66 

 TABLE 30. Comparison of the spring estimates of numbers (N/1000 ft) of age II 

 and older brown trout in the Pipeorgan (8513 ft) and Hildreth 

 (6455 ft) Sections of the Beaverhead River between 1968 and 1976. 

 80% confidence interval in parenthesis. 



Spring 



Brown Trout 

 N/1000 ft 



Pipeorgan 



Hildreth 





1968 

 1970 

 1971 

 1972 

 1974 

 1976 



96 (±23) 



122 (±16) 



138 (±37) 



166 (±21) 



74 (±14) 



171 (±36) 



TABLE 31. Comparison of the fall estimates of numbers (N/1000 ft) of age I 

 brown trout in the Pipeorgan (8513 ft) and Hildreth (6455 ft) 

 Sections of the Beaverhead River between 1967 and 1973. 





Fall 



1967 

 1968 

 1969 

 1970 

 1971 

 1972 

 1973 





