HAMILTON 





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It appears that water tem- 

 peratures at the Hamilton 

 station makes this hatchery the 

 one most suited to holding 

 golden trout brood stock. A 

 brood stock has been developed 

 at this station from eggs ob- 

 tained from high mountain 

 lakes near West Yellowstone. 

 It is anticipated that the first 

 eggs may be obtained from 

 these fish in 1955. Eggs so ob- 

 tained will be used for planting 

 suitable high mountain lakes. 



The Hamilton hatchery is a cold water station and is well 

 suited for hatching" eggs of fall spawning fish, such as the sock- 

 eye salmon. When these eggs are hatched at warm water stations, 

 they are ready for planting too early in the year when lakes are still 

 ice covered. Hatched at the Hamilton station, these fish are available 

 for planting after the ice cover has gone from the lakes and when 

 conditions are most suitable for survival of the planted fish. 



Rearrangement of water supply pipes, construction of fish 

 rearing tanks in the hatchery, and repair of sewage disposal facilities 

 were carried out during the biennium together with necessary 

 maintenance. 



FISH PLANTED FROM HAMILTON HATCHERY 



May 1, 1952 to April 30, 1953 



May 1, 1953 to April 30. 1954 



Species — 



Rainbow 



Cutthroat 



Brown 



Number Size Weight Species — 



Number Size Weight 



16,200 



4,800 



8,488 



10,400 



187,620 



30,900 



27,600 



38,400 



9,600 



31/2 



4 



tt 



t 



1 



11/2 



3 



1 



11/2 



270 



100 



2 



3.3 

 62.7 

 13.5 

 290 

 12 

 5 



TOTAL - - - 333,968 758.5 TOTAL - - 



Symbols Indicate: 'Legal. * "Adult. iFry. ttEyed Eggs. 



— 88 — 



269,506 



25 

 290 

 140 

 600 



33 

 430 

 485 



33 



42.5 



2,078.5 



