52 



Monthly and Annual Mean Surface Water Temperatures, °F 



N.B. Data up to June, 1903, looks unusually good in the original. 



From Jiine, 1903, on the readings appear to be consistently too low, 

 possibly because of broken mercury column. 

 * Incomplete obs. 



Readings at first high water and first low water after 7 a.m. 

 Source - USCFF 



