The corner collector at Bonneville Dam (below, close up; right, aerial view) takes juvenile fish around the dam. Juvenile fish survival through this route is 100 percent.
At The Dalles Dam, a sluiceway provides surface passage. The Dalles Dam also has a spillwall installed on the downstream side that guides juvenile fish away from predators after they pass the dam.
Surface passage for juvenile fish at Lower Monumental Dam is through spill and spillway weirs. Note the adult fish ladder at the right of the photo.
April 17, 2015: Juvenile fish are getting safely past McNary Dam. See recent media coverage here.
See the surface passage and other routes at each FCRPS dam and the survival estimates based on the most recent scientifically designed tests. All dams are on track to meet the BiOp performance standards for juvenile fish survival, 96 percent for spring chinook and steelhead; 93 percent for summer migrating fish.
Bonneville Dam
The Dalles Dam
John Day Dam
McNary Dam
Ice Harbor Dam
Lower Monumental Dam
Little Goose Dam
Lower Granite Dam
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