CONTENTS 



Page 



Introduction 1 



Vessel, gear, and methods , 2 



Fishing effort 4 



Species composition of the trawl catch 7 



Discussion by district 8 



District I - Michigan waters from Sault Ste. Marie to 



Crisp Point Light 8 



District II - Michigan waters from Crisp Point Light to 



the outlet of Beaver Lake 9 



District III - Michigan waters from the outlet of Beaver 



Lake to Salmon- Trout Point 9 



District IV - Michigan waters from Salmon- Trout Point 



to the Elm River 9 



District V - Michigan waters from the Elm River to the 



Montreal River 9 



District VI - Wisconsin waters 10 



District VII - Minnesota waters from Duluth to the 



Encampment River 11 



Discussion by species 11 



Chubs 11 



Smelt 12 



Suckers . . , 13 



Lake trout 13 



Whitefish 15 



Alewife 15 



Lake herring 15 



Miscellaneous species 15 



Conclusions 16 



Literature cited 16 



Appendix 16 



Cover photo: Retrieving trawl aboard the R/V Kaho during exploratory 

 fishing in Keweenaw Bay of Lake Superior, August 1964. 



