Expenditures for equipment and annual items: Applied from other 

 studies (1, 3, 8). 



Other expenditure items: Applied to above period. 



Cottonwood Lake, South Dakota (12), is an enlarged natural lake in the 

 southeastern part of the State. The lake has a surface area of 1,1*50 acres and 

 a maximum depth of 10 feet. It is fed from Medicine Creek and local drainage. 

 Fluctuation normally is limited, and aquatic vegetation, principally sago pond- 

 weed, is common. Access is excellent, and there are roads around most of the lake. 



Fishermen were mainly local residents, most of whom came from within a 

 radius of 50 miles. Nonresidents comprised only 2.5 percent of the total number. 

 Yellow perch, black bullhead, and yellow pikeperch in that order made up 99 per- 

 cent of the catch. Largemouth bass and green sunfish also were taken. 



Type and period of coverage: Periodic checks (19), May 1 through 

 September 21, 1952. Limited checks in fall and winter. 



Period of estimates: Estimates of use and yield included in this 

 paper for period May 1 through September 21 only* 



Expenditures for equipment and annual items: Applied from other 

 studies (1, 3, 7, 9). 



Other expenditure items: Applied to above period. 



Harry Strunk Lake , Nebraska (16), is a multiple-purpose reservoir con- 

 structed in 19h9 on Medicine Creek near the town of Cambridge in the south- 

 central part of Nebraska. The impoundment was opened to fishing on April 1, 1952. 

 It has a surface area of 1,76Q acres. Maximum depth of the reservoir is about 

 6I4 feet. Fluctuation was negligible during the period of study. The reservoir 

 is approached by county roads from many directions. 



