Table 19. --Average water temperature (* F.) by 10- or 11 -day periods in the 

 Chocolay River, Marquette County, Michigan, 1951-60 



[Thetmometer readings were taken at Highway M-28 bridge in Sec. 8, T. 47 N. , R. 24 W. 

 in 1951-54 and at Mangum Bridge, Sec. 24, T. 47 N. , R. 24 W., in 1955-60.] 



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