We developed a simple linear regression model to forecast year-class contributions of lake whitefishCoregonus clupeaformisto the commercial harvest in the Apostle Islands region of Lake Superior. We indexed year-class strength from catches of yearling fish in bottom trawl samples. Recruitment of each year-class was measured by its relative abundance in the fishery at age 6. The relation between recruitment to the commercial fishery and year-class strength indices was positive and significant (r2= 0.67,P 0.01). The model produced reliable estimates of recruitment to the fishery within the range of the regression. Projected recruitment of the 1983#x2013;1987 year-classes to the fishery in 1989-1993 should be sufficient to sustain current levels of harvest through 1993.
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