LIST OF TABLES 



Page 



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 45 



TABLE 11. Estimated biomass (lbs/6455 ft) of brown trout by age 

 groups in the Hildreth Section of the Beaverhead River 

 between 1966 and 1976. 80% confidence interval in 

 parenthesis 46 



TABLE 12. Estimated biomass (lbs/6455 ft) of brown trout in the 

 1965 through 1974 year classes in the Hildreth Section 

 of the Beaverhead River 47 



TABLE 13. Estimated biomass (lbs/6455 ft) of rainbow trout by age 

 groups in the Hildreth Section of the Beaverhead River 

 between 1966 and 1976. 80% confidence interval in 

 parenthesis 48 



TABLE 14. Estimated biomass (lbs/6455) of rainbow trout in the 1965 

 through 1974 year classes in the Hildreth Section of 

 the Beaverhead River 49 



TABLE 15. Annual rates of population change (%) of brown trout 



by age groups in the Hildreth Section of the Beaverhead 



River between 1967 and 1976 49 



TABLE 16. Annual rates of population change (%) of rainbow trout 

 by age groups in the Hildreth Section of the Beaverhead 

 River between 1966 and 1975 50 



TABLE 17. Relationship between tag returns of brown and rainbow 

 trout by anglers and mean April through September flows 

 (cfs) for the Hildreth Section of the Beaverhead River. 

 Number of tag returns in parenthesis 52 



TABLE 18. Mean weights (lbs) by age groups of brown and rainbow 



trout captured by electrofishing in the Hildreth Section 



of the Beaverhead River during the 1966 through 1976 



sampling periods 52 



TABLE 19. Estimated numbers (N/1000 ft) and biomass (lbs/1000 



ft) of brown trout by age groups in nine sections of the 



Beaverhead River during Spring, 1975 and 1976. 80% 



confidence interval in parenthesis 81 



