24. Location of probable walleye spawning sites (s) in the lower 

 YellowstoneRiver 76 



25. Total number of Stizostedion sp. eggs collected at 0.15 m 

 depth intervals on the Intake gravel bar during 1977, 1978 and 

 1979 86 



26. Total number of Stizostedion sp. eggs collected at 10 cm/s 

 water velocity intervals on the Intake gravel bar during 

 spring 1977 , 1978 and 1979 88 



27. Combined amount of top width of four transects downstream froin 

 Intake diversion meeting Stizostedion sp. spawning criteria, 

 at various discharges 91 



28. Number of sauger captured per kilometer while electrof ishing 

 the Tongue River from 12 Mile Dam (km 32) to the mouth, May 9 

 and 10, 1979. Total sample size is in parentheses 93 



VI 



