52 U. S. COAST AND GEODETIC SURVEY 



Table 5. — Monthly extreme high water above sea-level datum, Boston Navy Yard 



J 848: 



Jan. 9 



Feb. 5 



Mar. 10 



Apr. 6 



May 3 



Junes 



July 3 



Aug. 17 



Sept. 15 



Oct. 14, 15... 

 Nov. 12, 13.. 

 Dec. 10 



Highest.. 

 Average., 



Jan. 10 



Feb. 7 



Mar. 28 



Apr. 25 



May 23 



June 20 



July 21,22.. 

 Aug. 17, 18.. 

 Sept. 16, 30. 



Oct. 7 



Nov. 30 



Dec. 31 



Highest. 

 Average. 



1850: 

 Jan. 27, 28.. 



Feb. 25 



Mar. 1 



Apr. 14 



May 25 



June 13 



July 9 



Aug. 8, 10... 



Sept. 8 



Oct. 6 



Nov. 21 



Dec. 23 



7.6 

 7.1 

 7.0 

 6.1 

 6.4 

 7.3 

 7.1 

 6.9 

 6.4 

 7.7 

 6.9 

 7.8 



7.8 

 7.0: 



Height 



1852: 



Jan. 6 



Feb. 6, 7 



Mar. 6, 18 



Apr. 6 



May 2 



June 2 



July 29 



Aug. 18 



Sept. 16 



Oct. 15 



Nov. 12 



Dec. 11 



Highest... 



Average... 

 1853: 



Jan. 4 



Feb. 23. J 



Mar. 27 1 



Apr. 26 



May 24 ' 



June 23 



July 20 



Aug. 18, 20. ..j 



Sept. 15 I 



Oct. 5 



Nov. 30 



Dec. 29 



Highest-. - 

 Average...! 

 1854: f 



Jan. 1 



Feb. 26 



Mar. 31 



Apr. 18 i 



May 15 



June 13 



July 10 



Aug. 8 



Sept. 6 



Oct. 25 



Nov. 22 



Dec. 3 ! 



Highest-.. 



Average...! 

 1855: 



Jan. 19 



Feb. 16 



Mar. 20. 



Apr. 18 



May 9 -. 



June 3 .- 



July 29 I 



Aug. 29 ' 



Sept. 25, 27... 



Oct. 24 i 



Nov. 23 i 



Dec. 9 I 



Highest !' 



Average ' 



1856: 1= 



Jan. 6-.. ! 



Feb. 8 i 



Mar. 6, 7, 8. 



Apr. 7 



May 6 



June 4 



July 20 



Aug. 16 



Sept. 16 



Oct. 15 



Nov. 12, 13. 

 Dec. 14 



Feet 

 6.7 

 6.7 



8.1 

 7.08 



Highest.. 

 Average. 



6.7 

 6.9 

 7.4 

 7.3 



8.9 

 7.12 



8.1 

 7.9 

 7.0 

 6.6 

 6.8 

 6.4 

 7.4 

 7.0 

 7.3 



8.1 

 7.02 



8.2 

 6.9 

 6.7 

 7.1 

 6.7 

 6.6 



6.9 

 6.6 

 6.8 

 7.0 

 8.2 

 6.93 



Height 



1862: 



Jan. 1 



Feb. 20 



Mar. 16 



Apr. 14 



May 13 



June 12 , 



July 9 



Aug. 9 



Sept. 25 



Oct. 27 



Nov. 7, 21, 22. 

 Dec. 23 



Highest.. 

 Average. 



Jan. 21.. 

 Feb. 19.. 

 Mar. 8.- 

 Apr. 5.. 

 May 6.. 

 June 2.. 

 July 1... 

 Aug. 28. 

 Sept. 25. 

 Oct. 26.. 

 Nov. 14.. 

 Dec. 13.. 



Height 



Average. 



1864: 



Jan. 13 



Feb. 7 



Mar. 7..-. 



Apr. 3 



May 3 



June 23... 

 July 22.... 

 Aug. 17... 

 Sept. 15... 

 Oct. 14.... 

 Nov. 13... 

 Dec. 29. -- 



Highest- 

 Average - 



1865: 

 Jan. 5, 14.. 

 Feb. 26.... 

 Mar. 30.-.. 

 Apr. 27..-. 



Mav24 



June 22 



July 8, 21.. 

 Aug. 10, 11. 

 Sept. 8—.. 



Oct. 5 



Nov. 30 



Dee. 1 



Highest.. 

 Average. 



Jan. 27 



Feb. 1 



Mar. 2 



Apr. 17--.. 

 May 14---. 



June 14 



July 12 



Aug. 9 



Sept. 26..-. 

 Highest- 

 Average - 



7.8 

 7.01 



6.5 

 6.3 

 6.9 

 6.7 

 6.9 

 7.0 

 7.0 

 6.3 

 6.5 

 6.7 

 7.2 



7.3 



6.78 



5.7 

 6.3 

 8.1 

 7.1 

 6.8 

 6.6 

 7.1 

 6.7 

 6.6 

 6.9 

 7.4 

 6.6 



8.1 

 6.82 



6.9 

 7.2 

 7.1 

 6.4 

 5.9 

 6.0 

 6.4 

 7.0 

 7.7 

 7.4 

 7.7 

 6.74 



6.7 

 6.2 

 6.3 

 6.1 

 7.3 

 7.2 

 7.0 

 6.5 

 6.3 

 7.3 

 6.62 



