1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 



Year 



Figure 17. Monthly tide and water level statistics 

 relative to NGVD 



D 



1.50 

 1.25 

 1.00 

 0.75- 

 0.50- 

 0.25 

 0.00- 

 -0.25- 



-0.50- 



i 

 -0.75 -j 



-1.00 



-1.25 



1990 

 979-90 



-1.50- 



~\ 1 



0.01 0.10 



10.00 25.00 50.00 75.00 90.00 



Percent Greater Than 



99.00 99.90 99.99 



Figure 18. Distributions of hourly tide heights and 

 high- and low-water levels 



44 



