Nonresident parties constituted only 3 percent of the total number. 



The three principal species in the catch in order of abundance were 

 yellow perch, goldeye, and sauger. These fishes constituted about 90 percent of 

 the catch. Rainbow and brown trout and channel catfish were among the other 

 species taken. 



Type and period of coverage: Intensive checks in vicinity of dam, 

 May h through September Ik, 19U8, June 2 through September lU, 19b9> and April 1$ 

 through September lh y 19!>0. Limited checks in vicinity of dam, during spring, 

 winter, and fall of 19U9 and 1950. Limited checks of outlying portion of reser- 

 voir during summer period all three years. 



Period of estimates: Estimates of use and yield for entire year, in 

 each year. 



Expenditures for equipment and annual items: Obtained in field in 

 19lj8 and 19li9, applied from special survey of fishermen from adjacent Valley 

 and Roosevelt Counties (7) in 19$0. 



Other expenditure items: Obtained in summer periods only, but applied 

 throughout respective years. 



Split Rock Lakes, Montana (17), are a chain of weedy ponds, totaling 

 about 120 acres, on the Sun River Irrigation Project on the eastern slope of 

 the northern Rocky Mountains. These ponds are fed by seepage water from an 

 irrigation canal. Access to the area is moderately good in dry weather. 



Northern pike comprised 96 percent of the catch. Yellow perch and 

 largemouth bass also were taken. 



Type and period of coverage: Checked on alternate week basis, May 20 

 through September 30, 19^1. 



