240-1 



200- 



BIOMASS (LBS) 

 NUMBERS 



/ 

 / 



o 

 o 

 o 



< 

 g 



CO 



3 

 O 

 cr 



/ 



/ 



/ 



/ 



/ 



160- 



120- 



80- 



40- 



/ 



/ 



/ 



/ 



/ 



/ 



/ 





/ 



/^ 



r600 



hSOO H- 



ll. 

 o 



o 

 o 



■400 q: 

 tlJ 



cr 



UJ 



•300 CO 



■200 g 



-100 



100 200 300 400 500 

 MIN. SUMMER FLOW (CFS) 



Figure 19. Relationship between the minimum summer flow (cfs) 

 and the estimated numbers and biomass (lbs ) of 

 age 11+ and older trout in Sections 1, II and III 

 of reach #2 of the Gallatin River in September 

 1976 and 1977. 



42 



