TABLE V 
VERTICAL THERMAL GRADIENTS 
TROPICAL CLIMATE CLASS 
LEGEND: q = Surface water temperature as determined from Tables 
I through IV 
a Water temperature at designated depths 
On We) at 
n=number of observations 
LN: Tidal range less than 10 feet; fresh water influence absent. 
HN: Tidal range equal to or greater than 10 feet; fresh water influence 
absent. 
LR: Tidal range less than 10 feet; fresh water influence present, 
HR: Tidal range equal to or greater than 10 feet; fresh water influence 
present, 
WINTER (coldest month) 
LN HN LR HR 
Surface 
10 feet 0.3 0.0 
20 feet 0.4 0.2 
30 feet 0.6 0.7 
50 feet 0.8 0.5 
70 feet 1.1 0.6 
100 feet 1.4 0.1 
150 feet 1.8 0.1 
180 feet Zeal 0.6 
All values of ¢ and o. are °F, 
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