Tatle 1. — Annual coiints and periods of counting of salmon and steelhead 

 trout at Rock Island Dam, 1933-65=/ 



1/ Coxmts axe now considered to be the official record of fish passing 

 Rock Island Dam. 



Table 2. — Monthly number of salmon and steelhead counted at 

 Rock Island Dam, 1965 



^ October 1-15. 



