GRAYLING SPAWNING REPORT 



STUDY SITE DESCRIPTION 



The study area included the upper Big Hole River drainage 

 above Divide, Montana (Figure 1). Sampling was concentrated 

 within tha main stem Big Hole River between the towns of Wise 

 River and Jackson and m the lower portions of its tributaries 

 including the North Fork Big Hole River, Big Lake Creek, Deep 

 Creek, Fishtrap Creek, Governor Creek, F:Qck Creek, Sandhollow 

 Creek, Seymour Creek, Steel Creek, Swamp Creek, and Warm Springs 

 Creek. During sampling. Big Hole River flows and water tempera- 

 tures rangec fro.n 618 to 3320 cfs and 33 to 75 F, respectively, 

 using preliminary data supplied by the USGS from a gauge located 

 at the Highway 43 bridge near Wisdom (Figure 2). 



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