tidal heights for 1984 and prior years is presented for comparison. The 

 curves show the effect of the 5-cin mean variation and the tendency for the 

 daily lows to be somewhat higher than for prior years. 

 All years combined 



88. Based on the distribution of the tide heights for 1980-1984 (Fig- 

 ure 33), the tide can be expected to exceed 110 cm for 0.28 percent of the 

 time (25 hr) . Likewise, the heights can be expected to be less than -80 cm 

 for 0.23 percent of the time (20 hr) . 



LEGEND 

 80-84 



DAILY HIGHS 



0.01 0.10 



1.00 



10.00 25.QQ 50.00 75.00 90.00 



PROBABILITY, % EQUAL OR GREATER 



99.00 99.90 99.99 



Figure 33. Distribution of hourly tide heights and daily high 

 and low water levels, 1980-1984 



Water Characteristics 



89. The results of daily measurements of surface water temperature, 

 visibility, and density are presented in this section. The summaries repre- 

 sent single observations made near 0700 EST and, therefore, may not reflect 

 daily average conditions since such characteristics can change rapidly within 

 a 24-hr period. A discussion of data collected in 1984 is followed by a com- 

 parison with previous years. 



61 



