist trying upstream water |
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| Salmon trying to jump over a gate at a fish hatchery at the Bonneville Dam. The gates remain closed until a fish biologist is on duty to record species and numbers. |
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