LIST OF FIGURES 



Number 



1 



Map of the upper Big Hole River drainage, showing 

 sample sections where electrof ishing surveys 

 were conducted 



3 



4 

 5 

 6 



7 



Mean length of young-of-the-year Arctic grayling, 

 mountain whitefish, and brook trout versus date . 



Depth (ft) isopleths for macrohabitat area 1. 



Depth (ft) isopleths for macrohabitat area 2a 



Depth (ft) isopleths for macrohabitat area 2b 



Depth (ft) isopleths for macrohabitat area 3. 



Depth (ft) isopleths for macrohabitat area 4. 



8 A Freguency of depth measurements in macrohabitat 

 areas 

 B Freguency of depth measurements at capture sites, 



Page 



7 



16 

 19 

 20 

 21 

 22 

 23 



27 



9 A Frequency of velocities for macrohabitat areas 



B Frequency of velocities at capture sites 28 



10 Gauge height (ft) versus streamflow discharge (CFS) 



for the west channel of the Big Hole River 32 



11 Gauge height (ft) versus streamflow discharge (CFS) 

 for the east channel of the Big Hole River upstream 



of the mouth of Steel Creek 3 3 



12 Gauge height (ft) versus streamflow discharge (CFS) 

 for the east channel of the Big Hole River 

 downstream of the mouth of Steel Creek 34 



13 Gauge height (ft) versus streamflow discharge (CFS) 



for Swamp Creek 3 5 



14 Percent volume of stomach contents of 6 to 10 inch 

 Arctic grayling and brook trout made up by various 



food items 3 6 



15 Percent volume of stomach contents of 10 inch and 

 larger Arctic grayling and brook trout made up by 

 various food items 37 



111 



