Studies to evaluate the effectiveness of extended-length screens at McNary Dam, 1993

In 1993, a redesigned extended-length traveling screen became available for parallel testing against the extended-length bar screen. Specific research objectives for McNary Dam in 1993 were 1) To evaluate the ability of the extended-length submersible bar screen and the redesigned extended-length submersible traveling screen to guide juvenile salmonids, especially yearling and subyearling chinook salmon during the spring and summer outmigrations. 2) To determine the effects of the extended-length submersible bar screen and the redesigned extended-length submersible traveling screen on juvenile salmonid descaling. Contract no. E86910060