CONTENTS 



Page 



Introduction 1 



£xperin-iental equipnnent and design 2 



Pipe configuration . 2 



Illumination 3 



Release of fish 3 



Timing of fish 3 



Comparison of fish passage , 4 



Effects of various factors on fish passage 4 



Water velocity 4 



Velocities in 0.3-m. -diameter pipe 4 



Velocities in 0.6-m. -diameter pipe „ 5 



Velocities in 0.9-m. -diameter pipe , 5 



Pipe diameter ° 



Entrance and exit conditions , "^ 



Changes in illumination , 7 



Changes in size 7 



Illumination 9 



Passage times 9 



Percentages of fish that completed passage 10 



Sharp turns in the pipe 11 



Water depth 13 



Capacity tests 17 



Sunnmary and conclusions 17 



Results of tests 17 



Conclusions , 17 



Acknowledgments , 18 



Literature cited 18 



