A strategy for boosting salmon and steelhead numbers in the Columbia/Snake river basins supported by the Northwest Power and Conservation Council in its Fish and Wildlife Program, as well as by Northwest Tribes, is to reintroduce the fish into habitats where salmonids once existed historically but are now blocked by high head dams. Known as trap and haul, capturing fish below a dam and transporting them into, hopefully pristine habitat upstream, is one mechanism for expanding salmonids’ ranges.
