300-1 



100 — 



50- 



10- 



Glendive o 



Intake 



So 



■¥*■ 



tt 1 



In y = 0.146 + 3.314x 

 r = 0.906 



In v = -5.909 + 4.470x 

 r = 0.716 



r ^ i ^ 



0.5 1.0 1.5 



Current Velocity (ft/sec) 



2.0 



2.5 



3.0 



Figure 55. Distribution of Hydropsyche larvae at various currents 

 during October 1 975. 



92 



