Ill 



o 

 Monthly and Annual Mean Surface Water Temperatures, F 



(7) (6) (6) (6) (6) (7) (7) (7) (8) (6) (6) (6) 

 Mean 53.6 53.9 56.5 61.5 72.7 78.9 82.2 83.5 80.7 72.1; 65.9 57.2 68.5 



Readings at 0130, 0730, 1330 and 1930 EST. 

 Source - NWRC 



