Table 30. (Concluded.) 



B: Approximate annual input from land drainage and point source discharges of 

 dissolved 



areas. 



inorganic phosphate (PO43-) per unit area and per unit volume in the study 

 The upper entry for each estuary is area (mmol m"'^ y"l) and the lower is 



volume (mmol m-3 yl) (Nixon 1P83). 



Estuary 



Land 

 drainage 



Sewage 



Total 



Percent 

 sewage 



Narragansett Bay 



Long Island Sound 

 New York Bay 



Delaware Bay 



Chesapeake Bay 



Patuxent Estuary 



Potomac Estuary 



Paml ico Estuary 



Apalachicola Bay 



Mobile Bay 



Barataria Bay 



Northern San Francisco Bay 



South San Francisco Bay 



Kaneohe Bay 



28 

 3 



55 

 8 



18 

 2 



40 

 1 



67 

 12 



114 

 34 



14 

 5 



240 

 74 



104 

 22 



mi nor 



38 

 4 



1500 

 210 



62 

 6 



9 



1 



170 

 32 



55 

 7 



minor 



minor 



66 

 7 



1555 

 218 



80 



6q 

 2 



237 

 44 



 55 

 > 7 



114 

 34 



14 

 5 



250 

 77 



58 



96 

 78 

 13 

 72 



mi nor 



minor 



3.6 



^Data rounded to the nearest 10 units, compiled and calculated for various years 

 from different sources. 



116 



