1990 Grayling Spawning Report 



LIST OF TABLES 



Page 



1. Electrof ishing sampling dates, locations, and approxi- 

 mate length of sample sections for electrof ishing 

 sampling of the 1989 spawning Arctic grayling population 



in the Big Hole River 4 



2. Mean length, length range, and sex ratio information by 

 age for the portion of the Big Hole River Arctic grayling 

 spawning run sampled during 1989 9 



3. Summary of tag return information for recaptured Arctic 

 grayling captured during the spring of 1989 13 



4. Average depth (ft.), velocities at 0.6 and 0.1 depth 

 (fps), and surface substrate composition (%) at capture 

 locations of ripe and mature grayling (USED) and at 

 adjacent (AVAIL) areas 15 



Page - vi 



