LIST OF TABLES 



TABLE 28. Estimated numbers (N/IOOO ft) and biomass (lbs/1000 



ft) of rainbow trout by age groups in the Wheat Section 

 (9908 ft) of the Beaverhead River between 1968 and 

 1976. 80% confidence interval in parenthesis .... 



TABLE 29. Estimated numbers (N/1000 ft) and biomass (lbs/1000 ft) 

 of brown trout by age groups in the Blaine Section 

 (17837 ft) of the Beaverhead River between 1971 and 

 1976. Rainbow trout were too scarce to estimate. 80% 

 confidence interval in parenthesis 



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 



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 



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66 



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TABLE 32. Mean values of hydraulic characteristics at various 

 flows (cfs) in percent of the mean values at 1000 cfs 

 for pools, runs, and riffles in the Hildreth Section 

 of the Beaverhead River 86 



TABLE 33. Approximate flows (cfs) at which various hydraulic 



characteristics are reduced by 50% in relation to the 



mean values at 1000 cfs in pools, runs, and riffles 



in a series of study sections in the Beaverhead 



River 87 



TABLE 34. Numbers of brown and rainbow trout > 5.0 lbs captured 

 by electrofishing in the Hildreth Section (6455 ft) of 

 the Beaverhead River between 1966 and 1976 70 



TABLE 35. Distribution of the average daily flows between 



successive fall and spring estimates of trout populations 



in the Hildreth Section of the Beaverhead River ... 88 



