1995 biological opinion for operation of the Columbia River power system

was to relocate the dams juvenile outfalls to an area with higher
velocity water. Predators, such as pikeminnows, cant feed as
efficiently on the downstream migrants in faster water.
So, the Corps completed a two-mile juvenile bypass outfall flume and
put
it into service last year in March. At the same time, it improved the
bypass facilities at the second powerhouse, something the Corps says
helps juvenile fish pass through the dam more easily.
NMFS performed onsite tests at a …

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