• • LABORATORY SUPPLY 



---^ HARBOR SURFACE 



150 



:^ 140 



^ 130 



2 120 



^ no 



c^'lOO 



90 



' I I I I I I I I I I I I I I I ' 1 I I I I I I I I I 1 I I I I I I I I 



o . 





Q- 5 - 



'I I II I I IT I I I I 1 I I I I I I I I I I I I I I I I I I I I I I 



JJASONDJFMAMJJASONDJFMAMJJASONDJFMAMJJASO 



1964 



1965 



1966 



1967 



Figure 1. — Moiitlily mi-aus of daily maxiniiim concentration and percentage saturation of dissolved oxy- 

 gen and corresponding mean water temperatures at Boothbay Harbor, Maine, 19frl-67. 



120 



U.S. FISH AND WILDLIFE SERVICE 



