45 



TABLE 10. Relationship between relative change in the fall to spring estimates of 

 number of age I and older rainbow trout and mean fall to spring flows 

 (cfs) in the Hildreth Section of the Beaverhead River. Range of average 

 daily flows in parenthesis. 



Number Mean Flow Relative change in no. of rainbow trout (%) 1/ 

 Fall-Spring of Days Fall-Spring Fall-Spring 



■33 



-15 



- 5 



- 3 

 7 



40 

 68 



68?/ 



40 



i/ v = No. age II & older (spring) - No. age I & older (fall) lnn 

 - No. age I & older (fall) x luu 



2/ = % change of age II & older rainbow trout. Valid spring estimate of 



age II trout not available. 



