PROPAGATION AND DISTRIBUTION OF FOOD FISHES, 1922. 63 



located on a tract of land near the confluence of the North Platte 

 River and Lost Creek, in Carbon County, Wyo., adjacent to the 

 Pathfinder Reservoir project of the United States Reclamation 

 Service. In furnishing water for the hatchery a concrete dam across 

 Lost Creek was necessary. 



The distribution from the Saratoga station consisted of 298,500 

 brook trout, 924,740 rainbow trout, and 9,000 Loch Leven trout, with 

 Upward of 1,000,000 fish on hand at the close of the year. 



Egg collections at the main station were confined to 130,000 brook- 

 trout eggs and a small number of Loch Leven trout eggs from 

 the brood stock. The rainbow trout at the field stations gave promise 

 of being unusually successful. Racks for the capture of spawning 

 fish were in place in Sage Creek, Canon Creek, and Lost Creek 

 well in advance of the spawning season, and good numbers of fish 

 were present in each stream. On May 10 a blizzard of intense vio- 

 lence, continuing for five days, visited this section, making all move- 

 ment abroad impossible. The storm was followed immediately by 

 mild weather, and the floods resulting from the rapid melting of the 

 quantities of snow rendered fishing impracticable for a further 

 period. With the abatement of the storm and flood the larger part 

 of the fish had passed upstream. Eggs to the number of 1,355,800 

 were obtained, however. Reserving a liberal number to be incubated 

 at the Lost Creek hatchery for the replenishment of the local streams, 

 the remaining number were divided between the State of W3'^oming 

 and the bureau, the bureau's eggs being forwarded to the Saratoga 

 station. 



SPEARFISII (S. UAK.) STATION. 

 [D. C. Booth, Superintendent.] 



Efforts at this station are confined to the propagation of the 

 brook, rainbow, and Loch Leven trouts. Nearly 600,000 eggs of all 

 species were produced from the station brood stock, and about 350,000 

 brook and rainbow trout eggs were transferred from other stations 

 of the bureau. The percentage of hatch ranged from 52 to 74, and 

 all but about 10,000 of the young fish were distributed throughout 

 the territory ordinarily served. 



Impelled by the difficulties annually experienced in obtaining satis- 

 factory supplies of brook-trout eggs from outside sources, the sta- 

 tion has recently been engaged in the production of a brood stock of 

 this species. As a result there were on hand at the beginning of the 

 fiscal year brood fish of excellent quality in adequate numbers to 

 furnish sufficient eggs for the season's work. Before spawning time 

 arrived, however, a large number of them had disappeared, and there 

 is reason to believe they were stolen, though a night watch had been 

 maintained during most of the year. As a consequence of the greatly 

 reduced eg:g collections, a small number of eggs were taken from the 

 few wild trout obtainable in neighboring streams, and 305,000 were 

 shipped from the Springville (Utah) station. The total supply 

 from these three sources aggregated 738,400, from which 301,500i 

 fingerling fish were distributed, and a smaller number remained on 

 hand at the close of the year. 



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