72 



o 

 Monthly and Annual Mean Surface Water Ten^jeratures, F 



o o 



OVERFALLS LIGHTSHIP 38 47.9'N. 75 01.4'W. 



Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec . Ann . 



1905 - - 32.7 A1.6 54.4 65.0 69.2 70.3 69.6 64.2 52.0 44.0 - 



1906 40.8 37.6 39.1 - - 63.4 69.9 73.1 70.9 63.5 51.5 41.8 - 



07 38.3 31.4 - 44.1 51.7 - - - - - - 39.3 - 



08 37.4 32.0 36.1 43.6 53.7 65.6 66.6 70.3 68.0 62.7 50.6 42.8 52.4 



09 38.8 38.7 41.0 ------ ___- 



(4) (4) (4) (3) (3) (3) (3) (3) (3) (3) (3) (4) 

 Mean 38.8 34.9 37.2 43.1 53-3 64.7 68.6 71.2 69.5 63.5 51.4 42.0 53.2 



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

 Source - USBF 



