Evaluation of fish guidance efficiency of submersible traveling screens and other modifications at Bonneville Dam Second Powerhouse, 1994

Because of the need to establish and confirm accurate FGE values at this dam, a short series of FGE tests was conducted during the 1994 spring outmigration to evaluate how representative or anomalous the 1993 FGE results were. These tests were also conducted in Turbine Units 12, 15, and 17, but only in the non-TIE slots (1993 tests had been conducted in adjacent TIE and non-TIE slots). Since the 1993 results did not indicate large differences between 4- and 6-unit operation, 4- unit tests were not conducted in 1994 and comparisons were made between 6- and 8-unit operation only. Contract no. E96940027