| ISAB review of the USACE Capital Construction Program: Part II.A Surface Bypass, document ISAB 98-7 (4267 words) |
 | Juvenile salmon tend to be in the upper 30 to 35 feetof the water mass and the direction and velocity of its movement direct the movements of the juveniles. |
| It was not until development was well underway that studies demonstrated that juveniles passing through the turbines experienced substantial levels of mortality, in the range of 11% to 15% in the first studies. |
| At Wanapum Dam it was found that the prototype surface flow bypass was not sufficiently effective in collecting fish, but that it was effective in diverting a high percentage of the fish away from the turbine intakes and toward the spillway. |
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