GREAT LAKES FISHERIES 



SECTIONAL SUAAMARIES 

 SUAAAAARY OF U.S. OPERATING UNITS AND 

 FISHING EFFORT, BY LAKES, 1975 



283 



NOTE: --THE NUMBER OF DAYS INDICATES THAT 

 THE NUMBER OF FISHERMEN AND CRAFT OPERAT I 

 FOLLOWS: REGULAR— MORE THAN 161 DAYS, PA 



FISHING OCCURRED REGARDLESS OF THE AMOUNT OF TIME FISHED DURING A DAY. 

 NG AS REGULAR, PART-TIME, AND CASUAL IS BASED ON DAYS OF OPERATION AS 

 RT -TIME —54 TO 161 DAYS ( I NCLUS I VE ) , AND CASUAL— LESS THAN 54 DAYS. 



