.•'ISHERIES MANAGEMENT 



The loss of fish habitat through stream alteration, 

 competition for water, siltation and other forms of pollu- 

 tion still remains the major concern of fisheries biologists. 



Research dividends were realized on the Madison River 

 where survival of wild trout was improved because of better 

 water flows in the river. The improved flows were due to 

 regulated releases of water from Hebgen Reservoir by the 

 Montana Power Company. 



Tagging programs have disclosed that paddlefish which 

 provide good fishing at Intake on the Yellowstone, are migrants 

 from Garrison Reservoir in North Dakota. Tagged fish were 

 also recovered from dredge cuts in the Missouri below Fort 

 Peck Reservoir. 



Regulations were established in 1970 which allowed 

 winter spearfishing for pike, walleye, sauger and rough fish 

 in some areas. Spearing proved to be very popular with 

 Montanans . 



Research on Flathead Lake showed that annual fluctua- 

 tions of climate and, in turn, water temperatures have a 

 considerable effect on the patterns of kokanee distribution. 

 This knowledge can increase the success of sports fishermen. 



A book describing Montana fishes, which has been in 

 production stages for several years, was submitted to 

 printers and should soon be available to the public. This 

 very complete description of Montana fishes involves 52 

 native species and 28 introduced species. It is a cooperative 

 project of Dr. C. J. D. Brown, M.S.U., the Agricultural Experiment 

 Station and the Montana Fish and Game Department. 



