3, Estimated fishing pressure and yield from approximately 3,100 

 acres of vmter in the associated fisheries, during the period Ilay 20 

 through September 30, 1951, v/as about 2,976 fisherman-days and 1,54S 

 fish weighing 2,155 pounds. The catch was composed of about 78 percent 

 trout, grayling, and vdiitefish, 16 percent pike and yellow perch, and 



6 percent suckers. The average rate of catch vms 0.11 fish per hour or 

 0.16 pounds of fish per hour. 



4, Estimated fishing pressure and yield from the 20-acre Wood Lake, 

 during the period June 24 to July 7, 1951, only, was about 385 fisherman- 

 days, and 494 fish weighing 199 pounds. The catch T;as 100 percent trout. 

 The average rate of catch Tms 0,26 fish per hour or 0.11 pounds of fish 

 per hour, 



5. About 98 percent of the fishermen contacted during the study 

 were residents of Ilontana, 72 percent of v/hom came from Great Falls, 

 Montana, about 50 miles away. All but 7 percent of the fishermen came 

 from within 100 miles of the study area. The importance of the Tri.lder- 

 ness area above Gibson Reservoir to nonlocal people is Indicated. 

 Fifty-five percent of all the nonresidents contacted during the study 

 used this area and, ei:clusive of those who came from more than 300 miles 

 avra.y, 73 percent of the residents who used the area came from more than 

 50 miles away. 



6, Results of the fisherman expenditure study indicated an average 

 per-day expenditure of $6,27, mth a range of «5,91 to $10.70 for various 

 segments of the fishery. The average expenditure per pound of fish varied 

 from v4,12 to $12.26 for the various segments of the fishery and averaged 

 §7.41, The total annual value of the fishery is estimated to be $66,000. 



7. The seasonal rates of catch for the streams were considerably 

 higher than for the reservoirs. With minor exceptions, the rates of 

 catch in numbers and pounds of fish per hour for the water included in 

 the study were lower than rates shovm for many other midwestern streams, 

 lakes, and reservoirs. 



8. A comparison of expenditure infoniation obtained during the 

 Ilorth Fork Sun River study with that obtained on other studies indicated 

 the importance of the radius of influence in determining expenditures and 

 referable values. 



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