FISHERY BULLETIN: VOL. 71, NO. 3 



Table 1. — Sockeye salmon spawning in Karluk River below Karluk Lake in certain years from 1917 to 1932 (from 



Rounsefell, 1953). 



' Considerable numbers not yet ascended when weir removed on Oct. 14. 

  Weir removed Oct. 9 witli a few sockeye still in lagoon and river very low. 

 5 Weir removed Oct. 8 with a few sockeye still in lagoon. 



and fingeiiings. Chamberlain (1907) said 

 Cloudesly Rutter had recorded that throughout 

 May and June 1'903 the sloughs of the upper 

 part of the Karluk River contained many sock- 

 eye salmon fry or small fingerlings. 



The upstream movement of the fry in the 

 Karluk River w^as observed by Walker in 1950 

 and is reported as follows in his manuscript 

 (Walker, 1954a)": 



In the Karluk River the fry were engaged in an up- 

 stream movement along both river banks. They were 

 temporarily halted by the adult counting weir. Passage 

 through the weir was difficult under certain flow condi- 

 tions. On occasion fry removed above the weir appeared 

 to have bruised bodies and broken skin. [Italics ours.] 

 At such a time the fry were extremely scarce above the 

 weir and could not be taken in sufficient numbers to 

 allow a size comparison between those above and below. 



[Walker, page 14, paragraph 4, and page 15, paragraph 



1.] 



In 1951, the following observation was made by 

 Walker: 



Two fry migrations into Karluk Lake were witnessed. 

 The one which appeared to be of greater magnitude 



'Walker, C.E. 1954a. 

 1953. Unpubl. manuscr. 

 Seattle, W A 98195. 



Karluk young fish study, 1950- 

 Univ. Wash., Fish. Res. Inst., 



was that in the Karluk River. More fry were seen there 

 than in all the other areas combined. They were engaged 

 in an upstream movement along both river banks. 

 These fish were, on the average, three millimetres longer 

 and had heavier bodies than those seen elsewhere. The 

 second migration was from Thumb to Karluk Lake. 

 [Walker, page 25, paragraph 2.] 



In the Karluk River the fry reappeared in numbers 

 at the weir in the latter part of July. They became very 

 abundant in August, then decreased in September and 

 were absent in October. In this second upstream migra- 

 tion they were larger by an average of 20 mm. + , and 

 like their predecessors they followed the river banks. . . . 

 [Walker, page 41, paragraph 4.] 



Fry moved up the Karluk River in two peaks, the 

 first through May and the early part of June, and the 

 second from the latter part of July to the end of August. 

 The first migration was of 28 mm. (average) fish and the 

 second of 46 mm. fish. It is believed that these fish are 

 the progeny of the river spawners, and that upon emer- 

 gence part of the group move lakeward immediately 

 while the remainder stay in the river, probably in the 

 slow weedy part by Barnaby Ridge, until the later date 

 (Table 8). As in 1950, a check was put down on some 

 of the scales of the late-running fry. [Walker, page 45, 

 paragraph 2.] 



And in 1952, 



The Karluk fry migration again appeared in two 

 peaks, the first which was composed of 28-mm fish was 

 in May and early June, and the second which was 

 made up of 47-48 mm was in late July and well into 

 September .... [Walker, page 56, paragraph 2.] 



634 



