bbLiiiidLes ul LrouL bioiiidss i ctnyed between IJ lbi,/l,uOO IL iii bt-veiiiiiilt 

 and American Creeks and 45 lbs/1,000 ft in Willow Creek. Brook trout 

 standing crops varied between 13 lbs/1,000 ft in Sevenmile and Sixmile 

 Creeks and 41 lbs/ 1,000 ft in Seymour Creek. Brook trout biomass accounted 

 for the vast majority of the standing crop in each study section. 



Estimates given in Appendix Table 3 were calculated on the basis of 

 length groups. The length groups are arrived at by lumping 1/2 inch groups 

 with similar recapture efficiencies. Another way to look at the size 

 distribution of the brook trout population is in terms of the numbers 

 and percent contribution of catchable fish (6 inches and larger) within 

 the population (Table 6). Numbers of catchable fish ranged between lows 

 of 37 and 38 per 1,000 ft in Sixmile and American Creeks to a high of 173 per 

 1,000 ft in Seymour Creek and averaged 88 per 1,000 ft per stream. Percent 

 contribution of catchable fish to total brook trout populations varied 

 between 9 percent in Sixmile Creek and 63 percent in Deep Creek and 

 averaged 32 percent for all of the study sections. The number of catchable 

 cutthroat trout was estimated at 48 fish/1,000 ft and comprised 76 percent 

 of the population in Willow Creek. Estimated numbers of catchable rainbow 

 trout comprised 47 to 100 percent of the populations in American, California 

 and Deep Creeks and only 15 percent of the population in Sixmile Creek. 



Table 6. Estimated numbers and percentages of catchable fish (6 inches and 

 larger) within the brook trout populations of Mount Haggin stream 

 study sections. 



Percentage of 

 Number* Total Population 



Seymour Creek 

 Sullivan Creek 

 Twelvemile Creek 

 Slaughterhouse Creek 

 Teninile Creek 

 Sevenmile Creek 

 Deep Crppk 

 bixmi I p Creek 

 Oregon Creek 

 American Creek 

 California Creek 

 Willow Creek 



''Number per 1 ,000 ft. 



19 - 



