PROPAGATION AND DISTRIBUTION OF FOOD FISHES, 1923. 35 



snowslides diirino; the past winter, when a serious loss of stock was 

 narrowly averted. The floods occurring throughout the Columbia 

 Kiver Basin in January, 1923, caused some further damage to this 

 flume and other property. The new^ hatchery is a frame structure, 

 40 by 140 feet in dimensions, on a cement foundation. It is equipped 

 with 128 hatching troughs, providing holding capacity for upward 

 of 30.000,000 salmon eggs during the incubation period. 



In the fall of 1922 the usual fishing operations were conducted, and 

 14,261,000 eggs were taken between September 22 and October 14, 

 practically all of them being chinook-salmon eggs, though small 

 numbers of chum and sockeye eggs were also acquired. In addition 

 to these collections 5,000,000 surplus chinook-salmon eggs from the 

 Washington State hatchery at Kalama were handled. Excellent re- 

 sults attended the incubation and rearing operations, and the year's 

 output amounted to 16,743,900 eggs and young fish. Of this number 

 12.427,000 were fingerlings from 1| to 3 inches in length. Shipments 

 of eyed eggs were made from tlie Little "\'\niite Salmon hatchery to 

 central station, Washington, D. C, to the State of Oregon, the Uni- 

 Aersity of Washington at Seattle, Wash., to the Netherlands Govern- 

 ment, and to other stations of the local group. 



BIG WHITE SALMON (WASH.) SUBSTATION. 



A considerable amount of work in the line of improvement to 

 property was also accomj)lished at this point. The hatchery build- 

 ing was moved to a more favorable site, remodeled, and thoroughly 

 repaired. As reconstructed it consists of a frame building, 40 by 

 100 feet, on a cement foundation. It is equipped with 83 standard 

 hatching troughs, having a capacity for approximately 20,000,000 

 salmon eggs. 



During the spawning season, extending from September 22 to 

 October 10, 6.237,000 chinook-salmon eggs were obtained from local 

 spawning areas. Five hundred thousand eggs of the silver trout 

 and 235,000 of the brook trout were incubated during the year for 

 the Washington fisheries authorities, and the resulting fry turned 

 back to the State officers for distribution. The total output of young- 

 salmon amounted to 6,000,000 fingerlings, ranging from 2 to 3 inches 

 in length. 



KOGUE RIVER (OREG. ) SUBSTATION. 



, The usual difficulties were encountered in attempting to hold fish- 

 ing appliances in the Rogue River during the freshets resulting from 

 melting snow in the upper reaches, and conditions would not permit 

 of really profitable work in egg collecting until August 9. From 

 that time until the racks were destroyed by spring floods in the 

 following May fishing operations were diligently prosecuted. The 

 i'gg collections, including a small numl)er taken in YAk Creek lielow 

 the dam Avere : 



Number of eggs. 



Cliinook salmon 1,235, 000 



Steelhead 354,700 



Hla<-k-spottea trout 33, 900 



Silver salmon 20, 500 



Total , 1, 644, 000 



