Table 1. — Spring and summer chincok salmon counted during stream surveys 

 and at Rock Island Dam, 1954-60 



Race and area 



Number of fish''- 



1954-^ 



1955 



1956-" 



1957 



1958 



1959 



1960 



SPRING CHINOOK SALMON 



Counts above Roclsy Reach Dam. 



Counts below Rocky Reach Dam 



(Wenatchee River system) . . . 



Total survey count 



Percentage above Rocky Reach Dam. 



Counts at Rock Island Dam 



Estimated number passing Ptocky 

 Reach ( rounded) 



SUMMER CHINOOK SALMON 



Counts above Rocky Reach Dam. 



Counts below Rocky Reach Dam 



(Wenatchee River system) . . . 



Counts at Rock Island Dam 



Estimated number passing Rocky 

 Reach ( rounded) 



1,328 



693 



2,021 



65.7 



13,742 



9,028 



Total survey count 



Percentage above Ptocky Reach Dam. . . . 



16,985 



1,019 

 400 

 1,419 

 71.8 

 3,944 

 2,832 



129 

 2,095 

 2,224 



5.8 



21,714 



1,259 



1,170 



334 



1,504 



77.8 



539 



2,147 



2,686 



20.1 



3,097 



1,659 



4,743 



65.3 



16,631 



10,900 



1,807 

 7,409 

 9,216 

 19.6 

 29,914 

 5,900 



1,503 

 636 

 2,139 

 70.3 

 7,334 

 5,200 



1,582 

 1,950 

 3,532 

 44.8 

 21,610 

 9,700 



2,156 



646 



2,802 



77.0 



7,528 



5,800 



737 



1,607 



2,344 



31.4 



13,130 



4,100 



1,573 

 1,019 

 2,592 

 60,7 

 7,774 

 4,700 



838 

 1,683 

 2,521 



33.2 



12,293 



4,100 



•"■ The spawning counts include estimates for the Okanogan, Similkameen, and Entiat flivers when 

 only redds were counted during aerial surveys. Estimates are based on 3.6 fish per redd. 



^ Summer Chinook salmon survey counts were not obtained in 1954. 



^ Overlap of runs precluded separation of spring and summer Chinook salmon at Rock Island Dam 

 and separate counts of the two races were not obtained. 



Table 2. — Sockeye salmon counted at Rock Island and Tumwater Dams, and estimates of fish 



passing Rocky Reach, 1954-60 



Area 



Sockeye salmon counts 



1954 



1955 



1956 



1957 



1958 



1959 1960 



Rock Island Dam 



Tumwater Dam (Wenatchee River system) •*•.. 

 Percentage attributed above Rocky 



Reach 



Estimated number passing Rocky Reach 



( rovmded) 



91,234 



26,150 



71.3 

 65,100 



155,055 

 51,820 



66.6 



103,200 



92,443 

 25,518 



72.4 



67,000 



71,261 

 28,231 



60.4 



43,000 



98,695 

 34,000 



65.6 



64,700 



72,351 

 13,005 



82.0 



59,000 



60,341 

 30,900 



48.8 



29,000 



^ No Tumwater Dam counts in 1958 and 1960. Estimates are based on White and Little Wenatchee 

 River weir counts and spawning surveys. 



