﻿GREAT 
  LAKES 
  FISHERIES 
  

  

  SECTIONAL 
  SUMMARIES 
  

  

  SUMMARY 
  OF 
  U.S. 
  OPERATING 
  UNITS 
  AND 
  

  

  FISHING 
  EFFORT, 
  BY 
  LAKES, 
  1970 
  

  

  NOTE:— 
  THE 
  NUMBER 
  OF 
  DAYS 
  INDICATES 
  THAT 
  FISHING 
  OCCURRED 
  REGARDLESS 
  OF 
  THE 
  AMOUNT 
  OF 
  TIME 
  FISHED 
  DURING 
  A 
  DAY. 
  

   THE 
  NUMBER 
  OF 
  FISHERMEN 
  AND 
  CRAFT 
  OPERATING 
  AS 
  REGULAR, 
  PART-TIME, 
  AND 
  CASUAL 
  IS 
  BASED 
  ON 
  DAYS 
  OF 
  OPERATION 
  AS 
  

   FOLLOWS: 
  REGULAR--MORE 
  THAN 
  161 
  DAYS, 
  PART-TIME 
  54 
  TO 
  161 
  DAYS 
  ( 
  INCLUSIVE), 
  AND 
  CASUAL--LESS 
  THAN 
  54 
  DAYS. 
  

  

  