Ward. — Migration of the Sockeye Salmon 403 



with the main body of the lake. At the time of our visit the 

 current in the outlet was gentle, so that the mingling of the 

 waters with the lake waters must have been very gradual, and 

 this could be followed by the eye since the creek carried clear 

 water whereas the lake waters were milky. No evidence was 

 found at this time that any fish were entering the creek from 

 the lake or were waiting around the mouth of the creek. 



At this time the temperatures taken were as follows : In 

 the lake 100 yards from shore and an equal distance below 

 the mouth of the creek, 49.5° F. ; 100 yards above the mouth 

 of the creek, 48.5°; in the creek 250 yards from the mouth, 

 47° F. 



On the following day we went to the head of Lake Klutina 

 and did not return until August 19. On that date a trip up 

 Saint Anne Creek a distance of two miles showed that the 

 spawning fish which had been abundant in the bends eight 

 days before had almost entirely disappeared. Only a very 

 few spent fish were still alive. Furthermore, the dead fish 

 which were on hand in large numbers on the shallows had 

 been eaten on the spot or dragged away, so that only scant 

 traces were left of the very considerable numbers conspicuous 

 at the previous visit, and the visible remains were mostly skele- 

 tons picked clean. It would have been difficult for anyone who 

 visited the creek on August 19 to have made any accurate esti- 

 mate of the actual number of fish which were spawning there 

 only a few days before. Fish were still passing up the lake 

 in large numbers, and apparently going by the mouth of 

 this creek. There was no evidence that any had entered the 

 creek recently or were inclined to consider using the stream 

 as a spawning ground. 



This instance indicates very clearly that a single visit to 

 a stream, unless it occurs at a time that is distinctly favorable, 

 may give a false impression concerning the utilization of the 

 stream for spawning purposes or the size of the run that 

 visits this particular spawning ground. It will be noted that 

 during the time between our visits the volume of the outflow 



