TABLE 3. — Maximum daily counts, salmon 

 and steelhead Rock Island Dam, 1959 



Coho Sa.lniOD., Oncorhynchus kisutch 



(silver) 



The coho salmon count of 118 in 

 1959 was a little better than twice the 

 26-year mean of 57, and is the fifth 

 highest count recorded at Rock Island 

 Dam for this species (table 2). It is the 

 largest count since 1947 when the peak 

 annual count of 229 was attained. Addi- 

 tional data are shown in tables 3 and 

 13. 



TABLE 4-. — Number and percent of chinook salmon counted over each fish ladder. Rock 



Island Dam, 1959 (Jacks not included) 



TABLE 5. — Number and percent of chinook salmon, jacks counted, over each fish ladder. 



Rock Island Dam, 1959 



