While not part of the 2008 biological opinions issued by the National Marine Fisheries Service and U.S. Fish and Wildlife Service, the facility will help the Corps and other federal agencies meet requirements to prevent harmful impacts to spring Chinook salmon and bull trout listed under the Endangered Species Act. Returns of wild adult spring Chinook salmon to the trap since it opened in 2010 have ranged between 250 and 525. We expect similar returns in the future until a long-term solution is implemented to help improve survival of juvenile salmon attempting to pass the dam on their way downstream from their spawning grounds to the ocean.