Hungry seagulls still hover above the pipe that delivers migrating salmon
back to the Columbia River below Bonneville Dam, but officials believe
the predators’ impact on the young fish has been minimized since a water
cannon began spraying the air last Friday.
The two-mile pipe, or flume, marks the end of the fishes’ journey through
a new bypass system at Bonneville Dam’s second powerhouse. The Corps of
Engineers expects the $62 million improvements to increase juvenile fish
survival …
