348 U. S. BUREAU OF FISHERIES 



In the absence of the counting weir, no steelhead-salmon eggs were collected 

 during the spring, and work with that species was confined to the incubation 

 of 250,000 eyed eggs transferred from the Applegate Creek substation, the 

 product of which was on hand at the close of June. Small numbers of eggs 

 of the silver and Chinook salmon, taken in connection with the sockeye-salnion 

 collections, were incubated and the fry reared to the fingerling stage before 

 planting. The silver trout resulting from a consignment of eggs donated by the 

 State of Washington in the previous fiscal year were distributed as yearlings. 

 Before liberating them the right ventral and adipose fins were removed, the 

 object in marking them being to determine if they would eventually return 

 from salt water as larger sized fish than those that have passed their entire 

 existence in fresh waters. 



Clackamas (Oreo.) Station and Substations 

 [Philo B. Hawley, Superintendent] 



Grouped under this head are the main station at Clackamas and its seven 

 auxiliaries situated in Oregon, Washington, and Idaho, five of them being in 

 operation throughout the year. Fish-cultural work consisted in the propaga- 

 tion of the chinook, silver, and steelhead salmons, approximately 07,000,000 

 eggs of which species were collected, or about 10,000,000 in excess of last 

 year's total. In the course of the year the Oregon Fish and Game Commission 

 rendered valuable aid not only in furnishing eggs for incubation but in giving 

 financial assistance, thus enabling the bureau to carry out its program of pro- 

 ducing a large number of fingerling fish for distribution. 



Clackamas (Oreg.) station. — The year's fish-cultural activities at this point 

 were initiated in August by the erection of a head rack across the Clacka- 

 mas River. Owing to abnormally low water stages very disappointing results 

 were attained in fishing for chinook salmon (conducted from September 27 to 

 October 26), and the total number of eggs collected amounted to only 1,701,- 

 000, showing a shortage of about 50 per cent, as compared with the work of 

 last year. All eggs were of good quality, however, and the loss during incuba- 

 tion was merely nominal. In the course of the year small numbers of eyed 

 eggs of the brook trout and rainbow trout were received and incubated, and 

 from tfie steelhead eggs received from auxiliaries of the Clackamas station 

 two shipments, in the eyed stage, were forwarded to foreign countries — one 

 to Columbia and one to Italy. 



Upper Clackamas (Oreg.) substation. — Fishing for chinook salmon was in 

 progress from August 28 to September 19, and during this time 1,721,500 eggs 

 were secured. As no facilities for the rearing of young salmon are available 

 at this substation, the entire collection was transferred in the eyed stage to 

 the Clackamas station, and the substation was closed for the season. 



Little White Salmon (Wash.) substation, — The stock of young brook trout 

 and steelhead salmon on hand at the beginning of the year (about 166.000) 

 was held for a time and then distributed to applicants or planted in suitable 

 public waters. In August racks and traps were built in the Little White Salmon 

 Iiiver. By September 14 chinook salmon began to appear, and on August 20 

 spawning operations were undertaken and conducted continuously to October 

 7. Eggs to the number of 29.484,000 were secured, and many millions more 

 might have been taken had enough hatching room been available. Of these 

 eggs 10,890,000 were shipped in the eyed stage, part of them to the Oregon 

 Fish and Game Commission and the remainder to other hatcheries of the 

 bureau. In the course of the year this substation received 105.000 brook- 

 trout eggs from the Clackamas station and 50.000 steelhead eggs from the 

 Applegate Creek substation. The resulting fry were distributed to applicants 

 of the region. 



Big White Salmon (Wash.) substation. — Work at this point was wholly on 

 the propagation of chinook-salmon eggs, supplies of which are obtained from the 

 Big White Salmon River and Spring Creek. Traps were erected in each of 

 these streams early in September, and by September 10 a few brood fish had 

 entered the Spring Creek ladder. Active spawning operations were under- 

 taken on September 19, and between that date and October 9, 12.259,000 eggs 

 were collected, of which about 7.000,000 were derived from Spring Creek. An 

 important feature of the work on Spring Creek is that until within a very few 

 years ago the run of chinook salmon in this stream was negligible. On reach- 

 ing the eyed stage, 1,500,000 of the eggs were transferred to the Oregon Fish 



