658 U. S. BUREAU OF FISHERIES 



hatchery were liberated in the hike, and yearly plants on the same scale have 

 been introduced since that time. In the expectation that adult salmon resulting 

 from tiie initial year's plant would return to the river in 1930, a close watch was 

 maintained throughout the summer but no migration whatever could be dis- 

 covered. After due consideration it was decided to continue the experiment 

 through another year and to conduct at the same time a thorough investigation 

 with the view of bringing to light any possible migration from the lake. Accord- 

 ingly, a consignment of 1,004,800 e}'ed eggs from the Quinault (Wash.) station 

 was developed in the Lake Crescent hatchery and on June 29 the 995,023 No. VA 

 fingerlings resulting therefrom were planted in the lake. On May 4 an employee 

 was a.ssigned to make close observations in the lake and river and to ascertain if 

 there would be a migration out of the lake of the young fish liberated therein in 

 June, 1930. A migration was noted between May 11 and June 15; but it was 

 also discovered that man\^ of the young fish composing it were killed or injured in 

 the river, apparently in passing through the numerous log jams and rock slides 

 encountered. Again, a close watch was maintained to note if any adult sockeye 

 salmon entered the river, but there appeared to be no evidence of such a return. 



QUIN.\ULT (WASH.) ST.\TIOX 

 [Marcu.s S. Meyer, Superintendent] 



During the fall spawning season, extending from October 22 to the end of 

 December, 20,000,000 sockeye salmon eggs were taken and laid down for incuba- 

 tion in the hatchery, together with 2,700,000 silver salmon and 140,000 chinook 

 salmon eggs. On reaching the eyed stage 5,361,984 eggs of this stock were for- 

 warded to other stations of the bureau and to State hatcheries in Oregon and 

 Washington. At the close of the fiscal year approximately 1,400,000 fingerling 

 salmon were being reared for later distribution, the remainder of the production 

 having been disposed of earlier in the season to make room for the growing stock. 

 Besides caring for the eggs and fry derived from contiguous waters, the station's 

 facilities were utilized for incubating nearly a half-million steelhead and black- 

 spotted trout eggs for the Grays Harbor County game commission. After 

 rearing to fingerlings the fry resulting from these eggs, they were turned over to 

 employees of the game organization and distributed in county streams. With 

 the object of increasing the station's rearing facilities, the construction of a 

 self-cleaning elliptical long concrete rearing pond 20 by 80 feet in dimensions 

 was undertaken and partialh' completed. It is the intention to utilize waste 

 water from the six concrete rearing ponds now in use for the operation of the new 

 pond. A concrete settling tank with necessary connections for 18-inch wood 

 stave pipe was constructed and will be installed in advance cf the coming spawn- 

 ing season. 



CLACKAMAS (OREG.) STATION AND SUBSTATIONS 

 [Philo B. Hawley, Superintendent] 



With the Clackamas station as headquarters, fish-cultural activities were 

 conducted during the fiscal year 1931 at eight points in the States of Oregon, 

 Washington, and Idaho. Six of these stations were maintained throughout the 

 year, while two were utilized simply as egg-collecting units. 



The aggregate egg collections of the group amounted to 51,398,000 or 28,898,000 

 in excess of last year's collections. Of this total 47,985,000 were from chinook 

 salmon; the remainder were from silver, chum, and steelhead salmon and rain- 

 bow trout. 



The station received the cooperation of the fish and game commissions of 

 Oregon, such cooperation including financial assistance as well as aid in efi"ecting 

 transfers of fi.'h and eggs and prevention of salmon poaching. 



Clackamas (Oreg.) station. — Repeated failures of anticipated runs of fall 

 chinook salmon to appear in the Clackamas River liave justified the practice of 

 making no attempt to intercept the small number of ascending fish. For the 

 purpose of assisting to build up the run, the fingerlings resulting from 750,000 

 eggs transferred from the Little White Salmon station were liberated in the river. 

 In addition to these, 1,003,000 spring chinook .salmon eggs were received from the 

 McKenzie River station cf the Oregon Fish Commission. Chinook eggs num- 

 bering 2,025,000, collected at the Upper Clackamas station, were incubated at 

 Clackamas, and the resulting fish in the fingerling .stage were liberated in the 

 Upper Clackamas River and its tributaries. Shipments of brook and rainbow 

 trout and of silver and chum salmon were handled, and various applications for 



