91 



o 

 Monthly and Annual Mean Surface Water Temperatures, F 



NORFOLK, VIRGINIA 36°5l«N. 76°18»W, 



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



1873 -------- 7I4.9 63.2 a9.3 U5.9 - 



7I; U3.3 Uli.9 50.3 55.3 66.1^ 80.3 80.3 79.1 76.5 66.5 - - (61.3) 

 1875 38.2 -------- -_._ 



Elizabeth River at Boston Steamship Co. wharf, 



1873-Oct. 1879, incl., readings at 3 p.m. 

 Nov. 1879-June 1881, incl,, readings at 1 p.m. 

 July 1881, etc., readings at 2 p.m. 



Source - OSCFF 



