ABSTRACT 



Two summer and two winter seasons of creel census on the section of 

 the Upper Mississippi River, between Red Wing, Minnesota, and Dubuque, Iowa, 

 in 1944-46, showed the catch to be about 0.5 fish per hour, with a wide variety of 

 fish represented, crappies, bluegill walleye, and sauger being predominant. The 

 fishery is important especially to the local fishermen. The fishing success was 

 about the same in the winter as in the summer. Wide fluctuations occurred from 

 one locality to another, and from week to week. Fishing success varied from year 

 to year; it was better in 1948-49 than in 1944-46. The catch per hour was influenced 

 by several factors, such as bait, time of day, day of the week, sex of the fisherman, 

 and probably water temperature (in the summer) and depth of snow cover (in the 

 winter). For most practical purposes, and in the interests of economy of data- 

 gathering, the sample size could be reduced; it is suggested that a census conducted 

 on every fifth day would give results reliable enough for practical management 

 purposes. 



